When a VM is stopped (such as when it's paused) guest virtual time
should stop counting. Otherwise, when the VM is resumed it will
experience time jumps and its kernel may report soft lockups. Not
counting virtual time while the VM is stopped has the side effect
of making the guest's time appear to lag when compared with real
time, and even with time derived from the physical counter. For
this reason, this change, which is enabled by default, comes with
a KVM CPU feature allowing it to be disabled, restoring legacy
behavior.
This patch only provides the implementation of the virtual time
adjustment. A subsequent patch will provide the CPU property
allowing the change to be enabled and disabled.
Reported-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Message-id: 20200120101023.16030-6-drjones@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add the missing GENERIC_TIMER feature to kvm64 cpus.
We don't currently use these registers when KVM is enabled, but it's
probably best we add the feature flag for consistency and potential
future use. There's also precedent, as we add the PMU feature flag to
KVM enabled guests, even though we don't use those registers either.
This change was originally posted as a hunk of a different, never
merged patch from Bijan Mottahedeh.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200120101023.16030-4-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Message-id: 20200120101023.16030-2-drjones@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The guest can use the semihosting API to open a handle
corresponding to QEMU's own stdin, stdout, or stderr.
When the guest closes this handle, we should not
close the underlying host stdin/stdout/stderr
the way we would do if the handle corresponded to
a host fd we'd opened on behalf of the guest in SYS_OPEN.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200124172954.28481-1-peter.maydell@linaro.org
Implement emulation of GINVT instruction. As QEMU doesn't support
caches and virtualization, this implementation covers only one
instruction (GINVT - Global Invalidate TLB) among all TLB-related
MIPS instructions.
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579883929-1517-5-git-send-email-aleksandar.markovic@rt-rk.com>
WatchHi is extended by the field MemoryMapID with the GINVT instruction.
The field is accessible by MTHC0/MFHC0 in 32-bit architectures and DMTC0/
DMFC0 in 64-bit architectures.
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579883929-1517-4-git-send-email-aleksandar.markovic@rt-rk.com>
The label 'uhi_done' is a simple 'return' call and can
be removed for a bit more clarity in the code.
CC: Aurelien Jarno <aurelien@aurel32.net>
CC: Aleksandar Markovic <amarkovic@wavecomp.com>
CC: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200106182425.20312-7-danielhb413@gmail.com>
The PA-RISC 1.1 specification says that LDCW must be aligned mod 16
or the operation is undefined. However, real hardware only generates
an unaligned access trap for unaligned mod 4.
Match real hardware, but diagnose with GUEST_ERROR a violation of
the specification.
At the same time fix a bug in the initialization of mop, where the
size was specified twice, and another to free the zero temporary.
Tested-by: Helge Deller <deller@gmx.de>
Reported-by: Helge Deller <deller@gmx.de>
Suggested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The logic was inverted and reported running if the cpu was stopped.
Let's fix that.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Fixes: d1b468bc88 ("s390x/tcg: implement SIGP SENSE RUNNING STATUS")
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200124134818.9981-1-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The separate pointer is now redundant.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200123232248.1800-6-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
I believe that the separate allocation of DisasFields from DisasContext
was meant to limit the places from which we could access fields. But
that plan did not go unchanged, and since DisasContext contains a pointer
to fields, the substructure is accessible everywhere.
By allocating the substructure with DisasContext, we improve the locality
of the accesses by avoiding one level of pointer chasing. In addition,
we avoid a dangling pointer to stack allocated memory, diagnosed by static
checkers.
Launchpad: https://bugs.launchpad.net/bugs/1661815
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200123232248.1800-5-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
All callers pass s->fields, so we might as well pass s directly.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200123232248.1800-4-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The DisasFields data is available from DisasContext.
We do not need to pass a separate argument.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200123232248.1800-3-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
We will want to include the struct in DisasContext.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200123232248.1800-2-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The AIS feature has been disabled late in the v2.10 development cycle since
there were some issues with migration (see commit 3f2d07b3b0 -
"s390x/ais: for 2.10 stable: disable ais facility"). We originally wanted
to enable it again for newer machine types, but apparently we forgot to do
this so far. Let's do it now for the machines that support proper CPU models.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1756946
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200122101437.5069-1-thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Commit ae71ed8610 replaced the use of global max_cpus variable
with a machine property, but introduced a unnecessary ifdef, as
this block is already in the 'not CONFIG_USER_ONLY' branch part:
86 #if defined(CONFIG_USER_ONLY)
87
...
106 #else /* !CONFIG_USER_ONLY */
107
...
292 static void do_ext_interrupt(CPUS390XState *env)
293 {
...
313 #ifndef CONFIG_USER_ONLY
314 MachineState *ms = MACHINE(qdev_get_machine());
315 unsigned int max_cpus = ms->smp.max_cpus;
316 #endif
To ease code review, remove the duplicated preprocessor macro,
and move the declarations at the beginning of the statement.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200121110349.25842-6-philmd@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* Cleanups (Philippe)
* virtio-scsi fix (Pan Nengyuan)
* Tweak Skylake-v3 model id (Kashyap)
* x86 UCODE_REV support and nested live migration fix (myself)
* Advisory mode for pvpanic (Zhenwei)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* Register qdev properties as class properties (Marc-André)
* Cleanups (Philippe)
* virtio-scsi fix (Pan Nengyuan)
* Tweak Skylake-v3 model id (Kashyap)
* x86 UCODE_REV support and nested live migration fix (myself)
* Advisory mode for pvpanic (Zhenwei)
# gpg: Signature made Fri 24 Jan 2020 20:16:23 GMT
# gpg: using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream: (58 commits)
build-sys: clean up flags included in the linker command line
target/i386: Add the 'model-id' for Skylake -v3 CPU models
qdev: use object_property_help()
qapi/qmp: add ObjectPropertyInfo.default-value
qom: introduce object_property_help()
qom: simplify qmp_device_list_properties()
vl: print default value in object help
qdev: register properties as class properties
qdev: move instance properties to class properties
qdev: rename DeviceClass.props
qdev: set properties with device_class_set_props()
object: return self in object_ref()
object: release all props
object: add object_class_property_add_link()
object: express const link with link property
object: add direct link flag
object: rename link "child" to "target"
object: check strong flag with &
object: do not free class properties
object: add object_property_set_default
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This fixes a confusion in the help output. (Although, if you squint
long enough at the '-cpu help' output, you _do_ notice that
"Skylake-Client-noTSX-IBRS" is an alias of "Skylake-Client-v3";
similarly for Skylake-Server-v3.)
Without this patch:
$ qemu-system-x86 -cpu help
...
x86 Skylake-Client-v1 Intel Core Processor (Skylake)
x86 Skylake-Client-v2 Intel Core Processor (Skylake, IBRS)
x86 Skylake-Client-v3 Intel Core Processor (Skylake, IBRS)
...
x86 Skylake-Server-v1 Intel Xeon Processor (Skylake)
x86 Skylake-Server-v2 Intel Xeon Processor (Skylake, IBRS)
x86 Skylake-Server-v3 Intel Xeon Processor (Skylake, IBRS)
...
With this patch:
$ ./qemu-system-x86 -cpu help
...
x86 Skylake-Client-v1 Intel Core Processor (Skylake)
x86 Skylake-Client-v2 Intel Core Processor (Skylake, IBRS)
x86 Skylake-Client-v3 Intel Core Processor (Skylake, IBRS, no TSX)
...
x86 Skylake-Server-v1 Intel Xeon Processor (Skylake)
x86 Skylake-Server-v2 Intel Xeon Processor (Skylake, IBRS)
x86 Skylake-Server-v3 Intel Xeon Processor (Skylake, IBRS, no TSX)
...
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20200123090116.14409-1-kchamart@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
All callers use error_abort, and even the function itself calls with
error_abort.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20200110153039.1379601-4-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We actually want to access the accelerator, not the machine, so
use the current_accel() wrapper instead.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200121110349.25842-10-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVMState is already accessible via CPUState::kvm_state, use it.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200121110349.25842-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM can return the host microcode revision as a feature MSR.
Use it as the default value for -cpu host.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1579544504-3616-4-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add the property and plumb it in TCG and HVF (the latter of which
tried to support returning a constant value but used the wrong MSR).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1579544504-3616-3-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Some read-only MSRs affect the behavior of ioctls such as
KVM_SET_NESTED_STATE. We can initialize them once and for all
right after the CPU is realized, since they will never be modified
by the guest.
Reported-by: Qingua Cheng <qcheng@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1579544504-3616-2-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Convert all targets to use cpu_class_set_parent_reset() with the following
coccinelle script:
@@
type CPUParentClass;
CPUParentClass *pcc;
CPUClass *cc;
identifier parent_fn;
identifier child_fn;
@@
+cpu_class_set_parent_reset(cc, child_fn, &pcc->parent_fn);
-pcc->parent_fn = cc->reset;
...
-cc->reset = child_fn;
Signed-off-by: Greg Kurz <groug@kaod.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Message-Id: <157650847817.354886.7047137349018460524.stgit@bahia.lan>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch set contains a handful of collected fixes that I'd like to target
for the 5.0 soft freeze (I know that's a long way away, I just don't know what
else to call these):
* A fix for a memory leak initializing the sifive_u board.
* Fixes to privilege mode emulation related to interrupts and fstatus.
Notably absent is the H extension implementation. That's pretty much reviewed,
but not quite ready to go yet and I didn't want to hold back these important
fixes. This boots 32-bit and 64-bit Linux (buildroot this time, just for fun)
and passes "make check".
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Merge remote-tracking branch 'remotes/palmer/tags/riscv-for-master-5.0-sf1' into staging
RISC-V Patches for the 5.0 Soft Freeze, Part 1
This patch set contains a handful of collected fixes that I'd like to target
for the 5.0 soft freeze (I know that's a long way away, I just don't know what
else to call these):
* A fix for a memory leak initializing the sifive_u board.
* Fixes to privilege mode emulation related to interrupts and fstatus.
Notably absent is the H extension implementation. That's pretty much reviewed,
but not quite ready to go yet and I didn't want to hold back these important
fixes. This boots 32-bit and 64-bit Linux (buildroot this time, just for fun)
and passes "make check".
# gpg: Signature made Tue 21 Jan 2020 22:55:28 GMT
# gpg: using RSA key 2B3C3747446843B24A943A7A2E1319F35FBB1889
# gpg: issuer "palmer@dabbelt.com"
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>" [unknown]
# gpg: aka "Palmer Dabbelt <palmer@sifive.com>" [unknown]
# gpg: aka "Palmer Dabbelt <palmerdabbelt@google.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88 6DF8 EF4C A150 2CCB AB41
# Subkey fingerprint: 2B3C 3747 4468 43B2 4A94 3A7A 2E13 19F3 5FBB 1889
* remotes/palmer/tags/riscv-for-master-5.0-sf1:
target/riscv: update mstatus.SD when FS is set dirty
target/riscv: fsd/fsw doesn't dirty FP state
target/riscv: Fix tb->flags FS status
riscv: Set xPIE to 1 after xRET
riscv/sifive_u: fix a memory leak in soc_realize()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When dumping a guest with dump-guest-memory also dump the SVE
registers if they are in use.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200120101832.18781-1-drjones@redhat.com
[PMM: fixed checkpatch nits]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In the PAC computation, sbox was applied over wrong bits.
As this is a 4-bit sbox, bit index should be incremented by 4 instead of 16.
Test vector from QARMA paper (https://eprint.iacr.org/2016/444.pdf) was
used to verify one computation of the pauth_computepac() function which
uses sbox2.
Launchpad: https://bugs.launchpad.net/bugs/1859713
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Vincent DEHORS <vincent.dehors@smile.fr>
Signed-off-by: Adrien GRASSEIN <adrien.grassein@smile.fr>
Message-id: 20200116230809.19078-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The PMU is not optional on cortex-r5 and cortex-r5f (see
the "Features" chapter of the Technical Reference Manual).
Signed-off-by: Clement Deschamps <clement.deschamps@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200114105918.2366370-1-clement.deschamps@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A regression that was introduced, with the refactor to TranslatorOps,
drops two lines that update the PC when single-stepping is being performed.
Fixes: 11ab74b01e ("target/m68k: Convert to TranslatorOps")
Reported-by: Lucien Murray-Pitts <lucienmp_antispam@yahoo.com>
Suggested-by: Lucien Murray-Pitts <lucienmp_antispam@yahoo.com>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200116165454.2076265-1-laurent@vivier.eu>
Some allwinner-a10 code cleanup
New test cases for cubieboard
target/arm/arm-semi: fix SYS_OPEN to return nonzero filehandle
i.MX: add an emulation for RNGC device
target/arm: adjust program counter for wfi exception in AArch32
arm/gicv3: update virtual irq state after IAR register read
Set IL bit correctly for syndrome information for data aborts
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20200117-1' into staging
Add model of the Netduino Plus 2 board
Some allwinner-a10 code cleanup
New test cases for cubieboard
target/arm/arm-semi: fix SYS_OPEN to return nonzero filehandle
i.MX: add an emulation for RNGC device
target/arm: adjust program counter for wfi exception in AArch32
arm/gicv3: update virtual irq state after IAR register read
Set IL bit correctly for syndrome information for data aborts
# gpg: Signature made Fri 17 Jan 2020 14:27:40 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20200117-1:
target/arm: Set ISSIs16Bit in make_issinfo
target/arm: Return correct IL bit in merge_syn_data_abort
arm/gicv3: update virtual irq state after IAR register read
target/arm: adjust program counter for wfi exception in AArch32
i.MX: add an emulation for RNGC
target/arm/arm-semi: fix SYS_OPEN to return nonzero filehandle
hw/arm/allwinner-a10: Remove local qemu_irq variables
hw/arm/allwinner-a10: Simplify by passing IRQs with qdev_pass_gpios()
hw/arm/allwinner-a10: Move SoC definitions out of header
tests/boot_linux_console: Add a SD card test for the CubieBoard
tests/boot_linux_console: Add initrd test for the CubieBoard
hw/arm: Add the Netduino Plus 2
hw/arm: Add the STM32F4xx SoC
hw/misc: Add the STM32F4xx EXTI device
hw/misc: Add the STM32F4xx Sysconfig device
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
During the conversion to decodetree, the setting of
ISSIs16Bit got lost. This causes the guest os to
incorrectly adjust trapping memory operations.
Cc: qemu-stable@nongnu.org
Fixes: 46beb58efb ("target/arm: Convert T16, load (literal)")
Reported-by: Jeff Kubascik <jeff.kubascik@dornerworks.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200117004618.2742-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The IL bit is set for 32-bit instructions, thus passing false
with the is_16bit parameter to syn_data_abort_with_iss() makes
a syn mask that always has the IL bit set.
Pass is_16bit as true to make the initial syn mask have IL=0,
so that the final IL value comes from or'ing template_syn.
Cc: qemu-stable@nongnu.org
Fixes: aaa1f954d4 ("target-arm: A64: Create Instruction Syndromes for Data Aborts")
Signed-off-by: Jeff Kubascik <jeff.kubascik@dornerworks.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200117004618.2742-2-richard.henderson@linaro.org
[rth: Extracted this as a self-contained bug fix from a larger patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The wfi instruction can be configured to be trapped by a higher exception
level, such as the EL2 hypervisor. When the instruction is trapped, the
program counter should contain the address of the wfi instruction that
caused the exception. The program counter is adjusted for this in the wfi op
helper function.
However, this correction is done to env->pc, which only applies to AArch64
mode. For AArch32, the program counter is stored in env->regs[15]. This
adds an if-else statement to modify the correct program counter location
based on the the current CPU mode.
Signed-off-by: Jeff Kubascik <jeff.kubascik@dornerworks.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
According to the specification "Semihosting for AArch32 and Aarch64",
the SYS_OPEN operation should return:
- A nonzero handle if the call is successful
- -1 if the call is not successful
So, it should never return 0.
Prior to commit 35e9a0a8ce ("target/arm/arm-semi: Make semihosting
code hand out its own file descriptors"), the guest fd matched to the
host fd. It returned a nonzero handle on success since the fd 0 is
already used for stdin.
Now that the guest fd is the index of guestfd_array, it starts from 0.
I noticed this issue particularly because Trusted Firmware-A built with
PLAT=qemu is no longer working. Its io_semihosting driver only handles
a positive return value as a valid filehandle.
Basically, there are two ways to fix this:
- Use (guestfd - 1) as the index of guestfs_arrary. We need to insert
increment/decrement to convert the guestfd and the array index back
and forth.
- Keep using guestfd as the index of guestfs_array. The first entry
of guestfs_array is left unused.
I thought the latter is simpler. We end up with wasting a small piece
of memory for the unused first entry of guestfd_array, but this is
probably not a big deal.
Fixes: 35e9a0a8ce ("target/arm/arm-semi: Make semihosting code hand out its own file descriptors")
Cc: qemu-stable@nongnu.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200109041228.10131-1-masahiroy@kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The mask used when setting FPCSR allows setting bits 10 to 1. However,
OpenRISC has flags and config bits in 11 to 1, 11 being Divide by Zero
Flag (DZF). This seems like an off-by-one bug.
This was found when testing the GLIBC test suite which has test cases to
set and clear all bits.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Message-Id: <20200110212843.27335-1-shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
remove the check becuase SD bit should summarize FS and XS fields
unconditionally.
Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
It was found that running libquantum on riscv-linux qemu produced an
incorrect result. After investigation, FP registers are not saved
during context switch due to incorrect mstatus.FS.
In current implementation tb->flags merges all non-disabled state to
dirty. This means the code in mark_fs_dirty in translate.c that
handles initial and clean states is unreachable.
This patch fixes it and is successfully tested with:
libquantum
Thanks to Richard for pointing out the actual bug.
v3: remove the redundant condition
v2: root cause FS problem
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
When executing an xRET instruction, supposing xPP holds the
value y, xIE is set to xPIE; the privilege mode is changed to y;
xPIE is set to 1. But QEMU sets xPIE to 0 incorrectly.
Signed-off-by: Yiting Wang <yiting.wang@windriver.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
We currently search both the root and the tcg/ directories for tcg
files:
$ git grep '#include "tcg/' | wc -l
28
$ git grep '#include "tcg[^/]' | wc -l
94
To simplify the preprocessor search path, unify by expliciting the
tcg/ directory.
Patch created mechanically by running:
$ for x in \
tcg.h tcg-mo.h tcg-op.h tcg-opc.h \
tcg-op-gvec.h tcg-gvec-desc.h; do \
sed -i "s,#include \"$x\",#include \"tcg/$x\"," \
$(git grep -l "#include \"$x\""); \
done
Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc parts)
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200101112303.20724-2-philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
There are only two uses. Within dcbz_common, the local variable
mmu_idx already contains the epid computation, and we can avoid
repeating it for the store. Within helper_icbiep, the usage is
trivially expanded using PPC_TLB_EPID_LOAD.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The generated functions aside from *_real are unused.
The *_real functions have a couple of users in mem_helper.c;
use *_mmuidx_ra instead, with MMU_REAL_IDX.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Use *_mmuidx_ra directly, without intermediate macros.
The separate suffixed functions were used to construct
some do_##insn function switched on mmu_idx. The interface
is exactly identical to the *_mmuidx_ra functions. Replace
them directly and remove the constructions.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The generated *_user functions are unused. The *_kernel functions
have a couple of users in op_helper.c; use *_mmuidx_ra instead,
with MMU_KERNEL_IDX.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Use *_mmuidx_ra directly, without intermediate macros.
The functions generated by these macros are unused.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The functions generated by these macros are unused.
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not use exec/cpu_ldst_{,useronly_}template.h directly,
but instead use the functional interface.
Cc: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Code movement in an upcoming patch will show that this file
was implicitly depending on tcg.h being included indirectly.
Cc: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Code movement in an upcoming patch will show that this file
was implicitly depending on tcg.h being included indirectly.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We don't actually need the result of the read, only to probe that the
memory mapping exists. This is exactly what probe_access does.
This is also the only user of any cpu_ld*_code_ra function.
Removing this allows the interface to be removed shortly.
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* Command line parsing fixes (Michal, Peter, Xiaoyao)
* Cooperlake CPU model fixes (Xiaoyao)
* i386 gdb fix (mkdolata)
* IOEventHandler cleanup (Philippe)
* icount fix (Pavel)
* RR support for random number sources (Pavel)
* Kconfig fixes (Philippe)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* Compat machines fix (Denis)
* Command line parsing fixes (Michal, Peter, Xiaoyao)
* Cooperlake CPU model fixes (Xiaoyao)
* i386 gdb fix (mkdolata)
* IOEventHandler cleanup (Philippe)
* icount fix (Pavel)
* RR support for random number sources (Pavel)
* Kconfig fixes (Philippe)
# gpg: Signature made Wed 08 Jan 2020 10:41:00 GMT
# gpg: using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream: (38 commits)
chardev: Use QEMUChrEvent enum in IOEventHandler typedef
chardev: use QEMUChrEvent instead of int
chardev/char: Explicit we ignore some QEMUChrEvent in IOEventHandler
monitor/hmp: Explicit we ignore a QEMUChrEvent in IOEventHandler
monitor/qmp: Explicit we ignore few QEMUChrEvent in IOEventHandler
virtio-console: Explicit we ignore some QEMUChrEvent in IOEventHandler
vhost-user-blk: Explicit we ignore few QEMUChrEvent in IOEventHandler
vhost-user-net: Explicit we ignore few QEMUChrEvent in IOEventHandler
vhost-user-crypto: Explicit we ignore some QEMUChrEvent in IOEventHandler
ccid-card-passthru: Explicit we ignore QEMUChrEvent in IOEventHandler
hw/usb/redirect: Explicit we ignore few QEMUChrEvent in IOEventHandler
hw/usb/dev-serial: Explicit we ignore few QEMUChrEvent in IOEventHandler
hw/char/terminal3270: Explicit ignored QEMUChrEvent in IOEventHandler
hw/ipmi: Explicit we ignore some QEMUChrEvent in IOEventHandler
hw/ipmi: Remove unnecessary declarations
target/i386: Add missed features to Cooperlake CPU model
target/i386: Add new bit definitions of MSR_IA32_ARCH_CAPABILITIES
target/i386: Fix handling of k_gs_base register in 32-bit mode in gdbstub
hw/rtc/mc146818: Add missing dependency on ISA Bus
hw/nvram/Kconfig: Restrict CHRP NVRAM to machines using OpenBIOS or SLOF
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Here's another pull request for qemu-5.0 of ppc related changes.
Highlights are:
* First parts of support for POWER Secure VMs
* Rework to clean up how we pass context information to the various
components of the pnv machine (reduces usage of qdev_get_machine())
* Assorted cleanups and bugfixes
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.0-20200108' into staging
ppc patch queue 2020-01-08
Here's another pull request for qemu-5.0 of ppc related changes.
Highlights are:
* First parts of support for POWER Secure VMs
* Rework to clean up how we pass context information to the various
components of the pnv machine (reduces usage of qdev_get_machine())
* Assorted cleanups and bugfixes
# gpg: Signature made Wed 08 Jan 2020 05:22:08 GMT
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-5.0-20200108: (26 commits)
ppc/pnv: fix check on return value of blk_getlength()
ppc/pnv: check return value of blk_pwrite()
pnv/psi: Consolidate some duplicated code in pnv_psi_realize()
pnv/psi: Add device reset hook
pnv/xive: Deduce the PnvXive pointer from XiveTCTX::xptr
spapr/xive: Deduce the SpaprXive pointer from XiveTCTX::xptr
xive: Add a "presenter" link property to the TCTX object
ppc/pnv: Add a "pnor" const link property to the BMC internal simulator
ppc/pnv: Add an "nr-threads" property to the base chip class
xive: Use the XIVE fabric link under the XIVE router
spapr, pnv, xive: Add a "xive-fabric" link to the XIVE router
pnv/xive: Use device_class_set_parent_realize()
ppc/pnv: Introduce a "xics" property under the POWER8 chip
ppc/pnv: Introduce a "xics" property alias under the PSI model
spapr/xive: remove redundant check in spapr_match_nvt()
ppc/pnv: Drop "num-chips" machine property
ppc440_bamboo.c: remove label from bamboo_load_device_tree()
spapr.c: remove 'out' label in spapr_dt_cas_updates()
ppc/spapr: Don't call KVM_SVM_OFF ioctl on TCG
spapr/xive: Use device_class_set_parent_realize()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- build fix (missing x86-iommu stubs)
- python fixes for freebsd and OSX
- nicer reporting of acceptance failures
- fix build nesting of fp-test (breaks bsds)
- semihosting clean-ups
- support for blocking semihosting console
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-and-semihosting-090120-2' into staging
Testing fixes and semiconsole support:
- build fix (missing x86-iommu stubs)
- python fixes for freebsd and OSX
- nicer reporting of acceptance failures
- fix build nesting of fp-test (breaks bsds)
- semihosting clean-ups
- support for blocking semihosting console
# gpg: Signature made Thu 09 Jan 2020 11:42:51 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-testing-and-semihosting-090120-2:
tests/tcg: add user version of dumb-as-bricks semiconsole test
tests/tcg: extract __semi_call into a header and expand
tests/tcg: add a dumb-as-bricks semihosting console test
semihosting: add qemu_semihosting_console_inc for SYS_READC
target/arm: only update pc after semihosting completes
target/arm: remove unused EXCP_SEMIHOST leg
testing: don't nest build for fp-test
travis.yml: install homebrew python for OS X
travis.yml: duplicate before_script for MacOSX
travis.yml: Detach build and test steps
travis.yml: avocado: Print logs of non-pass tests only
freebsd: use python37
tests/vm: update openbsd to release 6.6
hw/i386/x86-iommu: Add missing stubs
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Provides a blocking call to read a character from the console using
semihosting.chardev, if specified. This takes some careful command
line options to use stdio successfully as the serial ports, monitor
and semihost all want to use stdio. Here's a sample set of command
line options which share stdio between semihost, monitor and serial
ports:
qemu \
-chardev stdio,mux=on,id=stdio0 \
-serial chardev:stdio0 \
-semihosting-config enable=on,chardev=stdio0 \
-mon chardev=stdio0,mode=readline
This creates a chardev hooked to stdio and then connects all of the
subsystems to it. A shorter mechanism would be good to hear about.
Signed-off-by: Keith Packard <keithp@keithp.com>
Message-Id: <20191104204230.12249-1-keithp@keithp.com>
[AJB: fixed up deadlock, minor commit title reword]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Before we introduce blocking semihosting calls we need to ensure we
can restart the system on semi hosting exception. To be able to do
this the EXCP_SEMIHOST operation should be idempotent until it finally
completes. Practically this means ensureing we only update the pc
after the semihosting call has completed.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Keith Packard <keithp@keithp.com>
All semihosting exceptions are dealt with earlier in the common code
so we should never get here.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Keith Packard <keithp@keithp.com>
Fixes:
target/arm/translate-a64.c: In function 'disas_crypto_three_reg_sha512':
target/arm/translate-a64.c:13625:9: error: 'genfn' may be used uninitialized in this function [-Werror=maybe-uninitialized]
genfn(tcg_rd_ptr, tcg_rn_ptr, tcg_rm_ptr);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
qemu/target/arm/translate-a64.c:13609:8: error: 'feature' may be used uninitialized in this function [-Werror=maybe-uninitialized]
if (!feature) {
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200108023915.52288-1-pannengyuan@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Invoking KVM_SVM_OFF ioctl for TCG guests will lead to a QEMU crash.
Fix this by ensuring that we don't call KVM_SVM_OFF ioctl on TCG.
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Fixes: 4930c1966249 ("ppc/spapr: Support reboot of secure pseries guest")
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Message-Id: <20200102054155.13175-1-bharata@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
A pseries guest can be run as a secure guest on Ultravisor-enabled
POWER platforms. When such a secure guest is reset, we need to
release/reset a few resources both on ultravisor and hypervisor side.
This is achieved by invoking this new ioctl KVM_PPC_SVM_OFF from the
machine reset path.
As part of this ioctl, the secure guest is essentially transitioned
back to normal mode so that it can reboot like a regular guest and
become secure again.
This ioctl has no effect when invoked for a normal guest. If this ioctl
fails for a secure guest, the guest is terminated.
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Message-Id: <20191219031445.8949-3-bharata@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The exception vector offset calculation was moved into a function but
the case when AIL=0 was not checked.
The reason we got away with this is that the sole caller of
ppc_excp_vector_offset checks the AIL before calling the function:
/* Handle AIL */
if (ail) {
...
vector |= ppc_excp_vector_offset(cs, ail);
}
Fixes: 2586a4d7a0 ("target/ppc: Move exception vector offset computation into a function")
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20191217142512.574075-1-farosas@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
They were added in "16415335be Use correct input constant" with a
single use in kvm_arch_pre_run but that function's implementation was
removed by "1e8f51e856 ppc: remove idle_timer logic".
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20191218014616.686124-1-farosas@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Hi,
QDEV_PROP_PTR is marked in multiple places as "FIXME/TODO/remove
me". In most cases, it can be easily replaced with QDEV_PROP_LINK when
the pointer points to an Object.
There are a few places where such substitution isn't possible. For
those places, it seems reasonable to use a specific setter method
instead, and keep the user_creatable = false. In other places,
proper usage of qdev or other facilies is the solution.
The serial code wasn't converted to qdev, which makes it a bit more
archaic to deal with. Let's convert it first, so we can more easily
embed it from other devices, and re-export some properties and drop
QDEV_PROP_PTR usage.
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Merge remote-tracking branch 'remotes/elmarco/tags/prop-ptr-pull-request' into staging
Clean-ups: qom-ify serial and remove QDEV_PROP_PTR
Hi,
QDEV_PROP_PTR is marked in multiple places as "FIXME/TODO/remove
me". In most cases, it can be easily replaced with QDEV_PROP_LINK when
the pointer points to an Object.
There are a few places where such substitution isn't possible. For
those places, it seems reasonable to use a specific setter method
instead, and keep the user_creatable = false. In other places,
proper usage of qdev or other facilies is the solution.
The serial code wasn't converted to qdev, which makes it a bit more
archaic to deal with. Let's convert it first, so we can more easily
embed it from other devices, and re-export some properties and drop
QDEV_PROP_PTR usage.
# gpg: Signature made Tue 07 Jan 2020 15:01:26 GMT
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* remotes/elmarco/tags/prop-ptr-pull-request: (37 commits)
qdev/qom: remove some TODO limitations now that PROP_PTR is gone
qdev: remove QDEV_PROP_PTR
qdev: remove PROP_MEMORY_REGION
omap-gpio: remove PROP_PTR
omap-i2c: remove PROP_PTR
omap-intc: remove PROP_PTR
smbus-eeprom: remove PROP_PTR
cris: improve passing PIC interrupt vector to the CPU
mips/cps: fix setting saar property
qdev: use g_strcmp0() instead of open-coding it
leon3: use qdev gpio facilities for the PIL
leon3: use qemu_irq framework instead of callback as property
dp8393x: replace PROP_PTR with PROP_LINK
etraxfs: remove PROP_PTR usage
lance: replace PROP_PTR with PROP_LINK
vmmouse: replace PROP_PTR with PROP_LINK
sm501: make SerialMM a child, export chardev property
mips: use sysbus_mmio_get_region() instead of internal fields
mips: use sysbus_add_io()
mips: baudbase is 115200 by default
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It lacks VMX features and two security feature bits (disclosed recently) in
MSR_IA32_ARCH_CAPABILITIES in current Cooperlake CPU model, so add them.
Fixes: 22a866b616 ("i386: Add new CPU model Cooperlake")
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20191225063018.20038-3-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bit 6, 7 and 8 of MSR_IA32_ARCH_CAPABILITIES are recently disclosed
for some security issues. Add the definitions for them to be used by named
CPU models.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20191225063018.20038-2-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
gdb-xml/i386-32bit.xml includes the k_gs_base register too, so we have to
handle it even if TARGET_X86_64 is not defined. This is already done in
x86_cpu_gdb_read_register, but not in x86_cpu_gdb_write_register where the
incorrect return value causes all registers after it to be clobbered.
Fixes https://bugs.launchpad.net/qemu/+bug/1857640.
Signed-off-by: Marek Dolata <mkdolata@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of accessing cpu interrupt vector directly from PIC, send the
vector value over the qemu_irq.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
As Peter Maydell once said:
"Creating a gpio pin on some object that isn't yourself
looks a bit odd, but all this leon3 code is modifying
the CPU object from the outside anyway. Someday we might
tidy it up, but not today."
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
"set_pin_in" property is used to define a callback mechanism where the
device says "call the callback function, passing it an opaque cookie
and a 32-bit value". We already have a generic mechanism for doing
that, which is the qemu_irq. So we should just use that.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
This is used by netBSD (and MacOS ROM) to detect the MMU type
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20191220172415.35838-1-laurent@vivier.eu>
[lv: add a comment before m680x0_cpu_common()]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In ed9e923c3c ("x86: move SMM property to X86MachineState", 2019-12-17)
In v4.2.0-246-ged9e923c3c the SMM property was moved from PC
machine class to x86 machine class. Makes sense, but the change
was too aggressive: in target/i386/kvm.c:kvm_arch_init() it
altered check which sets SMRAM if given machine has SMM enabled.
The line that detects whether given machine object is class of
PC_MACHINE was removed from the check. This makes qemu try to
enable SMRAM for all machine types, which is not what we want.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Fixes: ed9e923c3c ("x86: move SMM property to X86MachineState", 2019-12-17)
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <7cc91bab3191bfd7e071bdd3fdf7fe2a2991deb0.1577692822.git.mprivozn@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Configuration overlay may define MPU background map. Import
core-matmap.h from the overlay and use XCHAL_MPU_BACKGROUND_MAP macro
if it's defined.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Import core-isa.h from its canonical place in the configuration overlay.
Drop --xform option from the tar command line.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Allow ps.ring modification by wsr.ps/xsr.ps and use ps.ring value in
xtensa_get_[c]ring on configurations with MPU.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
After setting CP15 bits in arm_set_cpu_on() the cached hflags must
be rebuild to reflect the changed processor state. Without rebuilding,
the cached hflags would be inconsistent until the next call to
arm_rebuild_hflags(). When QEMU is compiled with debugging enabled
(--enable-debug), this problem is captured shortly after the first
call to arm_set_cpu_on() for CPUs running in ARM 32-bit non-secure mode:
qemu-system-arm: target/arm/helper.c:11359: cpu_get_tb_cpu_state:
Assertion `flags == rebuild_hflags_internal(env)' failed.
Aborted (core dumped)
Fixes: 0c7f8c43da
Cc: qemu-stable@nongnu.org
Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead of crashing in a confuse way, give some hint to the user
about why we aborted. He might report the issue without having
to use a debugger.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191209134552.27733-1-philmd@redhat.com
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The ASPEED AST2600 clocks the generic timer at the rate of HPLL. On
recent firmwares this is at 1125MHz, which is considerably quicker than
the assumed 62.5MHz of the current generic timer implementation. The
delta between the value as read from CNTFRQ and the true rate of the
underlying QEMUTimer leads to sticky behaviour in AST2600 guests.
Add a feature-gated property exposing CNTFRQ for ARM CPUs providing the
generic timer. This allows platforms to configure CNTFRQ (and the
associated QEMUTimer) to the appropriate frequency prior to starting the
guest.
As the platform can now determine the rate of CNTFRQ we're exposed to
limitations of QEMUTimer that didn't previously materialise: In the
course of emulation we need to arbitrarily and accurately convert
between guest ticks and time, but we're constrained by QEMUTimer's use
of an integer scaling factor. The effect is QEMUTimer cannot exactly
capture the period of frequencies that do not cleanly divide
NANOSECONDS_PER_SECOND for scaling ticks to time. As such, provide an
equally inaccurate scaling factor for scaling time to ticks so at least
a self-consistent inverse relationship holds.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: a22db9325f96e39f76e3c2baddcb712149f46bf2.1576215453.git-series.andrew@aj.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Prepare for SoCs such as the ASPEED AST2600 whose firmware configures
CNTFRQ to values significantly larger than the static 62.5MHz value
currently derived from GTIMER_SCALE. As the OS potentially derives its
timer periods from the CNTFRQ value the lack of support for running
QEMUTimers at the appropriate rate leads to sticky behaviour in the
guest.
Substitute the GTIMER_SCALE constant with use of a helper to derive the
period from gt_cntfrq_hz stored in struct ARMCPU. Initially set
gt_cntfrq_hz to the frequency associated with GTIMER_SCALE so current
behaviour is maintained.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 40bd8df043f66e1ccfb3e9482999d099ac72bb2e.1576215453.git-series.andrew@aj.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The corner-case codepath was adjusting nexttick such that overflow
wouldn't occur when timer_mod() scaled the value back up. Remove a use
of GTIMER_SCALE and avoid unnecessary operations by calling
timer_mod_ns() directly.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: f8c680720e3abe55476e6d9cb604ad27fdbeb2e0.1576215453.git-series.andrew@aj.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- test tci with Travis
- enable multiarch testing in Travis
- default to out-of-tree builds
- make changing logfile safe via RCU
- remove redundant tests
- remove gtester test from docker
- convert DEBUG_MMAP to tracepoints
- remove hand rolled glob function
- trigger tcg re-configure when needed
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-tesing-and-misc-191219-1' into staging
Various testing and logging updates
- test tci with Travis
- enable multiarch testing in Travis
- default to out-of-tree builds
- make changing logfile safe via RCU
- remove redundant tests
- remove gtester test from docker
- convert DEBUG_MMAP to tracepoints
- remove hand rolled glob function
- trigger tcg re-configure when needed
# gpg: Signature made Thu 19 Dec 2019 08:24:08 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tesing-and-misc-191219-1: (25 commits)
tests/tcg: ensure we re-configure if configure.sh is updated
trace: replace hand-crafted pattern_glob with g_pattern_match_simple
linux-user: convert target_munmap debug to a tracepoint
linux-user: log page table changes under -d page
linux-user: add target_mmap_complete tracepoint
linux-user: convert target_mmap debug to tracepoint
linux-user: convert target_mprotect debug to tracepoint
travis.yml: Remove the redundant clang-with-MAIN_SOFTMMU_TARGETS entry
docker: gtester is no longer used
Added tests for close and change of logfile.
Add use of RCU for qemu_logfile.
qemu_log_lock/unlock now preserves the qemu_logfile handle.
Add a mutex to guarantee single writer to qemu_logfile handle.
Cleaned up flow of code in qemu_set_log(), to simplify and clarify.
Fix double free issue in qemu_set_log_filename().
ci: build out-of-tree
travis.yml: Enable builds on arm64, ppc64le and s390x
tests/test-util-filemonitor: Skip test on non-x86 Travis containers
tests/hd-geo-test: Skip test when images can not be created
iotests: Skip test 079 if it is not possible to create large files
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When using `query-cpu-definitions` using `-machine none`,
QEMU is resolving all CPU models to their latest versions. The
actual CPU model version being used by another machine type (e.g.
`pc-q35-4.0`) might be different.
In theory, this was OK because the correct CPU model
version is returned when using the correct `-machine` argument.
Except that in practice, this breaks libvirt expectations:
libvirt always use `-machine none` when checking if a CPU model
is runnable, because runnability is not expected to be affected
when the machine type is changed.
For example, when running on a Haswell host without TSX,
Haswell-v4 is runnable, but Haswell-v1 is not. On those hosts,
`query-cpu-definitions` says Haswell is runnable if using
`-machine none`, but Haswell is actually not runnable using any
of the `pc-*` machine types (because they resolve Haswell to
Haswell-v1). In other words, we're breaking the "runnability
guarantee" we promised to not break for a few releases (see
qemu-deprecated.texi).
To address this issue, change the default CPU model version to v1
on all machine types, so we make `query-cpu-definitions` output
when using `-machine none` match the results when using `pc-*`.
This will change in the future (the plan is to always return the
latest CPU model version if using `-machine none`), but only
after giving libvirt the opportunity to adapt.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1779078
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20191205223339.764534-1-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qemu_log_lock() now returns a handle and qemu_log_unlock() receives a
handle to unlock. This allows for changing the handle during logging
and ensures the lock() and unlock() are for the same file.
Also in target/tilegx/translate.c removed the qemu_log_lock()/unlock()
calls (and the log("\n")), since the translator can longjmp out of the
loop if it attempts to translate an instruction in an inaccessible page.
Signed-off-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191118211528.3221-5-robert.foley@linaro.org>
We need to actually fetch the cpu mask and set it. As we invert the
short psw indication in the mask, SIE will report a specification
exception, if it wasn't present in the reset psw.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191129142025.21453-2-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
These are trivially done by performing a memory operation
with the correct mmu_idx. The only tricky part is using
get_address directly in order to get the address wrapped;
we cannot use la2 because of the format.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191211203614.15611-3-richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Split the PER handling for store-to-real-address into its
own helper function, conditionally called when PER is
enabled, just as we do for per_branch and per_ifetch.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191211203614.15611-2-richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This file hasn't seen a real (non-trivial) update since 2008 anymore,
so we can assume that it is pretty much out of date and nobody cares
for it anymore. Let's simply remove it.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Artyom Tarasenko <atar4qemu@gmail.com>
Message-Id: <20190930171044.25312-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Mostly, Error ** is for returning error from the function, so the
callee sets it. However kvmppc_hint_smt_possible gets already filled
errp parameter. It doesn't change the pointer itself, only change the
internal state of referenced Error object. So we can make it Error
*const * errp, to stress the behavior. It will also help coccinelle
script (in future) to distinguish such cases from common errp usage.
While there, rename the function to
kvmppc_error_append_smt_possible_hint().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20191205174635.18758-8-vsementsov@virtuozzo.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message replaced]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This reverts commit cdcca22aab.
Commit cdcca22aab is a superseded version of the next commit that
crept in by accident. Revert it, so the final version applies.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <086c197db928384b8697edfa64755e2cb46c8100.1575685843.git.dirty@apple.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Legacy PCI device assignment has been already removed in commit ab37bfc7d6
("pci-assign: Remove"), but some codes remain unused.
CC: qemu-trivial@nongnu.org
Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Message-Id: <20191209072932.313056-1-devel@etsukata.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This refactors the load library of WHV libraries to make it more
modular. It makes a helper routine that can be called on demand.
This allows future expansion of load library/functions to support
functionality that is dependent on some feature being available.
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Message-Id: <MW2PR2101MB1116578040BE1F0C1B662318C0760@MW2PR2101MB1116.namprd21.prod.outlook.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These are needed by microvm too, so move them outside of PC-specific files.
With this patch, microvm.c need not include pc.h anymore.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add it to microvm as well, it is a generic property of the x86
architecture.
Suggested-by: Sergio Lopez <slp@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Remove the need to include i386/pc.h to get to the i8259 functions.
This is enough to remove the inclusion of hw/i386/pc.h from all non-x86
files.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The KVMState struct is opaque, so provide accessors for the fields
that will be moved from current_machine to the accelerator. For now
they just forward to the machine object, but this will change.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Similar to CPU and machine classes, "-accel" class names are mangled,
so we have to first get a class via accel_find and then instantiate it.
Provide a new function to instantiate a class without going through
object_class_get_name, and use it for CPUs and machines already.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is the first pull request for the qemu-5.0 branch. It has a lot
of accumulated changes, including:
* SLOF update to support boot using the IOMMU (will become
necessary for secure guests)
* Clean ups to pnv handling of chip models
* A number of extensions to the powernv machine model
* TCG extensions to allow powernv emulated systems to run KVM guests
* Outline support for POWER10 chips in powernv
* Cleanups to the ibm,client-architecture-support feature negotiation path
* XIVE reworks to better handle the powernv machine
* Improvements to not waste interrupt queues and other semi-scarce
resources when using XIVE under KVM
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.0-20191217' into staging
ppc patch queue 2019-12-17
This is the first pull request for the qemu-5.0 branch. It has a lot
of accumulated changes, including:
* SLOF update to support boot using the IOMMU (will become
necessary for secure guests)
* Clean ups to pnv handling of chip models
* A number of extensions to the powernv machine model
* TCG extensions to allow powernv emulated systems to run KVM guests
* Outline support for POWER10 chips in powernv
* Cleanups to the ibm,client-architecture-support feature negotiation path
* XIVE reworks to better handle the powernv machine
* Improvements to not waste interrupt queues and other semi-scarce
resources when using XIVE under KVM
# gpg: Signature made Tue 17 Dec 2019 04:42:20 GMT
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-5.0-20191217: (88 commits)
pseries: Update SLOF firmware image
ppc/pnv: Drop PnvChipClass::type
ppc/pnv: Introduce PnvChipClass::xscom_pcba() method
ppc/pnv: Drop pnv_chip_is_power9() and pnv_chip_is_power10() helpers
ppc/pnv: Pass content of the "compatible" property to pnv_dt_xscom()
ppc/pnv: Pass XSCOM base address and address size to pnv_dt_xscom()
ppc/pnv: Introduce PnvChipClass::xscom_core_base() method
ppc/pnv: Introduce PnvChipClass::intc_print_info() method
ppc/pnv: Drop pnv_is_power9() and pnv_is_power10() helpers
ppc/pnv: Introduce PnvMachineClass::dt_power_mgt()
ppc/pnv: Introduce PnvMachineClass and PnvMachineClass::compat
ppc/pnv: Drop PnvPsiClass::chip_type
ppc/pnv: Introduce PnvPsiClass::compat
ppc: Drop useless extern annotation for functions
ppc/pnv: Fix OCC common area region mapping
ppc/pnv: Introduce PBA registers
ppc/pnv: Make PnvXScomInterface an incomplete type
ppc/pnv: populate the DT with realized XSCOM devices
ppc/pnv: Loop on the whole hierarchy to populate the DT with the XSCOM nodes
target/ppc: Add SPR TBU40
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Feature:
* Cooperlake CPU model
Cleanups:
* Use g_autofree in a few places
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jKk2kP+GNsjfPWKuDpQy3hnuXV/74Y+sxh122y01/atU7aai2wlOyx/OKA3ZGVxf
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging
x86 queue, 2019-12-16
Feature:
* Cooperlake CPU model
Cleanups:
* Use g_autofree in a few places
# gpg: Signature made Mon 16 Dec 2019 19:36:51 GMT
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-next-pull-request:
i386: Use g_autofree in a few places
i386: Add new CPU model Cooperlake
i386: Add macro for stibp
i386: Add MSR feature bit for MDS-NO
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The spr TBU40 is used to set the upper 40 bits of the timebase
register, present on POWER5+ and later processors.
This register can only be written by the hypervisor, and cannot be read.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191128134700.16091-5-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The Access Segment Descriptor Register (ASDR) provides information about
the storage element when taking a hypervisor storage interrupt. When
performing nested radix address translation, this is normally the guest
real address. This register is present on POWER9 processors and later.
Implement the ADSR, note read and write access is limited to the
hypervisor.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191128134700.16091-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The Processor Utilisation of Resources Register (PURR) and Scaled
Processor Utilisation of Resources Register (SPURR) provide an estimate
of the resources used by the thread, present on POWER7 and later
processors.
Currently the [S]PURR registers simply count at the rate of the
timebase.
Preserve this behaviour but rework the implementation to store an offset
like the timebase rather than doing the calculation manually. Also allow
hypervisor write access to the register along with the currently
available read access.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[ clg: rebased on current ppc tree ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191128134700.16091-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The virtual timebase register (VTB) is a 64-bit register which
increments at the same rate as the timebase register, present on POWER8
and later processors.
The register is able to be read/written by the hypervisor and read by
the supervisor. All other accesses are illegal.
Currently the VTB is just an alias for the timebase (TB) register.
Implement the VTB so that is can be read/written independent of the TB.
Make use of the existing method for accessing timebase facilities where
by the compensation is stored and used to compute the value on reads/is
updated on writes.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
[ clg: rebased on current ppc tree ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191128134700.16091-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This includes in QEMU a new CPU model for the POWER10 processor with
the same capabilities of a POWER9 process. The model will be extended
when support is completed.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191205184454.10722-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
PPCVirtualHypervisor is an interface instance. It should never be
dereferenced. Drop the dummy type definition for extra safety, which
is the common practice with QOM interfaces.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157589808041.21182.18121655959115011353.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This only makes sense with an emulated CPU. Don't set the bit in
CPUState::interrupt_request when using KVM to avoid confusions.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157548863423.3650476.16424649423510075159.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The power7_set_irq() and power9_set_irq() functions set this but it is
never used actually. Modern Book3s compatible CPUs are only supported
by the pnv and spapr machines. They have an interrupt controller, XICS
for POWER7/8 and XIVE for POWER9, whose models don't require to track
IRQ input states at the CPU level.
Drop these lines to avoid confusion.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157548862861.3650476.16622818876928044450.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When a CPU is reset, QEMU makes sure no interrupt is pending by clearing
CPUPPCstate::pending_interrupts in ppc_cpu_reset(). In the case of a
complete machine emulation, eg. a sPAPR machine, an external interrupt
request could still be pending in KVM though, eg. an IPI. It will be
eventually presented to the guest, which is supposed to acknowledge it at
the interrupt controller. If the interrupt controller is emulated in QEMU,
either XICS or XIVE, ppc_set_irq() won't deassert the external interrupt
pin in KVM since it isn't pending anymore for QEMU. When the vCPU re-enters
the guest, the interrupt request is still pending and the vCPU will try
again to acknowledge it. This causes an infinite loop and eventually hangs
the guest.
The code has been broken since the beginning. The issue wasn't hit before
because accel=kvm,kernel-irqchip=off is an awkward setup that never got
used until recently with the LC92x IBM systems (aka, Boston).
Add a ppc_irq_reset() function to do the necessary cleanup, ie. deassert
the IRQ pins of the CPU in QEMU and most importantly the external interrupt
pin for this vCPU in KVM.
Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157548861740.3650476.16879693165328764758.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Make kvmppc_hint_smt_possible hint append helper well formed:
rename errp to errp_in, as it is IN-parameter here (which is unusual
for errp), rename function to be kvmppc_error_append_*_hint.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20191127191434.20945-1-vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Add support for Cortex-M7 CPU
* exynos4210_gic: Suppress gcc9 format-truncation warnings
* aspeed: Various minor bug fixes and improvements
* aspeed: Add support for the tacoma-bmc board
* Honour HCR_EL32.TID1 and .TID2 trapping requirements
* Handle trapping to EL2 of AArch32 VMRS instructions
* Handle AArch32 CP15 trapping via HSTR_EL2
* Add support for missing Jazelle system registers
* arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on
* Add support for DC CVAP & DC CVADP instructions
* Fix assertion when SCR.NS is changed in Secure-SVC &c
* enable SHPC native hot plug in arm ACPI
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20191216-1' into staging
target-arm queue:
* Add support for Cortex-M7 CPU
* exynos4210_gic: Suppress gcc9 format-truncation warnings
* aspeed: Various minor bug fixes and improvements
* aspeed: Add support for the tacoma-bmc board
* Honour HCR_EL32.TID1 and .TID2 trapping requirements
* Handle trapping to EL2 of AArch32 VMRS instructions
* Handle AArch32 CP15 trapping via HSTR_EL2
* Add support for missing Jazelle system registers
* arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on
* Add support for DC CVAP & DC CVADP instructions
* Fix assertion when SCR.NS is changed in Secure-SVC &c
* enable SHPC native hot plug in arm ACPI
# gpg: Signature made Mon 16 Dec 2019 11:08:07 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20191216-1: (34 commits)
target/arm: ensure we use current exception state after SCR update
hw/arm/virt: Simplify by moving the gic in the machine state
hw/arm/acpi: enable SHPC native hot plug
hw/arm/acpi: simplify AML bit and/or statement
hw/arm/sbsa-ref: Simplify by moving the gic in the machine state
target/arm: Add support for DC CVAP & DC CVADP ins
migration: ram: Switch to ram block writeback
Memory: Enable writeback for given memory region
tcg: cputlb: Add probe_read
arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on()
target/arm: Add support for missing Jazelle system registers
target/arm: Handle AArch32 CP15 trapping via HSTR_EL2
target/arm: Handle trapping to EL2 of AArch32 VMRS instructions
target/arm: Honor HCR_EL2.TID1 trapping requirements
target/arm: Honor HCR_EL2.TID2 trapping requirements
aspeed: Change the "nic" property definition
aspeed: Change the "scu" property definition
gpio: fix memory leak in aspeed_gpio_init()
aspeed: Add support for the tacoma-bmc board
aspeed: Remove AspeedBoardConfig array and use AspeedMachineClass
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A write to the SCR can change the effective EL by droppping the system
from secure to non-secure mode. However if we use a cached current_el
from before the change we'll rebuild the flags incorrectly. To fix
this we introduce the ARM_CP_NEWEL CP flag to indicate the new EL
should be used when recomputing the flags.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191212114734.6962-1-alex.bennee@linaro.org
Cc: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191209143723.6368-1-alex.bennee@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
ARMv8.2 introduced support for Data Cache Clean instructions
to PoP (point-of-persistence) - DC CVAP and PoDP (point-of-deep-persistence)
- DV CVADP. Both specify conceptual points in a memory system where all writes
that are to reach them are considered persistent.
The support provided considers both to be actually the same so there is no
distinction between the two. If none is available (there is no backing store
for given memory) both will result in Data Cache Clean up to the point of
coherency. Otherwise sync for the specified range shall be performed.
Signed-off-by: Beata Michalska <beata.michalska@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191121000843.24844-5-beata.michalska@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This change ensures that the FPU can be accessed in Non-Secure mode
when the CPU core is reset using the arm_set_cpu_on() function call.
The NSACR.{CP11,CP10} bits define the exception level required to
access the FPU in Non-Secure mode. Without these bits set, the CPU
will give an undefined exception trap on the first FPU access for the
secondary cores under Linux.
This is necessary because in this power-control codepath QEMU
is effectively emulating a bit of EL3 firmware, and has to set
the CPU up as the EL3 firmware would.
Fixes: fc1120a7f5
Cc: qemu-stable@nongnu.org
Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
[PMM: added clarifying para to commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QEMU lacks the minimum Jazelle implementation that is required
by the architecture (everything is RAZ or RAZ/WI). Add it
together with the HCR_EL2.TID0 trapping that goes with it.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-6-maz@kernel.org
[PMM: moved ARMCPRegInfo array to file scope, marked it
'static global', moved new condition down in
register_cp_regs_for_features() to go with other feature
things rather than up with the v6/v7/v8 stuff]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
HSTR_EL2 offers a way to trap ranges of CP15 system register
accesses to EL2, and it looks like this register is completely
ignored by QEMU.
To avoid adding extra .accessfn filters all over the place (which
would have a direct performance impact), let's add a new TB flag
that gets set whenever HSTR_EL2 is non-zero and that QEMU translates
a context where this trap has a chance to apply, and only generate
the extra access check if the hypervisor is actively using this feature.
Tested with a hand-crafted KVM guest accessing CBAR.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-5-maz@kernel.org
[PMM: use is_a64(); fix comment syntax]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
HCR_EL2.TID3 requires that AArch32 reads of MVFR[012] are trapped to
EL2, and HCR_EL2.TID0 does the same for reads of FPSID.
In order to handle this, introduce a new TCG helper function that
checks for these control bits before executing the VMRC instruction.
Tested with a hacked-up version of KVM/arm64 that sets the control
bits for 32bit guests.
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-4-maz@kernel.org
[PMM: move helper declaration to helper.h; make it
TCG_CALL_NO_WG]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
HCR_EL2.TID1 mandates that access from EL1 to REVIDR_EL1, AIDR_EL1
(and their 32bit equivalents) as well as TCMTR, TLBTR are trapped
to EL2. QEMU ignores it, making it harder for a hypervisor to
virtualize the HW (though to be fair, no known hypervisor actually
cares).
Do the right thing by trapping to EL2 if HCR_EL2.TID1 is set.
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-3-maz@kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
HCR_EL2.TID2 mandates that access from EL1 to CTR_EL0, CCSIDR_EL1,
CCSIDR2_EL1, CLIDR_EL1, CSSELR_EL1 are trapped to EL2, and QEMU
completely ignores it, making it impossible for hypervisors to
virtualize the cache hierarchy.
Do the right thing by trapping to EL2 if HCR_EL2.TID2 is set.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-2-maz@kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is derived from cortex-m4 description, adding DP support and FPv5
instructions with the corresponding flags in isar and mvfr2.
Checked that it could successfully execute
vrinta.f32 s15, s15
while cortex-m4 emulation rejects it with "illegal instruction".
Signed-off-by: Christophe Lyon <christophe.lyon@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20191025090841.10299-1-christophe.lyon@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We neglected to clean up pending interrupts and emergency signals;
fix that.
Message-Id: <20191206135404.16051-1-cohuck@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
qmp_query_cpu_definitions() passes @errp to get_max_cpu_model(), then
frees any error it gets back. This effectively ignores errors.
Dereferencing @errp is wrong; see the big comment in error.h. Passing
@errp is also wrong, because it works only as long as @errp is neither
@error_fatal nor @error_abort. Introduced in commit 38cba1f4d8
"s390x: return unavailable features via query-cpu-definitions".
No caller actually passes such @errp values.
Fix anyway: simply pass NULL to get_max_cpu_model().
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191204093625.14836-16-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
cpu_model_from_info() is a helper for qmp_query_cpu_model_expansion(),
qmp_query_cpu_model_comparison(), qmp_query_cpu_model_baseline(). It
dereferences @errp when the visitor or the QOM setter fails. That's
wrong; see the big comment in error.h. Introduced in commit
137974cea3 's390x/cpumodel: implement QMP interface
"query-cpu-model-expansion"'.
Its three callers have the same issue. Introduced in commit
4e82ef0502 's390x/cpumodel: implement QMP interface
"query-cpu-model-comparison"' and commit f1a47d08ef 's390x/cpumodel:
implement QMP interface "query-cpu-model-baseline"'.
No caller actually passes null.
Fix anyway: splice in a local Error *err, and error_propagate().
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191204093625.14836-15-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
get_max_cpu_model() dereferences @errp when
kvm_s390_get_host_cpu_model() fails, apply_cpu_model() dereferences it
when kvm_s390_apply_cpu_model() fails, and s390_realize_cpu_model()
dereferences it when get_max_cpu_model() or check_compatibility()
fail. That's wrong; see the big comment in error.h. All three
introduced in commit 80560137cf "s390x/cpumodel: check and apply the
CPU model".
No caller actually passes null.
Fix anyway: splice in a local Error *err, and error_propagate().
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191204093625.14836-14-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
s390x-cpu property setters set_feature() and set_feature_group()
dereference @errp when the visitor fails. That's wrong; see the big
comment in error.h. Introduced in commit 0754f60429 "s390x/cpumodel:
expose features and feature groups as properties".
No caller actually passes null.
Fix anyway: splice in a local Error *err, and error_propagate().
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191204093625.14836-13-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
As it turns out we need to clear the ri controls and PSW enablement
bit to be architecture compliant.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20191203132813.2734-4-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
It defaults to returning 0 anyway and that return value is not
necessary, as 0 is also the default rc that the caller would return.
While doing that we can simplify the logic a bit and return early if
we inject a PGM exception.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20191129091713.4582-1-frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Let's improve readability by:
* Using constants for the subcodes
* Moving parameter checking into a function
* Removing subcode > 6 check as the default case catches that
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191127175046.4911-6-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Let's also move the clear reset function into the reset handler.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20191127175046.4911-5-frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Let's move the intial reset into the reset handler and cleanup
afterwards.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191128083723.11937-1-frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Let's start moving the cpu reset functions into a single function with
a switch/case, so we can later use fallthroughs and share more code
between resets.
This patch introduces the reset function by renaming cpu_reset().
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191127175046.4911-3-frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Cooper Lake is intel's successor to Cascade Lake, the new
CPU model inherits features from Cascadelake-Server, while
add one platform associated new feature: AVX512_BF16. Meanwhile,
add STIBP for speculative execution.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-4-git-send-email-cathy.zhang@intel.com>
Reviewed-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
stibp feature is already added through the following commit.
0e89165829
Add a macro for it to allow CPU models to report it when host supports.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-3-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Define MSR_ARCH_CAP_MDS_NO in the IA32_ARCH_CAPABILITIES MSR to allow
CPU models to report the feature when host supports it.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-2-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
If kvm does not support VMX feature by nested=0, the kvm_vmx_basic
can't get the right value from MSR_IA32_VMX_BASIC register, which
make qemu coredump when qemu do KVM_SET_MSRS.
The coredump info:
error: failed to set MSR 0x480 to 0x0
kvm_put_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20191206071111.12128-1-yang.zhong@intel.com>
Reported-by: Catherine Ho <catherine.hecx@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Previous implementation in hvf_inject_interrupts() would always inject
VMCS_INTR_T_SWINTR even when VMCS_INTR_T_HWINTR was required. Now
correctly determine when VMCS_INTR_T_HWINTR is appropriate versus
VMCS_INTR_T_SWINTR.
Make sure to clear ins_len and has_error_code when ins_len isn't
valid and error_code isn't set.
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <bf8d945ea1b423786d7802bbcf769517d1fd01f8.1575330463.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
HCR_EL2.TID3 mandates that access from EL1 to a long list of id
registers traps to EL2, and QEMU has so far ignored this requirement.
This breaks (among other things) KVM guests that have PtrAuth enabled,
while the hypervisor doesn't want to expose the feature to its guest.
To achieve this, KVM traps the ID registers (ID_AA64ISAR1_EL1 in this
case), and masks out the unsupported feature.
QEMU not honoring the trap request means that the guest observes
that the feature is present in the HW, starts using it, and dies
a horrible death when KVM injects an UNDEF, because the feature
*really* isn't supported.
Do the right thing by trapping to EL2 if HCR_EL2.TID3 is set.
Note that this change does not include trapping of the MVFR
registers from AArch32 (they are accessed via the VMRS
instruction and need to be handled in a different way).
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
Message-id: 20191123115618.29230-1-maz@kernel.org
[PMM: added missing accessfn line for ID_AA4PFR2_EL1_RESERVED;
changed names of access functions to include _tid3]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The ARMv8 ARM states when executing at EL2, EL3 or Secure EL1,
ISR_EL1 shows the pending status of the physical IRQ, FIQ, or
SError interrupts.
Unfortunately, QEMU's implementation only considers the HCR_EL2
bits, and ignores the current exception level. This means a hypervisor
trying to look at its own interrupt state actually sees the guest
state, which is unexpected and breaks KVM as of Linux 5.3.
Instead, check for the running EL and return the physical bits
if not running in a virtualized context.
Fixes: 636540e9c4
Cc: qemu-stable@nongnu.org
Reported-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Message-id: 20191122135833.28953-1-maz@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
According to the PushStack() pseudocode in the armv7m RM,
bit 4 of the LR should be set to NOT(CONTROL.PFCA) when
an FPU is present. Current implementation is doing it for
armv8, but not for armv7. This patch makes the existing
logic applicable to both code paths.
Signed-off-by: Jean-Hugues Deschenes <jean-hugues.deschenes@ossiaco.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
More accurately match SDM when setting CR0 and PDPTE registers.
Clear PDPTE registers when resetting vcpus.
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <464adb39c8699fb8331d8ad6016fc3e2eff53dbc.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In real x86 processors, the REX prefix must come after legacy prefixes.
REX before legacy is ignored. Update the HVF emulation code to properly
handle this. Fix some spelling errors in constants. Fix some decoder
table initialization issues found by Coverity.
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <eff30ded8307471936bec5d84c3b6efbc95e3211.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The existing code in QEMU's HVF support to attempt to synchronize TSC
across multiple cores is not sufficient. TSC value on other cores
can go backwards. Until implementation is fixed, remove calls to
hv_vm_sync_tsc(). Pass through TSC to guest OS.
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <44c4afd2301b8bf99682b229b0796d84edd6d66f.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If an area is non-RAM and non-ROMD, then remove mappings so accesses
will trap and can be emulated. Change hvf_find_overlap_slot() to take
a size instead of an end address: it wouldn't return a slot because
callers would pass the same address for start and end. Don't always
map area as read/write/execute, respect area flags.
Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <1d8476c8f86959273fbdf23c86f8b4b611f5e2e1.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
They are present in client (Core) Skylake but pasted wrong into the server
SKUs.
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We have been trying to avoid adding new aliases for CPU model
versions, but in the case of changes in defaults introduced by
the TAA mitigation patches, the aliases might help avoid user
confusion when applying host software updates.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The MSR_IA32_TSX_CTRL MSR can be used to hide TSX (also known as the
Trusty Side-channel Extension). By virtualizing the MSR, KVM guests
can disable TSX and avoid paying the price of mitigating TSX-based
attacks on microarchitectural side channels.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Simply moving the non-stub helper_v7m_mrs/msr outside of
!CONFIG_USER_ONLY is not an option, because of all of the
other system-mode helpers that are called.
But we can split out a few subroutines to handle the few
EL0 accessible registers without duplicating code.
Reported-by: Christophe Lyon <christophe.lyon@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191118194916.3670-1-richard.henderson@linaro.org
[PMM: deleted now-redundant comment; added a default case
to switch in v7m_msr helper]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Armv8-A removes UNPREDICTABLE for R13 for these cases.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191117090621.32425-3-richard.henderson@linaro.org
[PMM: changed ENABLE_ARCH_8 checks to check a new bool 'v8a',
since these cases are still UNPREDICTABLE for v8M]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There was too much cut and paste between ldrexd and strexd,
as ldrexd does prohibit two output registers the same.
Fixes: af28822899
Reported-by: Michael Goffioul <michael.goffioul@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191117090621.32425-2-richard.henderson@linaro.org
Reviewed-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Coverity reports, in sve_zcr_get_valid_len,
"Subtract operation overflows on operands
arm_cpu_vq_map_next_smaller(cpu, start_vq + 1U) and 1U"
First, the aarch32 stub version of arm_cpu_vq_map_next_smaller,
returning 0, does exactly what Coverity reports. Remove it.
Second, the aarch64 version of arm_cpu_vq_map_next_smaller has
a set of asserts, but they don't cover the case in question.
Further, there is a fair amount of extra arithmetic needed to
convert from the 0-based zcr register, to the 1-base vq form,
to the 0-based bitmap, and back again. This can be simplified
by leaving the value in the 0-based form.
Finally, use test_bit to simplify the common case, where the
length in the zcr registers is in fact a supported length.
Reported-by: Coverity (CID 1407217)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 20191118091414.19440-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Attempting to migrate a VM using the microvm machine class results in the source
QEMU aborting with the following message/backtrace:
target/i386/machine.c:955:tsc_khz_needed: Object 0x555556608fa0 is not an
instance of type generic-pc-machine
abort()
object_class_dynamic_cast_assert()
vmstate_save_state_v()
vmstate_save_state()
vmstate_save()
qemu_savevm_state_complete_precopy()
migration_thread()
migration_thread()
migration_thread()
qemu_thread_start()
start_thread()
clone()
The access to the machine class returned by MACHINE_GET_CLASS() in
tsc_khz_needed() is crashing as it is trying to dereference a different
type of machine class object (TYPE_PC_MACHINE) to that of this microVM.
This can be resolved by extending the changes in the following commit
f0bb276bf8 ("hw/i386: split PCMachineState deriving X86MachineState from it")
and moving the save_tsc_khz field in PCMachineClass to X86MachineClass.
Fixes: f0bb276bf8 ("hw/i386: split PCMachineState deriving X86MachineState from it")
Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <1574075605-25215-1-git-send-email-liam.merwick@oracle.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TSX Async Abort (TAA) is a side channel attack on internal buffers in
some Intel processors similar to Microachitectural Data Sampling (MDS).
Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the
IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to
TAA. Make this bit available to guests.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We have to set the default model of all machine classes, not just for
the active one. Otherwise, "query-machines" will indicate the wrong
CPU model (e.g. "power9_v2.0-powerpc64-cpu" instead of
"host-powerpc64-cpu") as "default-cpu-type".
s390x already fixed this in de60a92e "s390x/kvm: Set default cpu model for
all machine classes". This patch applies a similar fix for the pseries-*
machine types on ppc64.
Doing a
{"execute":"query-machines"}
under KVM now results in
{
"hotpluggable-cpus": true,
"name": "pseries-4.2",
"numa-mem-supported": true,
"default-cpu-type": "host-powerpc64-cpu",
"is-default": true,
"cpu-max": 1024,
"deprecated": false,
"alias": "pseries"
},
{
"hotpluggable-cpus": true,
"name": "pseries-4.1",
"numa-mem-supported": true,
"default-cpu-type": "host-powerpc64-cpu",
"cpu-max": 1024,
"deprecated": false
},
...
Libvirt probes all machines via "-machine none,accel=kvm:tcg" and will
currently see the wrong CPU model under KVM.
Reported-by: Jiři Denemark <jdenemar@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Instead of relying on atomics to access the MIP register let's update
our helper function to instead just lock the IO mutex thread before
writing. This follows the same concept as used in PPC for handling
interrupts
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Palmer Dabbelt <palmer@dabbelt.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Plug temp leak around eval_cond_jmp().
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Plug temp leaks with delay slot setup.
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Simplify endian reversion of address also plugging TCG temp
leaks for loads/stores.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
rt==15 is a special case when reading the flags: it means the
destination is APSR. This patch avoids rejecting
vmrs apsr_nzcv, fpscr
as illegal instruction.
Cc: qemu-stable@nongnu.org
Signed-off-by: Christophe Lyon <christophe.lyon@linaro.org>
Message-id: 20191025095711.10853-1-christophe.lyon@linaro.org
[PMM: updated the comment]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Allow cpu 'host' to enable SVE when it's available, unless the
user chooses to disable it with the added 'sve=off' cpu property.
Also give the user the ability to select vector lengths with the
sve<N> properties. We don't adopt 'max' cpu's other sve property,
sve-max-vq, because that property is difficult to use with KVM.
That property assumes all vector lengths in the range from 1 up
to and including the specified maximum length are supported, but
there may be optional lengths not supported by the host in that
range. With KVM one must be more specific when enabling vector
lengths.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Message-id: 20191031142734.8590-10-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Extend the SVE vq map initialization and validation with KVM's
supported vector lengths when KVM is enabled. In order to determine
and select supported lengths we add two new KVM functions for getting
and setting the KVM_REG_ARM64_SVE_VLS pseudo-register.
This patch has been co-authored with Richard Henderson, who reworked
the target/arm/cpu64.c changes in order to push all the validation and
auto-enabling/disabling steps into the finalizer, resulting in a nice
LOC reduction.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Message-id: 20191031142734.8590-9-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
kvm_arm_create_scratch_host_vcpu() takes a struct kvm_vcpu_init
parameter. Rather than just using it as an output parameter to
pass back the preferred target, use it also as an input parameter,
allowing a caller to pass a selected target if they wish and to
also pass cpu features. If the caller doesn't want to select a
target they can pass -1 for the target which indicates they want
to use the preferred target and have it passed back like before.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-8-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Enable SVE in the KVM guest when the 'max' cpu type is configured
and KVM supports it. KVM SVE requires use of the new finalize
vcpu ioctl, so we add that now too. For starters SVE can only be
turned on or off, getting all vector lengths the host CPU supports
when on. We'll add the other SVE CPU properties in later patches.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-7-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
These are the SVE equivalents to kvm_arch_get/put_fpsimd. Note, the
swabbing is different than it is for fpsmid because the vector format
is a little-endian stream of words.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Message-id: 20191031142734.8590-6-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Introduce cpu properties to give fine control over SVE vector lengths.
We introduce a property for each valid length up to the current
maximum supported, which is 2048-bits. The properties are named, e.g.
sve128, sve256, sve384, sve512, ..., where the number is the number of
bits. See the updates to docs/arm-cpu-features.rst for a description
of the semantics and for example uses.
Note, as sve-max-vq is still present and we'd like to be able to
support qmp_query_cpu_model_expansion with guests launched with e.g.
-cpu max,sve-max-vq=8 on their command lines, then we do allow
sve-max-vq and sve<N> properties to be provided at the same time, but
this is not recommended, and is why sve-max-vq is not mentioned in the
document. If sve-max-vq is provided then it enables all lengths smaller
than and including the max and disables all lengths larger. It also has
the side-effect that no larger lengths may be enabled and that the max
itself cannot be disabled. Smaller non-power-of-two lengths may,
however, be disabled, e.g. -cpu max,sve-max-vq=4,sve384=off provides a
guest the vector lengths 128, 256, and 512 bits.
This patch has been co-authored with Richard Henderson, who reworked
the target/arm/cpu64.c changes in order to push all the validation and
auto-enabling/disabling steps into the finalizer, resulting in a nice
LOC reduction.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-5-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since 97a28b0eea ("target/arm: Allow VFP and Neon to be disabled via
a CPU property") we can disable the 'max' cpu model's VFP and neon
features, but there's no way to disable SVE. Add the 'sve=on|off'
property to give it that flexibility. We also rename
cpu_max_get/set_sve_vq to cpu_max_get/set_sve_max_vq in order for them
to follow the typical *_get/set_<property-name> pattern.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-4-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the query-cpu-model-expansion QMP command to Arm. We
do this selectively, only exposing CPU properties which represent
optional CPU features which the user may want to enable/disable.
Additionally we restrict the list of queryable cpu models to 'max',
'host', or the current type when KVM is in use. And, finally, we only
implement expansion type 'full', as Arm does not yet have a "base"
CPU type. More details and example queries are described in a new
document (docs/arm-cpu-features.rst).
Note, certainly more features may be added to the list of advertised
features, e.g. 'vfp' and 'neon'. The only requirement is that we can
detect invalid configurations and emit failures at QMP query time.
For 'vfp' and 'neon' this will require some refactoring to share a
validation function between the QMP query and the CPU realize
functions.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-2-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging
TCG Plugins initial implementation
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
travis.yml: enable linux-gcc-debug-tcg cache
MAINTAINERS: add me for the TCG plugins code
scripts/checkpatch.pl: don't complain about (foo, /* empty */)
.travis.yml: add --enable-plugins tests
include/exec: wrap cpu_ldst.h in CONFIG_TCG
accel/stubs: reduce headers from tcg-stub
tests/plugin: add hotpages to analyse memory access patterns
tests/plugin: add instruction execution breakdown
tests/plugin: add a hotblocks plugin
tests/tcg: enable plugin testing
tests/tcg: drop test-i386-fprem from TESTS when not SLOW
tests/tcg: move "virtual" tests to EXTRA_TESTS
tests/tcg: set QEMU_OPTS for all cris runs
tests/tcg/Makefile.target: fix path to config-host.mak
tests/plugin: add sample plugins
linux-user: support -plugin option
vl: support -plugin option
plugin: add qemu_plugin_outs helper
plugin: add qemu_plugin_insn_disas helper
plugin: expand the plugin_init function to include an info block
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
riscv_cpu_tlb_fill() uses the `size` parameter to check PMP violation
using pmp_hart_has_privs().
However, if the size is unknown (=0), the ending address will be
`addr - 1` as it is `addr + size - 1` in `pmp_hart_has_privs()`.
This always causes a false PMP violation on the starting address of the
range, as `addr - 1` is not in the range.
In order to fix, we just assume that all bytes from addr to the end of
the page will be accessed if the size is unknown.
Signed-off-by: Dayeol Lee <dayeol@berkeley.edu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
There is a small wrinkle with the gUSA instruction. The translator
effectively treats a (known) gUSA sequence as a single instruction.
For the purposes of the plugin we end up with a long multi-instruction
qemu_plugin_insn.
If the known sequence isn't detected we shall never run this
translation anyway.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Now the arm_ld*_code functions are only used at translate time we can
just pass down to translator_ld functions.
Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: convert from plugin_insn_append to translator_ld]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We document this in docs/devel/load-stores.rst so lets follow it. The
32 bit and 64 bit access functions have historically not included the
sign so we leave those as is. We also introduce some signed helpers
which are used for loading immediate values in the translator.
Fixes: 282dffc8
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191021150910.23216-1-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Currently only PRV_U, PRV_S and PRV_M are supported, so this patch ensures that
the privilege mode is set to one of them. Once support for the H-extension is
added, this code will also need to properly update the virtualization status
when switching between VU/VS-modes and M-mode.
Signed-off-by: Jonathan Behrens <jonathan@fintelia.io>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This patch enables a debugger to read the current privilege level via a virtual
"priv" register. When compiled with CONFIG_USER_ONLY the register is still
visible but always reports the value zero.
Signed-off-by: Jonathan Behrens <jonathan@fintelia.io>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
If the number of registers reported to the gdbstub code does not match the
number in the associated XML file, then the register numbers used by the stub
may get out of sync with a remote GDB instance.
Signed-off-by: Jonathan Behrens <jonathan@fintelia.io>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The CPU loop tagged all the queued signals as QEMU_SI_KILL while it was
filling the `_sigfault` part of `siginfo`: this caused QEMU to copy the
wrong fields over to the userspace program.
Make sure the fault address recorded by the MMU is is stored in the CPU
environment structure.
In case of memory faults store the exception address into `siginfo`.
Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This converts our port over from cpu_do_unassigned_access to
cpu_do_transaction_failed, as cpu_do_unassigned_access has been
deprecated.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
We directly access physical memory while walking the page tables on
RISC-V, but while doing so we were using cpu_ld*() which does not report
bus errors. This patch converts the page table walker over to use
address_space_ld*(), which allows bus errors to be detected.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
If we are in debugger mode, skip the CSR privilege level checking
so that we can read/write all CSRs. Otherwise we get:
(gdb) p/x $mtvec
Could not fetch register "mtvec"; remote failure reply 'E14'
when the hart is currently in S-mode.
Reported-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
We document this in docs/devel/load-stores.rst so lets follow it. The
32 bit and 64 bit access functions have historically not included the
sign so we leave those as is. We also introduce some signed helpers
which are used for loading immediate values in the translator.
Fixes: 282dffc8
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191021150910.23216-1-alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Change the handling of port F0h writes and FPU exceptions to implement IGNNE.
The implementation mixes a bit what the chipset and processor do in real
hardware, but the effect is the same as what happens with actual FERR#
and IGNNE# pins: writing to port F0h asserts IGNNE# in addition to lowering
FP_IRQ; while clearing the SE bit in the FPU status word deasserts IGNNE#.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move it out of pc.c since it is strictly tied to TCG. This is
almost exclusively code movement, the next patch will implement
IGNNE.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are three page size in qemu:
real host page size
host page size
target page size
All of them have dedicate variable to represent. For the last two, we
use the same form in the whole qemu project, while for the first one we
use two forms: qemu_real_host_page_size and getpagesize().
qemu_real_host_page_size is defined to be a replacement of
getpagesize(), so let it serve the role.
[Note] Not fully tested for some arch or device.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20191013021145.16011-3-richardw.yang@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Remove unnecessary argument and provide separate function for each
instruction.
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1571837825-24438-3-git-send-email-Filip.Bozuta@rt-rk.com>
Remove unnecessary argument and provide separate function for each
instruction.
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1571837825-24438-2-git-send-email-Filip.Bozuta@rt-rk.com>
This makes searches for instances of opcode usages easier.
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1571826227-10583-15-git-send-email-aleksandar.markovic@rt-rk.com>
Mostly fix errors and warnings reported by 'checkpatch.pl -f'.
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1571826227-10583-3-git-send-email-aleksandar.markovic@rt-rk.com>
Mostly fix errors and warnings reported by 'checkpatch.pl -f'.
Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1571826227-10583-2-git-send-email-aleksandar.markovic@rt-rk.com>
This is the payoff.
From perf record -g data of ubuntu 18 boot and shutdown:
BEFORE:
- 23.02% 2.82% qemu-system-aar [.] helper_lookup_tb_ptr
- 20.22% helper_lookup_tb_ptr
+ 10.05% tb_htable_lookup
- 9.13% cpu_get_tb_cpu_state
3.20% aa64_va_parameters_both
0.55% fp_exception_el
- 11.66% 4.74% qemu-system-aar [.] cpu_get_tb_cpu_state
- 6.96% cpu_get_tb_cpu_state
3.63% aa64_va_parameters_both
0.60% fp_exception_el
0.53% sve_exception_el
AFTER:
- 16.40% 3.40% qemu-system-aar [.] helper_lookup_tb_ptr
- 13.03% helper_lookup_tb_ptr
+ 11.19% tb_htable_lookup
0.55% cpu_get_tb_cpu_state
0.98% 0.71% qemu-system-aar [.] cpu_get_tb_cpu_state
0.87% 0.24% qemu-system-aar [.] rebuild_hflags_a64
Before, helper_lookup_tb_ptr is the second hottest function in the
application, consuming almost a quarter of the runtime. Within the
entire execution, cpu_get_tb_cpu_state consumes about 12%.
After, helper_lookup_tb_ptr has dropped to the fourth hottest function,
with consumption dropping to a sixth of the runtime. Within the
entire execution, cpu_get_tb_cpu_state has dropped below 1%, and the
supporting function to rebuild hflags also consumes about 1%.
Assertions are retained for --enable-debug-tcg.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Continue setting, but not relying upon, env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Continue setting, but not relying upon, env->hflags.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Continue setting, but not relying upon, env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Continue setting, but not relying upon, env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-18-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Begin setting, but not relying upon, env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This functions are given the mode and el state of the cpu
and writes the computed value to env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
By performing this store early, we avoid having to save and restore
the register holding the address around any function calls.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This function assumes nothing about the current state of the cpu,
and writes the computed value to env->hflags.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There are 3 conditions that each enable this flag. M-profile always
enables; A-profile with EL1 as AA64 always enables. Both of these
conditions can easily be cached. The final condition relies on the
FPEXC register which we are not prepared to cache.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Hoist the variable load for PSTATE into the existing test vs is_a64.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We do not need to compute any of these values for M-profile.
Further, XSCALE_CPAR overlaps VECSTRIDE so obviously the two
sets must be mutually exclusive.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Create a function to compute the values of the TBFLAG_ANY bits
that will be cached, and are used by A-profile.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Currently a trivial wrapper for rebuild_hflags_common_32.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Hoist the computation of some TBFLAG_A32 bits that only apply to
M-profile under a single test for ARM_FEATURE_M.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Create a function to compute the values of the TBFLAG_A32 bits
that will be cached, and are used by M-profile.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Set TBFLAG_ANY.BE_DATA in rebuild_hflags_common_32 and
rebuild_hflags_a64 instead of rebuild_hflags_common, where we do
not need to re-test is_a64() nor re-compute the various inputs.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Create a function to compute the values of the TBFLAG_A32 bits
that will be cached, and are used by all profiles.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Create a function to compute the values of the TBFLAG_A64 bits
that will be cached. For now, the env->hflags variable is not
used, and the results are fed back to cpu_get_tb_cpu_state.
Note that not all BTI related flags are cached, so we have to
test the BTI feature twice -- once for those bits moved out to
rebuild_hflags_a64 and once for those bits that remain in
cpu_get_tb_cpu_state.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
