Commit Graph

1707 Commits

Author SHA1 Message Date
Marc-André Lureau
8a5b974b98 memory: follow Error API guidelines
Return true/false on success/failure.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231009075310.153617-1-marcandre.lureau@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-10-19 23:13:27 +02:00
Paolo Bonzini
24b34590d0 target/i386: check intercept for XSETBV
Note that this intercept is special; it is checked before the #GP
exception.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-17 15:20:53 +02:00
Xiaoyao Li
83629b1461 target/i386/cpu: Fix CPUID_HT exposure
When explicitly booting a multiple vcpus vm with "-cpu +ht", it gets
warning of

  warning: host doesn't support requested feature: CPUID.01H:EDX.ht [bit 28]

Make CPUID_HT as supported unconditionally can resolve the warning.
However it introduces another issue that it also expose CPUID_HT to
guest when "-cpu host/max" with only 1 vcpu. To fix this, need mark
CPUID_HT as the no_autoenable_flags.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-ID: <20231010060539.210258-1-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-17 15:20:46 +02:00
Paolo Bonzini
c35b2fb1fd target/i386: fix shadowed variable pasto
Commit a908985971 ("target/i386/seg_helper: introduce tss_set_busy",
2023-09-26) failed to use the tss_selector argument of the new function,
which was therefore unused.

This shows up as a #GP fault when booting old versions of 32-bit
Linux.

Fixes: a908985971 ("target/i386/seg_helper: introduce tss_set_busy", 2023-09-26)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20231011135350.438492-1-pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-12 16:37:31 +02:00
Akihiko Odaki
a650683871 hw/core/cpu: Return static value with gdb_arch_name()
All implementations of gdb_arch_name() returns dynamic duplicates of
static strings. It's also unlikely that there will be an implementation
of gdb_arch_name() that returns a truly dynamic value due to the nature
of the function returning a well-known identifiers. Qualify the value
gdb_arch_name() with const and make all of its implementations return
static strings.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230912224107.29669-8-akihiko.odaki@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231009164104.369749-15-alex.bennee@linaro.org>
2023-10-11 08:46:33 +01:00
Philippe Mathieu-Daudé
01c85e60a4 meson: Rename target_softmmu_arch -> target_system_arch
Finish the convertion started with commit de6cd7599b
("meson: Replace softmmu_ss -> system_ss"). If the
$target_type is 'system', then use the target_system_arch[]
source set :)

Mechanical change doing:

  $ sed -i -e s/target_softmmu_arch/target_system_arch/g \
      $(git grep -l target_softmmu_arch)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004090629.37473-13-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-07 19:03:07 +02:00
Philippe Mathieu-Daudé
5338977abd target/i386: Rename i386_softmmu_kvm_ss -> i386_kvm_ss
Software MMU is TCG specific. Here 'softmmu' is misused
for system emulation. Anyhow, since KVM is system emulation
specific, just rename as 'i386_kvm_ss'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004090629.37473-10-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-07 19:02:59 +02:00
Philippe Mathieu-Daudé
1da389c5db target/i386: Check for USER_ONLY definition instead of SOFTMMU one
Since we *might* have user emulation with softmmu,
replace the system emulation check by !user emulation one.

(target/ was cleaned from invalid CONFIG_SOFTMMU uses at
commit cab35c73be, but these files were merged few days
after, thus missed the cleanup.)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004082239.27251-1-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-07 19:02:33 +02:00
Philippe Mathieu-Daudé
044431cfe7 sysemu/kvm: Restrict hvf_get_supported_cpuid() to x86 targets
hvf_get_supported_cpuid() is only defined for x86 targets
(in target/i386/hvf/x86_cpuid.c).
Its declaration is pointless on all other targets.

All the calls to it in target/i386/cpu.c are guarded by
a call on hvf_enabled(), so are elided when HVF is not
built in. Therefore we can remove the unnecessary function
stub.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004092510.39498-3-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-07 19:02:32 +02:00
Philippe Mathieu-Daudé
6da9447929 target/i386/hvf: Remove unused includes in 'hvf-i386.h'
The only non standard type -- CPUArchState -- is forward
declared in "qemu/typedefs.h", so no particular header is
required here.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Roman Bolshakov <roman@roolebo.dev>
Tested-by: Roman Bolshakov <roman@roolebo.dev>
Message-ID: <20231004092510.39498-2-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-10-07 19:02:32 +02:00
Richard Henderson
8fa08d7ec7 accel/tcg: Remove cpu_set_cpustate_pointers
This function is now empty, so remove it.  In the case of
m68k and tricore, this empties the class instance initfn,
so remove those as well.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04 11:03:54 -07:00
Richard Henderson
b77af26e97 accel/tcg: Replace CPUState.env_ptr with cpu_env()
Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04 11:03:54 -07:00
Richard Henderson
ad75a51e84 tcg: Rename cpu_env to tcg_env
Allow the name 'cpu_env' to be used for something else.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:01:02 -07:00
Richard Henderson
3b3d7df545 accel/tcg: Move CPUNegativeOffsetState into CPUState
Retain the separate structure to emphasize its importance.
Enforce CPUArchState always follows CPUState without padding.

Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:01:02 -07:00
Richard Henderson
f669c99241 target/*: Add instance_align to all cpu base classes
The omission of alignment has technically been wrong since
269bd5d8f6, where QEMU_ALIGNED was added to CPUTLBDescFast.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:01:02 -07:00
Philippe Mathieu-Daudé
bd684b2f3f accel: Rename accel_cpu_realize() -> accel_cpu_common_realize()
accel_cpu_realize() is a generic function working with CPUs
from any target. Rename it using '_common_' to emphasis it is
not target specific.

Suggested-by: Claudio Fontana <cfontana@suse.de>

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231003123026.99229-4-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:00:25 -07:00
Philippe Mathieu-Daudé
6294e502a9 accel: Rename AccelCPUClass::cpu_realizefn() -> cpu_target_realize()
The AccelCPUClass::cpu_realizefn handler is meant for target
specific code, rename it using '_target_' to emphasis it.

Suggested-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231003123026.99229-3-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:00:25 -07:00
Philippe Mathieu-Daudé
e5dc722ca9 accel: Rename accel_cpu_realizefn() -> accel_cpu_realize()
We use the '*fn' suffix for handlers, this is a public method.
Drop the suffix.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20231003123026.99229-2-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03 08:00:25 -07:00
Paolo Bonzini
1bce34aaa9 target/i386/svm_helper: eliminate duplicate local variable
This shadows an outer "cs" variable that is initialized to the
same expression.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Paolo Bonzini
49958057a2 target/i386/seg_helper: remove shadowed variable
Return the width of the new task directly from switch_tss_ra.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Paolo Bonzini
a908985971 target/i386/seg_helper: introduce tss_set_busy
Eliminate a shadowed local variable in the process.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Paolo Bonzini
19729affe1 target/i386/translate: avoid shadowed local variables
Just remove the declaration.  There is nothing in the function after the
switch statement, so it is safe to do.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Paolo Bonzini
637123a213 target/i386/cpu: avoid shadowed local variables
Reuse the pointer variable used for the unversioned model.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Paolo Bonzini
e0c3ef715b target/i386/kvm: eliminate shadowed local variables
These are harmless are they die immediately after their use.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-26 16:41:49 +02:00
Stefan Hajnoczi
29578f5757 * add host ticks function for RISC-V
* target/i386: Export GDS_NO bit
 * target/i386: add support for bit 56 of MSR_IA32_VMX_BASIC
 * first part of audiodev cleanups
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* add host ticks function for RISC-V
* target/i386: Export GDS_NO bit
* target/i386: add support for bit 56 of MSR_IA32_VMX_BASIC
* first part of audiodev cleanups

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# gpg: Signature made Fri 22 Sep 2023 11:40:53 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# 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

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  vl: recognize audiodev groups in configuration files
  tests/qtest: Specify audiodev= and -audiodev
  hw/display/xlnx_dp.c: Add audiodev property
  hw/audio/lm4549: Add errp error reporting to init function
  hw/audio: Simplify hda audio init
  hw/input/tsc210x: Extract common init code into new function
  qemu/timer: Add host ticks function for RISC-V
  target/i386: Export GDS_NO bit to guests
  target/i386: enumerate bit 56 of MSR_IA32_VMX_BASIC

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-25 10:09:38 -04:00
Pawan Gupta
3a2a1f97ea target/i386: Export GDS_NO bit to guests
Gather Data Sampling (GDS) is a side-channel attack using Gather
instructions. Some Intel processors will set ARCH_CAP_GDS_NO bit in
MSR IA32_ARCH_CAPABILITIES to report that they are not vulnerable to
GDS.

Make this bit available to guests.

Closes: https://lore.kernel.org/qemu-devel/CAMGffEmG6TNq0n3+4OJAgXc8J0OevY60KHZekXCBs3LoK9vehA@mail.gmail.com/
Reported-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Tested-by: Jack Wang <jinpu.wang@ionos.com>
Tested-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Message-ID: <fde42d81ce454477ca8e27d5429a190b7366fe86.1692074650.git.pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-21 10:39:51 +02:00
Paolo Bonzini
0c49c9180c target/i386: enumerate bit 56 of MSR_IA32_VMX_BASIC
On parts that enumerate IA32_VMX_BASIC MSR bit as 1, any exception vector
can be delivered with or without an error code if the other consistency
checks are satisfied.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-21 10:39:51 +02:00
Michael Tokarev
bad5cfcd60 i386: spelling fixes
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2023-09-20 07:54:34 +03:00
Richard Henderson
7fcb505455 target/i386: Use clmul_64
Use generic routine for 64-bit carry-less multiply.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-15 13:57:00 +00:00
Philippe Mathieu-Daudé
d047402436 target/i386: Call accel-agnostic x86_cpu_get_supported_cpuid()
x86_cpu_get_supported_cpuid() is generic and handles the different
accelerators. Use it instead of kvm_arch_get_supported_cpuid().

That fixes a link failure introduced by commit 3adce820cf
("target/i386: Remove unused KVM stubs") when QEMU is configured
as:

  $ ./configure --cc=clang \
    --target-list=x86_64-linux-user,x86_64-softmmu \
    --enable-debug

We were getting:

  [71/71] Linking target qemu-x86_64
  FAILED: qemu-x86_64
  /usr/bin/ld: libqemu-x86_64-linux-user.fa.p/target_i386_cpu.c.o: in function `cpu_x86_cpuid':
  cpu.c:(.text+0x1374): undefined reference to `kvm_arch_get_supported_cpuid'
  /usr/bin/ld: libqemu-x86_64-linux-user.fa.p/target_i386_cpu.c.o: in function `x86_cpu_filter_features':
  cpu.c:(.text+0x81c2): undefined reference to `kvm_arch_get_supported_cpuid'
  /usr/bin/ld: cpu.c:(.text+0x81da): undefined reference to `kvm_arch_get_supported_cpuid'
  /usr/bin/ld: cpu.c:(.text+0x81f2): undefined reference to `kvm_arch_get_supported_cpuid'
  /usr/bin/ld: cpu.c:(.text+0x820a): undefined reference to `kvm_arch_get_supported_cpuid'
  /usr/bin/ld: libqemu-x86_64-linux-user.fa.p/target_i386_cpu.c.o:cpu.c:(.text+0x8225): more undefined references to `kvm_arch_get_supported_cpuid' follow
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  ninja: build stopped: subcommand failed.

For the record, this is because '--enable-debug' disables
optimizations (CFLAGS=-O0).

While at this (un)optimization level GCC eliminate the
following dead code (CPP output of mentioned build):

 static void x86_cpu_get_supported_cpuid(uint32_t func, uint32_t index,
                                         uint32_t *eax, uint32_t *ebx,
                                         uint32_t *ecx, uint32_t *edx)
 {
     if ((0)) {
         *eax = kvm_arch_get_supported_cpuid(kvm_state, func, index, R_EAX);
         *ebx = kvm_arch_get_supported_cpuid(kvm_state, func, index, R_EBX);
         *ecx = kvm_arch_get_supported_cpuid(kvm_state, func, index, R_ECX);
         *edx = kvm_arch_get_supported_cpuid(kvm_state, func, index, R_EDX);
     } else if (0) {
         *eax = 0;
         *ebx = 0;
         *ecx = 0;
         *edx = 0;
     } else {
         *eax = 0;
         *ebx = 0;
         *ecx = 0;
         *edx = 0;
     }

Clang does not (see commit 2140cfa51d "i386: Fix build by
providing stub kvm_arch_get_supported_cpuid()").

Cc: qemu-stable@nongnu.org
Fixes: 3adce820cf ("target/i386: Remove unused KVM stubs")
Reported-by: Kevin Wolf <kwolf@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230913093009.83520-4-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-13 12:16:41 +02:00
Philippe Mathieu-Daudé
da472f9487 target/i386: Drop accel_uses_host_cpuid before x86_cpu_get_supported_cpuid
x86_cpu_get_supported_cpuid() already checks for KVM/HVF
accelerators, so it is not needed to manually check it via
a call to accel_uses_host_cpuid() before calling it.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230913093009.83520-3-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-13 12:16:41 +02:00
Philippe Mathieu-Daudé
652a5f22d8 target/i386: Check kvm_hyperv_expand_features() return value
In case more code is added after the kvm_hyperv_expand_features()
call, check its return value (since it can fail).

Fixes: 071ce4b03b ("i386: expand Hyper-V features during CPU feature expansion time")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230913093009.83520-2-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-13 12:16:40 +02:00
Stefan Hajnoczi
03a3a62fbd * only build util/async-teardown.c when system build is requested
* target/i386: fix BQL handling of the legacy FERR interrupts
 * target/i386: fix memory operand size for CVTPS2PD
 * target/i386: Add support for AMX-COMPLEX in CPUID enumeration
 * compile plugins on Darwin
 * configure and meson cleanups
 * drop mkvenv support for Python 3.7 and Debian10
 * add wrap file for libblkio
 * tweak KVM stubs
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* only build util/async-teardown.c when system build is requested
* target/i386: fix BQL handling of the legacy FERR interrupts
* target/i386: fix memory operand size for CVTPS2PD
* target/i386: Add support for AMX-COMPLEX in CPUID enumeration
* compile plugins on Darwin
* configure and meson cleanups
* drop mkvenv support for Python 3.7 and Debian10
* add wrap file for libblkio
* tweak KVM stubs

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# =dH7/
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 07 Sep 2023 07:44:37 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# 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

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (51 commits)
  docs/system/replay: do not show removed command line option
  subprojects: add wrap file for libblkio
  sysemu/kvm: Restrict kvm_pc_setup_irq_routing() to x86 targets
  sysemu/kvm: Restrict kvm_has_pit_state2() to x86 targets
  sysemu/kvm: Restrict kvm_get_apic_state() to x86 targets
  sysemu/kvm: Restrict kvm_arch_get_supported_cpuid/msr() to x86 targets
  target/i386: Restrict declarations specific to CONFIG_KVM
  target/i386: Allow elision of kvm_hv_vpindex_settable()
  target/i386: Allow elision of kvm_enable_x2apic()
  target/i386: Remove unused KVM stubs
  target/i386/cpu-sysemu: Inline kvm_apic_in_kernel()
  target/i386/helper: Restrict KVM declarations to system emulation
  hw/i386/fw_cfg: Include missing 'cpu.h' header
  hw/i386/pc: Include missing 'cpu.h' header
  hw/i386/pc: Include missing 'sysemu/tcg.h' header
  Revert "mkvenv: work around broken pip installations on Debian 10"
  mkvenv: assume presence of importlib.metadata
  Python: Drop support for Python 3.7
  configure: remove dead code
  meson: list leftover CONFIG_* symbols
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-07 10:29:06 -04:00
Philippe Mathieu-Daudé
bb781b947d sysemu/kvm: Restrict kvm_pc_setup_irq_routing() to x86 targets
kvm_pc_setup_irq_routing() is only defined for x86 targets (in
hw/i386/kvm/apic.c). Its declaration is pointless on all
other targets.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-14-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
fc30abf846 sysemu/kvm: Restrict kvm_has_pit_state2() to x86 targets
kvm_has_pit_state2() is only defined for x86 targets (in
target/i386/kvm/kvm.c). Its declaration is pointless on
all other targets. Have it return a boolean.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-13-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
1f49d47661 sysemu/kvm: Restrict kvm_get_apic_state() to x86 targets
kvm_get_apic_state() is only defined for x86 targets (in
hw/i386/kvm/apic.c). Its declaration is pointless on all
other targets.

Since we include "linux-headers/asm-x86/kvm.h", no need
to forward-declare 'struct kvm_lapic_state'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-12-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
f3f99d2ac1 sysemu/kvm: Restrict kvm_arch_get_supported_cpuid/msr() to x86 targets
kvm_arch_get_supported_cpuid() / kvm_arch_get_supported_msr_feature()
are only defined for x86 targets (in target/i386/kvm/kvm.c). Their
declarations are pointless on other targets.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-11-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
33bc5f1d32 target/i386: Restrict declarations specific to CONFIG_KVM
Keep the function accessed by target/i386/ and hw/i386/
exposed, restrict the ones accessed by target/i386/kvm/.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-10-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
ef1cf6890f target/i386: Allow elision of kvm_hv_vpindex_settable()
Call kvm_enabled() before kvm_hv_vpindex_settable()
to let the compiler elide its call.

kvm-stub.c is now empty, remove it.

Suggested-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-9-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
9926cf34de target/i386: Allow elision of kvm_enable_x2apic()
Call kvm_enabled() before kvm_enable_x2apic() to let the compiler elide
its call.  Cleanup the code by simplifying "!xen_enabled() &&
kvm_enabled()" to just "kvm_enabled()".

Suggested-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-8-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
3adce820cf target/i386: Remove unused KVM stubs
All these functions:

 - kvm_arch_get_supported_cpuid()
 - kvm_has_smm(()
 - kvm_hyperv_expand_features()
 - kvm_set_max_apic_id()

are called after checking for kvm_enabled(), which is
false when KVM is not built. Since the compiler elides
these functions, their stubs are not used and can be
removed.

Inspired-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-7-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
721cf738a5 target/i386/cpu-sysemu: Inline kvm_apic_in_kernel()
In order to have cpu-sysemu.c become accelerator-agnostic,
inline kvm_apic_in_kernel() -- which is a simple wrapper
to kvm_irqchip_in_kernel() -- and use the generic "sysemu/kvm.h"
header.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-6-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Philippe Mathieu-Daudé
28a43cb4dc target/i386/helper: Restrict KVM declarations to system emulation
User emulation doesn't need any KVM declarations.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904124325.79040-5-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-07 13:32:37 +02:00
Tao Su
3e76bafb28 target/i386: Add support for AMX-COMPLEX in CPUID enumeration
Latest Intel platform GraniteRapids-D introduces AMX-COMPLEX, which adds
two instructions to perform matrix multiplication of two tiles containing
complex elements and accumulate the results into a packed single precision
tile.

AMX-COMPLEX is enumerated via CPUID.(EAX=7,ECX=1):EDX[bit 8]. Add the CPUID
definition for AMX-COMPLEX, AMX-COMPLEX will be enabled automatically when
using '-cpu host' and KVM advertises AMX-COMPLEX to userspace.

Signed-off-by: Tao Su <tao1.su@linux.intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-ID: <20230830074324.84059-1-tao1.su@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-01 23:44:39 +02:00
Paolo Bonzini
abd41884c5 target/i386: fix memory operand size for CVTPS2PD
CVTPS2PD only loads a half-register for memory, unlike the other
operations under 0x0F 0x5A.  "Unpack" the group into separate
emission functions instead of using gen_unary_fp_sse.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-01 23:44:39 +02:00
Paolo Bonzini
a48b26978a target/i386: generalize operand size "ph" for use in CVTPS2PD
CVTPS2PD only loads a half-register for memory, like CVTPH2PS.  It can
reuse the "ph" packed half-precision size to load a half-register,
but rename it to "xh" because it is now a variation of "x" (it is not
used only for half-precision values).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-01 23:44:39 +02:00
Paolo Bonzini
c1f27a0c6a target/i386: raise FERR interrupt with iothread locked
Otherwise tcg_handle_interrupt() triggers an assertion failure:

  #5  0x0000555555c97369 in tcg_handle_interrupt (cpu=0x555557434cb0, mask=2) at ../accel/tcg/tcg-accel-ops.c:83
  #6  tcg_handle_interrupt (cpu=0x555557434cb0, mask=2) at ../accel/tcg/tcg-accel-ops.c:81
  #7  0x0000555555b4d58b in pic_irq_request (opaque=<optimized out>, irq=<optimized out>, level=1) at ../hw/i386/x86.c:555
  #8  0x0000555555b4f218 in gsi_handler (opaque=0x5555579423d0, n=13, level=1) at ../hw/i386/x86.c:611
  #9  0x00007fffa42bde14 in code_gen_buffer ()
  #10 0x0000555555c724bb in cpu_tb_exec (cpu=cpu@entry=0x555557434cb0, itb=<optimized out>, tb_exit=tb_exit@entry=0x7fffe9bfd658) at ../accel/tcg/cpu-exec.c:457

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1808
Reported-by: NyanCatTW1 <https://gitlab.com/a0939712328>
Co-developed-by: Richard Henderson <richard.henderson@linaro.org>'
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-09-01 23:44:39 +02:00
Philippe Mathieu-Daudé
09b07f286d target/translate: Include missing 'exec/cpu_ldst.h' header
All these files access the CPU LD/ST API declared in "exec/cpu_ldst.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230828221314.18435-4-philmd@linaro.org>
2023-08-31 19:47:43 +02:00
Philippe Mathieu-Daudé
f703f1ef99 bulk: Do not declare function prototypes using 'extern' keyword
By default, C function prototypes declared in headers are visible,
so there is no need to declare them as 'extern' functions.
Remove this redundancy in a single bulk commit; do not modify:

  - meson.build (used to check function availability at runtime)
  - pc-bios/
  - libdecnumber/
  - tests/
  - *.c

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230605175647.88395-5-philmd@linaro.org>
2023-08-31 19:47:43 +02:00
Philippe Mathieu-Daudé
b91b0fc163 accel: Remove HAX accelerator
HAX is deprecated since commits 73741fda6c ("MAINTAINERS: Abort
HAXM maintenance") and 90c167a1da ("docs/about/deprecated: Mark
HAXM in QEMU as deprecated"), released in v8.0.0.

Per the latest HAXM release (v7.8 [*]), the latest QEMU supported
is v7.2:

  Note: Up to this release, HAXM supports QEMU from 2.9.0 to 7.2.0.

The next commit (https://github.com/intel/haxm/commit/da1b8ec072)
added:

  HAXM v7.8.0 is our last release and we will not accept
  pull requests or respond to issues after this.

It became very hard to build and test HAXM. Its previous
maintainers made it clear they won't help.  It doesn't seem to be
a very good use of QEMU maintainers to spend their time in a dead
project. Save our time by removing this orphan zombie code.

[*] https://github.com/intel/haxm/releases/tag/v7.8.0

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230831082016.60885-1-philmd@linaro.org>
2023-08-31 19:46:43 +02:00