Commit Graph

106080 Commits

Author SHA1 Message Date
Jean-Philippe Brucker
f1269a98aa target/arm: Skip granule protection checks for AT instructions
GPC checks are not performed on the output address for AT instructions,
as stated by ARM DDI 0487J in D8.12.2:

  When populating PAR_EL1 with the result of an address translation
  instruction, granule protection checks are not performed on the final
  output address of a successful translation.

Rename get_phys_addr_with_secure(), since it's only used to handle AT
instructions.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230809123706.1842548-4-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:12 +01:00
Jean-Philippe Brucker
ceaa97465f target/arm/helper: Fix tlbmask and tlbbits for TLBI VAE2*
When HCR_EL2.E2H is enabled, TLB entries are formed using the EL2&0
translation regime, instead of the EL2 translation regime. The TLB VAE2*
instructions invalidate the regime that corresponds to the current value
of HCR_EL2.E2H.

At the moment we only invalidate the EL2 translation regime. This causes
problems with RMM, which issues TLBI VAE2IS instructions with
HCR_EL2.E2H enabled. Update vae2_tlbmask() to take HCR_EL2.E2H into
account.

Add vae2_tlbbits() as well, since the top-byte-ignore configuration is
different between the EL2&0 and EL2 regime.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230809123706.1842548-3-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:11 +01:00
Jean-Philippe Brucker
da64251e93 target/arm/ptw: Load stage-2 tables from realm physical space
In realm state, stage-2 translation tables are fetched from the realm
physical address space (R_PGRQD).

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230809123706.1842548-2-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:11 +01:00
Peter Maydell
b17d86eb5e target/arm: Adjust PAR_EL1.SH for Device and Normal-NC memory types
The PAR_EL1.SH field documents that for the cases of:
 * Device memory
 * Normal memory with both Inner and Outer Non-Cacheable
the field should be 0b10 rather than whatever was in the
translation table descriptor field. (In the pseudocode this
is handled by PAREncodeShareability().) Perform this
adjustment when assembling a PAR value.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-16-peter.maydell@linaro.org
2023-08-22 17:31:10 +01:00
Peter Maydell
a729d63642 target/arm/ptw: Report stage 2 fault level for stage 2 faults on stage 1 ptw
When we report faults due to stage 2 faults during a stage 1
page table walk, the 'level' parameter should be the level
of the walk in stage 2 that faulted, not the level of the
walk in stage 1. Correct the reporting of these faults.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-15-peter.maydell@linaro.org
2023-08-22 17:31:10 +01:00
Peter Maydell
d53e25075b target/arm/ptw: Check for block descriptors at invalid levels
The architecture doesn't permit block descriptors at any arbitrary
level of the page table walk; it depends on the granule size which
levels are permitted.  We implemented only a partial version of this
check which assumes that block descriptors are valid at all levels
except level 3, which meant that we wouldn't deliver the Translation
fault for all cases of this sort of guest page table error.

Implement the logic corresponding to the pseudocode
AArch64.DecodeDescriptorType() and AArch64.BlockDescSupported().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-14-peter.maydell@linaro.org
2023-08-22 17:31:10 +01:00
Peter Maydell
3d9ca96221 target/arm/ptw: Set attributes correctly for MMU disabled data accesses
When the MMU is disabled, data accesses should be Device nGnRnE,
Outer Shareable, Untagged.  We handle the other cases from
AArch64.S1DisabledOutput() correctly but missed this one.
Device nGnRnE is memattr == 0, so the only part we were missing
was that shareability should be set to 2 for both insn fetches
and data accesses.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-13-peter.maydell@linaro.org
2023-08-22 17:31:09 +01:00
Peter Maydell
b02f5e06bc target/arm/ptw: Drop S1Translate::out_secure
We only use S1Translate::out_secure in two places, where we are
setting up MemTxAttrs for a page table load. We can use
arm_space_is_secure(ptw->out_space) instead, which guarantees
that we're setting the MemTxAttrs secure and space fields
consistently, and allows us to drop the out_secure field in
S1Translate entirely.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-12-peter.maydell@linaro.org
2023-08-22 17:31:09 +01:00
Peter Maydell
6279f6dcdb target/arm/ptw: Remove S1Translate::in_secure
We no longer look at the in_secure field of the S1Translate struct
anyway, so we can remove it and all the code which sets it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-11-peter.maydell@linaro.org
2023-08-22 17:31:08 +01:00
Peter Maydell
cdbae5e7e1 target/arm/ptw: Remove last uses of ptw->in_secure
Replace the last uses of ptw->in_secure with appropriate
checks on ptw->in_space.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-10-peter.maydell@linaro.org
2023-08-22 17:31:08 +01:00
Peter Maydell
b9c139dc58 target/arm/ptw: Only fold in NSTable bit effects in Secure state
When we do a translation in Secure state, the NSTable bits in table
descriptors may downgrade us to NonSecure; we update ptw->in_secure
and ptw->in_space accordingly.  We guard that check correctly with a
conditional that means it's only applied for Secure stage 1
translations.  However, later on in get_phys_addr_lpae() we fold the
effects of the NSTable bits into the final descriptor attributes
bits, and there we do it unconditionally regardless of the CPU state.
That means that in Realm state (where in_secure is false) we will set
bit 5 in attrs, and later use it to decide to output to non-secure
space.

We don't in fact need to do this folding in at all any more (since
commit 2f1ff4e7b9): if an NSTable bit was set then we have
already set ptw->in_space to ARMSS_NonSecure, and in that situation
we don't look at attrs bit 5.  The only thing we still need to deal
with is the real NS bit in the final descriptor word, so we can just
drop the code that ORed in the NSTable bit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-9-peter.maydell@linaro.org
2023-08-22 17:31:08 +01:00
Peter Maydell
4477020d38 target/arm: Pass an ARMSecuritySpace to arm_is_el2_enabled_secstate()
Pass an ARMSecuritySpace instead of a bool secure to
arm_is_el2_enabled_secstate(). This doesn't change behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-8-peter.maydell@linaro.org
2023-08-22 17:31:07 +01:00
Peter Maydell
2d12bb96bd target/arm/ptw: Pass an ARMSecuritySpace to arm_hcr_el2_eff_secstate()
arm_hcr_el2_eff_secstate() takes a bool secure, which it uses to
determine whether EL2 is enabled in the current security state.
With the advent of FEAT_RME this is no longer sufficient, because
EL2 can be enabled for Secure state but not for Root, and both
of those will pass 'secure == true' in the callsites in ptw.c.

As it happens in all of our callsites in ptw.c we either avoid making
the call or else avoid using the returned value if we're doing a
translation for Root, so this is not a behaviour change even if the
experimental FEAT_RME is enabled.  But it is less confusing in the
ptw.c code if we avoid the use of a bool secure that duplicates some
of the information in the ArmSecuritySpace argument.

Make arm_hcr_el2_eff_secstate() take an ARMSecuritySpace argument
instead. Because we always want to know the HCR_EL2 for the
security state defined by the current effective value of
SCR_EL3.{NSE,NS}, it makes no sense to pass ARMSS_Root here,
and we assert that callers don't do that.

To avoid the assert(), we thus push the call to
arm_hcr_el2_eff_secstate() down into the cases in
regime_translation_disabled() that need it, rather than calling the
function and ignoring the result for the Root space translations.
All other calls to this function in ptw.c are already in places
where we have confirmed that the mmu_idx is a stage 2 translation
or that the regime EL is not 3.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-7-peter.maydell@linaro.org
2023-08-22 17:31:07 +01:00
Peter Maydell
d1289140a0 target/arm/ptw: Pass ARMSecurityState to regime_translation_disabled()
Plumb the ARMSecurityState through to regime_translation_disabled()
rather than just a bool is_secure.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-6-peter.maydell@linaro.org
2023-08-22 17:31:06 +01:00
Peter Maydell
a5637bec4c target/arm/ptw: Pass ptw into get_phys_addr_pmsa*() and get_phys_addr_disabled()
In commit 6d2654ffac we created the S1Translate struct and
used it to plumb through various arguments that we were previously
passing one-at-a-time to get_phys_addr_v5(), get_phys_addr_v6(), and
get_phys_addr_lpae().  Extend that pattern to get_phys_addr_pmsav5(),
get_phys_addr_pmsav7(), get_phys_addr_pmsav8() and
get_phys_addr_disabled(), so that all the get_phys_addr_* functions
we call from get_phys_addr_nogpc() take the S1Translate struct rather
than the mmu_idx and is_secure bool.

(This refactoring is a prelude to having the called functions look
at ptw->is_space rather than using an is_secure boolean.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-5-peter.maydell@linaro.org
2023-08-22 17:31:06 +01:00
Peter Maydell
4f51edd3cd target/arm/ptw: Set s1ns bit in fault info more consistently
The s1ns bit in ARMMMUFaultInfo is documented as "true if
we faulted on a non-secure IPA while in secure state". Both the
places which look at this bit only do so after having confirmed
that this is a stage 2 fault and we're dealing with Secure EL2,
which leaves the ptw.c code free to set the bit to any random
value in the other cases.

Instead of taking advantage of that freedom, consistently
make the bit be set to false for the "not a stage 2 fault
for Secure EL2" cases. This removes some cases where we
were using an 'is_secure' boolean and leaving the reader
guessing about whether that was the right thing for Realm
and Root cases.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-4-peter.maydell@linaro.org
2023-08-22 17:31:05 +01:00
Peter Maydell
f641566074 target/arm/ptw: Don't report GPC faults on stage 1 ptw as stage2 faults
In S1_ptw_translate() we set up the ARMMMUFaultInfo if the attempt to
translate the page descriptor address into a physical address fails.
This used to only be possible if we are doing a stage 2 ptw for that
descriptor address, and so the code always sets fi->stage2 and
fi->s1ptw to true.  However, with FEAT_RME it is also possible for
the lookup of the page descriptor address to fail because of a
Granule Protection Check fault.  These should not be reported as
stage 2, otherwise arm_deliver_fault() will incorrectly set
HPFAR_EL2.  Similarly the s1ptw bit should only be set for stage 2
faults on stage 1 translation table walks, i.e.  not for GPC faults.

Add a comment to the the other place where we might detect a
stage2-fault-on-stage-1-ptw, in arm_casq_ptw(), noting why we know in
that case that it must really be a stage 2 fault and not a GPC fault.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-3-peter.maydell@linaro.org
2023-08-22 17:31:05 +01:00
Peter Maydell
c986d86039 target/arm/ptw: Don't set fi->s1ptw for UnsuppAtomicUpdate fault
For an Unsupported Atomic Update fault where the stage 1 translation
table descriptor update can't be done because it's to an unsupported
memory type, this is a stage 1 abort (per the Arm ARM R_VSXXT).  This
means we should not set fi->s1ptw, because this will cause the code
in the get_phys_addr_lpae() error-exit path to mark it as stage 2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807141514.19075-2-peter.maydell@linaro.org
2023-08-22 17:31:05 +01:00
Akihiko Odaki
43a5e377f4 accel/kvm: Make kvm_dirty_ring_reaper_init() void
The returned value was always zero and had no meaning.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-7-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-08-22 17:31:04 +01:00
Akihiko Odaki
4625742cd2 accel/kvm: Free as when an error occurred
An error may occur after s->as is allocated, for example if the
KVM_CREATE_VM ioctl call fails.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-6-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweaked commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:04 +01:00
Akihiko Odaki
bc3e41a0e8 accel/kvm: Use negative KVM type for error propagation
On MIPS, kvm_arch_get_default_type() returns a negative value when an
error occurred so handle the case. Also, let other machines return
negative values when errors occur and declare returning a negative
value as the correct way to propagate an error that happened when
determining KVM type.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-5-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-08-22 17:31:03 +01:00
Akihiko Odaki
875b3eb88f mips: Report an error when KVM_VM_MIPS_VZ is unavailable
On MIPS, QEMU requires KVM_VM_MIPS_VZ type for KVM. Report an error in
such a case as other architectures do when an error occurred during KVM
type decision.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-4-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-08-22 17:31:03 +01:00
Akihiko Odaki
1ab445af8c accel/kvm: Specify default IPA size for arm64
Before this change, the default KVM type, which is used for non-virt
machine models, was 0.

The kernel documentation says:
> On arm64, the physical address size for a VM (IPA Size limit) is
> limited to 40bits by default. The limit can be configured if the host
> supports the extension KVM_CAP_ARM_VM_IPA_SIZE. When supported, use
> KVM_VM_TYPE_ARM_IPA_SIZE(IPA_Bits) to set the size in the machine type
> identifier, where IPA_Bits is the maximum width of any physical
> address used by the VM. The IPA_Bits is encoded in bits[7-0] of the
> machine type identifier.
>
> e.g, to configure a guest to use 48bit physical address size::
>
>     vm_fd = ioctl(dev_fd, KVM_CREATE_VM, KVM_VM_TYPE_ARM_IPA_SIZE(48));
>
> The requested size (IPA_Bits) must be:
>
>  ==   =========================================================
>   0   Implies default size, 40bits (for backward compatibility)
>   N   Implies N bits, where N is a positive integer such that,
>       32 <= N <= Host_IPA_Limit
>  ==   =========================================================

> Host_IPA_Limit is the maximum possible value for IPA_Bits on the host
> and is dependent on the CPU capability and the kernel configuration.
> The limit can be retrieved using KVM_CAP_ARM_VM_IPA_SIZE of the
> KVM_CHECK_EXTENSION ioctl() at run-time.
>
> Creation of the VM will fail if the requested IPA size (whether it is
> implicit or explicit) is unsupported on the host.
https://docs.kernel.org/virt/kvm/api.html#kvm-create-vm

So if Host_IPA_Limit < 40, specifying 0 as the type will fail. This
actually confused libvirt, which uses "none" machine model to probe the
KVM availability, on M2 MacBook Air.

Fix this by using Host_IPA_Limit as the default type when
KVM_CAP_ARM_VM_IPA_SIZE is available.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-3-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:02 +01:00
Akihiko Odaki
5e0d65909c kvm: Introduce kvm_arch_get_default_type hook
kvm_arch_get_default_type() returns the default KVM type. This hook is
particularly useful to derive a KVM type that is valid for "none"
machine model, which is used by libvirt to probe the availability of
KVM.

For MIPS, the existing mips_kvm_type() is reused. This function ensures
the availability of VZ which is mandatory to use KVM on the current
QEMU.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-2-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: added doc comment for new function]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-08-22 17:31:02 +01:00
Chris Laplante
a9c9bbee85 qtest: microbit-test: add tests for nRF51 DETECT
Exercise the DETECT mechanism of the GPIO peripheral.

Signed-off-by: Chris Laplante <chris@laplante.io>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230728160324.1159090-7-chris@laplante.io
[PMM: fixed coding style nits]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:02 +01:00
Chris Laplante
c7bb6fa6af qtest: irq_intercept_[out/in]: return FAIL if no intercepts are installed
This is much better than just silently failing with OK.

Signed-off-by: Chris Laplante <chris@laplante.io>
Message-id: 20230728160324.1159090-6-chris@laplante.io
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:01 +01:00
Chris Laplante
fe692f7c8c qtest: bail from irq_intercept_in if name is specified
Named interception of in-GPIOs is not supported yet.

Signed-off-by: Chris Laplante <chris@laplante.io>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230728160324.1159090-5-chris@laplante.io
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:01 +01:00
Chris Laplante
a8610f8bd7 qtest: implement named interception of out-GPIO
Adds qtest_irq_intercept_out_named method, which utilizes a new optional
name parameter to the irq_intercept_out qtest command.

Signed-off-by: Chris Laplante <chris@laplante.io>
Message-id: 20230728160324.1159090-4-chris@laplante.io
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:00 +01:00
Chris Laplante
7458dcf4e6 qtest: factor out qtest_install_gpio_out_intercept
Signed-off-by: Chris Laplante <chris@laplante.io>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230728160324.1159090-3-chris@laplante.io
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:00 +01:00
Chris Laplante
8d6b2f947d hw/gpio/nrf51: implement DETECT signal
Implement nRF51 DETECT signal in the GPIO peripheral.

The reference manual makes mention of a per-pin DETECT signal, but these
are not exposed to the user. See https://devzone.nordicsemi.com/f/nordic-q-a/39858/gpio-per-pin-detect-signal-available
for more information. Currently, I don't see a reason to model these.

Signed-off-by: Chris Laplante <chris@laplante.io>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230728160324.1159090-2-chris@laplante.io
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:30:59 +01:00
Richard Henderson
b0dd9a7d6d Open 8.2 development tree
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-22 07:14:07 -07:00
Richard Henderson
7e5a8bb223 Update version for v8.1.0 release
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-22 07:13:44 -07:00
Richard Henderson
0d52116fd8 Update version for v8.1.0-rc4 release
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-15 17:10:57 -07:00
Richard Henderson
408af44d04 tcg/i386: Output %gs prefix in tcg_out_vex_opc
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Merge tag 'pull-tcg-20230814' of https://gitlab.com/rth7680/qemu into staging

tcg/i386: Output %gs prefix in tcg_out_vex_opc

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# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-tcg-20230814' of https://gitlab.com/rth7680/qemu:
  tcg/i386: Output %gs prefix in tcg_out_vex_opc

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-14 19:10:55 -07:00
Richard Henderson
d3b41127c2 tcg/i386: Output %gs prefix in tcg_out_vex_opc
Missing the segment prefix means that user-only fails
to add guest_base for some 128-bit load/store.

Fixes: 098d0fc10d ("tcg/i386: Support 128-bit load/store")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1763
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-12 08:51:12 -07:00
Richard Henderson
bb5f142cb3 Sixth RISC-V PR for 8.1
This is a last minute PR for RISC-V.
 
 The main goal is to fix
 https://gitlab.com/qemu-project/qemu/-/issues/1823
 which is a regression that means the aclint option
 cannot be enabled.
 
 While we are here we also fixup KVM issue.
 
  * KVM: fix mvendorid size
  * Fixup aclint check
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Merge tag 'pull-riscv-to-apply-20230811-3' of https://github.com/alistair23/qemu into staging

Sixth RISC-V PR for 8.1

This is a last minute PR for RISC-V.

The main goal is to fix
https://gitlab.com/qemu-project/qemu/-/issues/1823
which is a regression that means the aclint option
cannot be enabled.

While we are here we also fixup KVM issue.

 * KVM: fix mvendorid size
 * Fixup aclint check

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# 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: 6AE9 02B6 A7CA 877D 6D65  9296 AF7C 9513 0C53 8013

* tag 'pull-riscv-to-apply-20230811-3' of https://github.com/alistair23/qemu:
  hw/riscv/virt.c: change 'aclint' TCG check
  target/riscv/kvm.c: fix mvendorid size in vcpu_set_machine_ids()

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-11 14:47:23 -07:00
Daniel Henrique Barboza
b274c2388e hw/riscv/virt.c: change 'aclint' TCG check
The 'aclint' property is being conditioned with tcg acceleration in
virt_machine_class_init(). But acceleration code starts later than the
class init of the board, meaning that tcg_enabled() will be always be
false during class_init(), and the option is never being declared even
when declaring TCG accel:

$ ./build/qemu-system-riscv64 -M virt,accel=tcg,aclint=on
qemu-system-riscv64: Property 'virt-machine.aclint' not found

Fix it by moving the check from class_init() to machine_init(). Tune the
description to mention that the option is TCG only.

Cc: Philippe Mathieu-Daudé <philmd@linaro.org>
Fixes: c0716c81b ("hw/riscv/virt: Restrict ACLINT to TCG")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1823
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230811160224.440697-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-08-11 14:16:26 -04:00
Daniel Henrique Barboza
136cb9cc03 target/riscv/kvm.c: fix mvendorid size in vcpu_set_machine_ids()
cpu->cfg.mvendorid is a 32 bit field and kvm_set_one_reg() always write
a target_ulong val, i.e. a 64 bit field in a 64 bit host.

Given that we're passing a pointer to the mvendorid field, the reg is
reading 64 bits starting from mvendorid and going 32 bits in the next
field, marchid. Here's an example:

$ ./qemu-system-riscv64 -machine virt,accel=kvm -m 2G -smp 1 \
   -cpu rv64,marchid=0xab,mvendorid=0xcd,mimpid=0xef(...)

(inside the guest)
 # cat /proc/cpuinfo
processor	: 0
hart		: 0
isa		: rv64imafdc_zicbom_zicboz_zihintpause_zbb_sstc
mmu		: sv57
mvendorid	: 0xab000000cd
marchid		: 0xab
mimpid		: 0xef

'mvendorid' was written as a combination of 0xab (the value from the
adjacent field, marchid) and its intended value 0xcd.

Fix it by assigning cpu->cfg.mvendorid to a target_ulong var 'reg' and
use it as input for kvm_set_one_reg(). Here's the result with this patch
applied and using the same QEMU command line:

 # cat /proc/cpuinfo
processor	: 0
hart		: 0
isa		: rv64imafdc_zicbom_zicboz_zihintpause_zbb_sstc
mmu		: sv57
mvendorid	: 0xcd
marchid		: 0xab
mimpid		: 0xef

This bug affects only the generic (rv64) CPUs when running with KVM in a
64 bit env since the 'host' CPU does not allow the machine IDs to be
changed via command line.

Fixes: 1fb5a622f7 ("target/riscv: handle mvendorid/marchid/mimpid for KVM CPUs")
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20230802180058.281385-1-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-08-11 14:16:26 -04:00
Richard Henderson
44e13cb441 pci: last minute bugfixes
two fixes that seem very safe and important enough to sneak
 in before the release.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

pci: last minute bugfixes

two fixes that seem very safe and important enough to sneak
in before the release.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
# 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: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu:
  pci: Fix the update of interrupt disable bit in PCI_COMMAND register
  hw/pci-host: Allow extended config space access for Designware PCIe host

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-11 10:28:24 -07:00
Guoyi Tu
0f936247e8 pci: Fix the update of interrupt disable bit in PCI_COMMAND register
The PCI_COMMAND register is located at offset 4 within
the PCI configuration space and occupies 2 bytes. The
interrupt disable bit is at the 10th bit, which corresponds
to the byte at offset 5 in the PCI configuration space.

In our testing environment, the guest driver may directly
updates the byte at offset 5 in the PCI configuration space.
The backtrace looks like as following:
    at hw/pci/pci.c:1442
    at hw/virtio/virtio-pci.c:605
    val=5, len=1) at hw/pci/pci_host.c:81

In this situation, the range_covers_byte function called
by the pci_default_write_config function will return false,
resulting in the inability to handle the interrupt disable
update event.

To fix this issue, we can use the ranges_overlap function
instead of range_covers_byte to determine whether the interrupt
bit has been updated.

Signed-off-by: Guoyi Tu <tugy@chinatelecom.cn>
Signed-off-by: yuanminghao <yuanmh12@chinatelecom.cn>
Message-Id: <ce2d0437-8faa-4d61-b536-4668f645a959@chinatelecom.cn>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: b6981cb57b ("pci: interrupt disable bit support")
2023-08-11 12:15:24 -04:00
Jason Chien
3d449bc603 hw/pci-host: Allow extended config space access for Designware PCIe host
In pcie_bus_realize(), a root bus is realized as a PCIe bus and a non-root
bus is realized as a PCIe bus if its parent bus is a PCIe bus. However,
the child bus "dw-pcie" is realized before the parent bus "pcie" which is
the root PCIe bus. Thus, the extended configuration space is not accessible
on "dw-pcie". The issue can be resolved by adding the
PCI_BUS_EXTENDED_CONFIG_SPACE flag to "pcie" before "dw-pcie" is realized.

Signed-off-by: Jason Chien <jason.chien@sifive.com>
Message-Id: <20230809102257.25121-1-jason.chien@sifive.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Signed-off-by: Jason Chien &lt;<a href="mailto:jason.chien@sifive.com" target="_blank">jason.chien@sifive.com</a>&gt;<br>
2023-08-11 12:15:24 -04:00
Richard Henderson
3944e93af0 Update version for v8.1.0-rc3 release
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 12:49:56 -07:00
Richard Henderson
70b73990d5 accel/tcg: Avoid reading too much in load_atom_{2,4}
tests/tcg: ensure system-mode gdb tests start stopped
 gdbstub: more fixes for client Ctrl-C handling
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Merge tag 'pull-tcg-20230810' of https://gitlab.com/rth7680/qemu into staging

accel/tcg: Avoid reading too much in load_atom_{2,4}
tests/tcg: ensure system-mode gdb tests start stopped
gdbstub: more fixes for client Ctrl-C handling

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# gpg: Signature made Thu 10 Aug 2023 11:08:01 AM PDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-tcg-20230810' of https://gitlab.com/rth7680/qemu:
  gdbstub: don't complain about preemptive ACK chars
  gdbstub: more fixes for client Ctrl-C handling
  tests/tcg: ensure system-mode gdb tests start stopped
  accel/tcg: Avoid reading too much in load_atom_{2,4}

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 11:10:01 -07:00
Alex Bennée
f1b0f894c8 gdbstub: don't complain about preemptive ACK chars
When starting a remote connection GDB sends an '+':

  /* Ack any packet which the remote side has already sent.  */
  remote_serial_write ("+", 1);

which gets flagged as a garbage character in the gdbstub state
machine. As gdb does send it out lets be permissive about the handling
so we can better see real issues.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: gdb-patches@sourceware.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230810153640.1879717-9-alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 11:04:34 -07:00
Alex Bennée
3869eb7eee gdbstub: more fixes for client Ctrl-C handling
The original fix caused problems with spurious characters on other
system emulation. So:

  - instead of spamming output make the warning a trace point
  - ensure we only allow a stop reply if it was 0x3

Suggested-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <456ed3318421dd7946bdfb5ceda7e05332da368c.1690910333.git.quic_mathbern@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230810153640.1879717-8-alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 11:04:34 -07:00
Alex Bennée
dad1036f43 tests/tcg: ensure system-mode gdb tests start stopped
Without -S we run into potential races with tests starting before the
gdbstub attaches. We don't need to worry about user-mode as enabling
the gdbstub implies we wait for the initial connection.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230810153640.1879717-7-alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 11:04:34 -07:00
Richard Henderson
6a2c23ddeb accel/tcg: Avoid reading too much in load_atom_{2,4}
When load_atom_extract_al16_or_al8 is inexpensive, we want to use
it early, in order to avoid the overhead of required_atomicity.
However, we must not read past the end of the page.

If there are more than 8 bytes remaining, then both the "aligned 16"
and "aligned 8" paths align down so that the read has at least
16 bytes remaining on the page.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-10 10:59:24 -07:00
Richard Henderson
64d3be986f OpenRISC FPU Fix for 8.1
A patch to pass the correct exception address when handling floating
 point exceptions.
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Merge tag 'or1k-pull-request-20230809' of https://github.com/stffrdhrn/qemu into staging

OpenRISC FPU Fix for 8.1

A patch to pass the correct exception address when handling floating
point exceptions.

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# gpg: Signature made Wed 09 Aug 2023 01:31:23 PM PDT
# gpg:                using RSA key D9C47354AEF86C103A25EFF1C3B31C2D5E6627E4
# gpg: Good signature from "Stafford Horne <shorne@gmail.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: D9C4 7354 AEF8 6C10 3A25  EFF1 C3B3 1C2D 5E66 27E4

* tag 'or1k-pull-request-20230809' of https://github.com/stffrdhrn/qemu:
  target/openrisc: Set EPCR to next PC on FPE exceptions

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-09 15:05:02 -07:00
Richard Henderson
e53e2e2a1b linux-user: Fixes for mmap syscall emulation
linux-user: Correctly detect access to /proc in openat
 util/interval-tree: Check root for null in interval_tree_iter_first
 tests/tcg: Disable filename test for info proc mappings
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Merge tag 'pull-lu-20230809' of https://gitlab.com/rth7680/qemu into staging

linux-user: Fixes for mmap syscall emulation
linux-user: Correctly detect access to /proc in openat
util/interval-tree: Check root for null in interval_tree_iter_first
tests/tcg: Disable filename test for info proc mappings

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# gpg: Signature made Wed 09 Aug 2023 10:46:22 AM PDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-lu-20230809' of https://gitlab.com/rth7680/qemu:
  linux-user: Fix openat() emulation to correctly detect accesses to /proc
  util/interval-tree: Check root for null in interval_tree_iter_first
  tests/tcg: Disable filename test for info proc mappings
  linux-user: Use ARRAY_SIZE with bitmask_transtbl
  linux-user: Split out do_mmap
  qemu/osdep: Remove fallback for MAP_FIXED_NOREPLACE

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-09 10:48:46 -07:00
Richard Henderson
c0b7823b2d hw/nvme: fixes
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Merge tag 'nvme-fixes-pull-request' of https://gitlab.com/birkelund/qemu into staging

hw/nvme: fixes

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# gpg: Signature made Wed 09 Aug 2023 06:36:39 AM PDT
# gpg:                using RSA key 522833AA75E2DCE6A24766C04DE1AF316D4F0DE9
# gpg: Good signature from "Klaus Jensen <its@irrelevant.dk>" [unknown]
# gpg:                 aka "Klaus Jensen <k.jensen@samsung.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: DDCA 4D9C 9EF9 31CC 3468  4272 63D5 6FC5 E55D A838
#      Subkey fingerprint: 5228 33AA 75E2 DCE6 A247  66C0 4DE1 AF31 6D4F 0DE9

* tag 'nvme-fixes-pull-request' of https://gitlab.com/birkelund/qemu:
  hw/nvme: fix null pointer access in ruh update
  hw/nvme: fix null pointer access in directive receive

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-09 10:48:30 -07:00