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target/i386/mshv: change cpuid mask to UINT32_MAX

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The current implementation would only override the feature bits that are
enabled, however we also want to consider disabled features, hence all
bits are set on the masks in the hypercall argument.

Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Doru Blânzeanu <dblanzeanu@linux.microsoft.com>
Link: https://lore.kernel.org/r/20260416121116.527927-5-magnuskulke@linux.microsoft.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Magnus Kulke
2026-04-16 14:11:11 +02:00
committed by Paolo Bonzini
parent c851e0da56
commit 2f6da91e8a
1 changed files with 6 additions and 11 deletions
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17
target/i386/mshv/mshv-cpu.c
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@@ -538,22 +538,17 @@ static int register_intercept_result_cpuid_entry(const CPUState *cpu,
.input.always_override = always_override,
.input.padding = 0,
/*
* With regard to masks - these are to specify bits to be overwritten
* The current CpuidEntry structure wouldn't allow to carry the masks
* in addition to the actual register values. For this reason, the
* masks are set to the exact values of the corresponding register bits
* to be registered for an overwrite. To view resulting values the
* hypervisor would return, HvCallGetVpCpuidValues hypercall can be
* used.
* Masks specify which bits to override. Set to 0xFFFFFFFF to
* override all bits with the values from the QEMU CPU model.
*/
.result.eax = entry->eax,
.result.eax_mask = entry->eax,
.result.eax_mask = 0xFFFFFFFF,
.result.ebx = entry->ebx,
.result.ebx_mask = entry->ebx,
.result.ebx_mask = 0xFFFFFFFF,
.result.ecx = entry->ecx,
.result.ecx_mask = entry->ecx,
.result.ecx_mask = 0xFFFFFFFF,
.result.edx = entry->edx,
.result.edx_mask = entry->edx,
.result.edx_mask = 0xFFFFFFFF,
};
union hv_register_intercept_result_parameters parameters = {
.cpuid = cpuid_params,