QEMU does not show availability of MPX in CPUID when running under Hypervisor.framework. Therefore, in the unlikely chance that the host has MPX enabled, hide those bits from leaf 0xD as well.
Signed-off-by: Paolo Bonzini <[email protected]> --- target/i386/hvf/x86_cpuid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/i386/hvf/x86_cpuid.c b/target/i386/hvf/x86_cpuid.c index e56cd8411ba..4b184767f4a 100644 --- a/target/i386/hvf/x86_cpuid.c +++ b/target/i386/hvf/x86_cpuid.c @@ -110,9 +110,9 @@ uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx, if (idx == 0) { uint64_t host_xcr0; if (xgetbv(ecx, 0, &host_xcr0)) { + /* Only show xcr0 bits corresponding to usable features. */ uint64_t supp_xcr0 = host_xcr0 & (XSTATE_FP_MASK | XSTATE_SSE_MASK | XSTATE_YMM_MASK | - XSTATE_BNDREGS_MASK | XSTATE_BNDCSR_MASK | XSTATE_OPMASK_MASK | XSTATE_ZMM_Hi256_MASK | XSTATE_Hi16_ZMM_MASK); eax &= supp_xcr0; -- 2.47.0
