[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen staging] x86emul: fix VPBLENDMW with mask and memory operand
commit eddf13b5e9401f6871dcce1ce61c80cff62079ed Author: Jan Beulich <jbeulich@xxxxxxxx> AuthorDate: Mon Feb 14 10:08:38 2022 +0100 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Mon Feb 14 10:08:38 2022 +0100 x86emul: fix VPBLENDMW with mask and memory operand Element size for this opcode depends on EVEX.W, not the low opcode bit. Make use of AVX512BW being a prereq to AVX512_BITALG and move the case label there, adding an AVX512BW feature check. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> --- xen/arch/x86/x86_emulate/x86_emulate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c index 824af9d899..2ba54c6151 100644 --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -7401,7 +7401,6 @@ x86_emulate( case X86EMUL_OPC_EVEX_66(0x0f38, 0x0b): /* vpmulhrsw [xyz]mm/mem,[xyz]mm,[xyz]mm{k} */ case X86EMUL_OPC_EVEX_66(0x0f38, 0x1c): /* vpabsb [xyz]mm/mem,[xyz]mm{k} */ case X86EMUL_OPC_EVEX_66(0x0f38, 0x1d): /* vpabsw [xyz]mm/mem,[xyz]mm{k} */ - case X86EMUL_OPC_EVEX_66(0x0f38, 0x66): /* vpblendm{b,w} [xyz]mm/mem,[xyz]mm,[xyz]mm{k} */ host_and_vcpu_must_have(avx512bw); generate_exception_if(evex.brs, EXC_UD); elem_bytes = 1 << (b & 1); @@ -9558,6 +9557,9 @@ x86_emulate( /* fall through */ case X86EMUL_OPC_EVEX_66(0x0f38, 0x54): /* vpopcnt{b,w} [xyz]mm/mem,[xyz]mm{k} */ host_and_vcpu_must_have(avx512_bitalg); + /* fall through */ + case X86EMUL_OPC_EVEX_66(0x0f38, 0x66): /* vpblendm{b,w} [xyz]mm/mem,[xyz]mm,[xyz]mm{k} */ + host_and_vcpu_must_have(avx512bw); generate_exception_if(evex.brs, EXC_UD); elem_bytes = 1 << evex.w; goto avx512f_no_sae; -- generated by git-patchbot for /home/xen/git/xen.git#staging
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