Re: [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns

[Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>]

On 15.05.2019 11:23, Jan Beulich wrote:
> Their pre-AVX512 incarnations have clearly been overlooked during much
> earlier work. Their memory access pattern is entirely standard, so no
> specific tests get added to the harness.
> 
> Reported-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Tested-by: Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>

> 
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6624,6 +6624,8 @@ x86_emulate(
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm 
> */
>       case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq 
> {x,y}mm/mem,{x,y}mm,{x,y}mm */
> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd 
> {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw 
> {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */
> 
> 
> 
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> 
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