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Re: [Xen-devel] [PATCH v7 06/49] x86emul: support AVX512{F, BW, DQ} integer broadcast insns
- To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 14 Mar 2019 16:38:36 +0000
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- Cc: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Delivery-date: Thu, 14 Mar 2019 16:58:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 19/12/2018 14:38, Jan Beulich wrote:
> @@ -8444,6 +8465,45 @@ x86_emulate(
> generate_exception_if(ea.type != OP_MEM || !vex.l || vex.w, EXC_UD);
> goto simd_0f_avx2;
>
> + case X86EMUL_OPC_EVEX_66(0x0f38, 0x78): /* vpbroadcastb
> xmm/m8,[xyz]mm{k} */
> + case X86EMUL_OPC_EVEX_66(0x0f38, 0x79): /* vpbroadcastw
> xmm/m16,[xyz]mm{k} */
> + host_and_vcpu_must_have(avx512bw);
> + generate_exception_if(evex.w || evex.brs, EXC_UD);
> + op_bytes = elem_bytes = 1 << (b & 1);
> + /* See the comment at the avx512_broadcast label. */
> + op_mask |= !(b & 1 ? !(uint32_t)op_mask : !op_mask);
> + goto avx512f_no_sae;
> +
> + case X86EMUL_OPC_EVEX_66(0x0f38, 0x7a): /* vpbroadcastb r32,[xyz]mm{k} */
> + case X86EMUL_OPC_EVEX_66(0x0f38, 0x7b): /* vpbroadcastw r32,[xyz]mm{k} */
> + host_and_vcpu_must_have(avx512bw);
> + generate_exception_if(evex.w, EXC_UD);
> + /* fall through */
> + case X86EMUL_OPC_EVEX_66(0x0f38, 0x7c): /* vpbroadcast{d,q}
> reg,[xyz]mm{k} */
> + generate_exception_if((ea.type != OP_REG || evex.brs ||
> + evex.reg != 0xf || !evex.RX),
> + EXC_UD);
generate_exception_if(ea.type != OP_REG || evex.brs ||
evex.reg != 0xf || !evex.RX, EXC_UD);
?
Otherwise, Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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