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Thu, 09 Apr 2026 08:02:42 -0700 (PDT) Message-ID: <85e5d61e-3a9a-44bd-9c79-37762c6ee2e6@suse.com> Date: Thu, 9 Apr 2026 17:02:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH v4 02/16] x86emul: support AVX10 forms of SM4 insns From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Teddy Astie References: <1e2ff012-b07a-43be-9ba6-290b38d3c97c@suse.com> Content-Language: en-US Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <1e2ff012-b07a-43be-9ba6-290b38d3c97c@suse.com> Content-Transfer-Encoding: quoted-printable X-purgate-ID: tlsNG-33051d/1775746969-41B15C9A-99843D8C/0/0 X-purgate-type: clean X-purgate-size: 3152 X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1775746993133154100 Content-Type: text/plain; charset="utf-8" Simply clone the VEX-encoded handling to cover the EVEX forms. Signed-off-by: Jan Beulich --- SDE: -dmr / -future --- v4: Address v3 TODO. Move ahead in series, switching feature dependency to plain AVX10. Add call to avx512_vlen_check(). v3: New. --- a/tools/tests/x86_emulator/evex-disp8.c +++ b/tools/tests/x86_emulator/evex-disp8.c @@ -727,6 +727,11 @@ static const struct test movrs_all[] =3D { INSN(movrsw, f2, map5, 6f, vl, w, vl), }; =20 +static const struct test sm4_all[] =3D { + INSN(sm4key4, f3, 0f38, da, vl, d_nb, vl), + INSN(sm4rnds4, f2, 0f38, da, vl, d_nb, vl), +}; + static const unsigned char vl_all[] =3D { VL_512, VL_128, VL_256 }; static const unsigned char vl_128[] =3D { VL_128 }; static const unsigned char vl_no128[] =3D { VL_512, VL_256 }; @@ -1124,5 +1129,6 @@ void evex_disp8_test(void *instr, struct if ( cpu_has_avx10 ) { run(ctxt->addr_size =3D=3D 64 && cpu_has_movrs, movrs, all); + run(cpu_has_sm4, sm4, all); } } --- a/tools/tests/x86_emulator/predicates.c +++ b/tools/tests/x86_emulator/predicates.c @@ -2025,6 +2025,8 @@ static const struct evex { { { 0xcc }, 2, T, R, pfx_66, Wn, L2 }, /* vrsqrt28p{s,d} */ { { 0xcd }, 2, T, R, pfx_66, Wn, LIG }, /* vrsqrt28s{s,d} */ { { 0xcf }, 2, T, R, pfx_66, W0, Ln }, /* vgf2p8mulb */ + { { 0xda }, 2, T, R, pfx_f3, W0, Ln }, /* vsm4key4 */ + { { 0xda }, 2, T, R, pfx_f2, W0, Ln }, /* vsm4rnds4 */ { { 0xdc }, 2, T, R, pfx_66, WIG, Ln }, /* vaesenc */ { { 0xdd }, 2, T, R, pfx_66, WIG, Ln }, /* vaesenclast */ { { 0xde }, 2, T, R, pfx_66, WIG, Ln }, /* vaesdec */ --- a/xen/arch/x86/x86_emulate/decode.c +++ b/xen/arch/x86/x86_emulate/decode.c @@ -438,7 +438,7 @@ static const struct ext0f38_table { [0xd3] =3D { .simd_size =3D simd_other }, [0xd6] =3D { .simd_size =3D simd_other, .d8s =3D d8s_vl }, [0xd7] =3D { .simd_size =3D simd_scalar_vexw, .d8s =3D d8s_dq }, - [0xda] =3D { .simd_size =3D simd_other }, + [0xda] =3D { .simd_size =3D simd_other, .d8s =3D d8s_vl }, [0xdb] =3D { .simd_size =3D simd_packed_int, .two_op =3D 1 }, [0xdc ... 0xdf] =3D { .simd_size =3D simd_packed_int, .d8s =3D d8s_vl = }, [0xe0 ... 0xef] =3D { .to_mem =3D 1 }, --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -6819,6 +6819,15 @@ x86_emulate( op_bytes =3D 16 << vex.l; goto simd_0f_ymm; =20 + case X86EMUL_OPC_EVEX_F3(0x0f38, 0xda): /* vsm4key4 [xyz]mm/mem,[xyz]m= m,[xyz]mm */ + case X86EMUL_OPC_EVEX_F2(0x0f38, 0xda): /* vsm4rnds4 [xyz]mm/mem,[xyz]= mm,[xyz]mm */ + vcpu_must_have(avx10); + vcpu_must_have(sm4); + generate_exception_if(evex.w || evex.brs || evex.opmsk, X86_EXC_UD= ); + avx512_vlen_check(false); + op_bytes =3D 16 << evex.lr; + goto simd_zmm; + case X86EMUL_OPC_VEX_66(0x0f38, 0xdc): /* vaesenc {x,y}mm/mem,{x,y}mm= ,{x,y}mm */ case X86EMUL_OPC_VEX_66(0x0f38, 0xdd): /* vaesenclast {x,y}mm/mem,{x,= y}mm,{x,y}mm */ case X86EMUL_OPC_VEX_66(0x0f38, 0xde): /* vaesdec {x,y}mm/mem,{x,y}mm= ,{x,y}mm */