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[37.24.206.209]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2ef68b5272bsm9668798a91.37.2024.12.11.02.29.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 11 Dec 2024 02:29:28 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: cba5fd8c-b7aa-11ef-99a3-01e77a169b0f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1733912970; x=1734517770; darn=lists.xenproject.org; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=ujBTJkvmO2v8Y+beaFy0sSs/m/XktSxubv6Dq+sEiHU=; b=WpepBenUEtHcd9eP9p44o1TQhaimP5b+uJgdYqsmkRilxx0g9Mc8CIJNH+s4Ydort7 X/v+/95BSgPGhcSDIvzWwPpkKGZHEBiD9jxK2dOCJ7yYnKuzwIX6+twYFR0FYKtpyWu7 AYmXurHLzuko3lL+W5aqkVmxwfISWD7wRFNtlSv2B/Rz3/PJ8zlamh4uvjufIbglDfJe Hw+mPcZLr/eFahRKE0m48ZVbBd7vIlRxoeL7159KhWBcG7EW/+urO2sVGwayaqH/ADn6 dB1k13JgyBXxjaLKf3lE587BkPlWGp1F6Q3W0FFUtlhUCkZYRrUnIM/arNzN9+jkTkFT Pxtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733912970; x=1734517770; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ujBTJkvmO2v8Y+beaFy0sSs/m/XktSxubv6Dq+sEiHU=; b=C33MYCOkEE4LFDBmHbAggKIKsoxuNZ8m0jCEJ4noKbQkYEJklxYjMHc74zhKlQcTf6 cXsgKuIppHspJybtEgEiSFIOgYBU0BzrwRZHux8DvEkaH53ZmAFhkIZtsZ/bvC5hfZhR Ql37+Dk1BXWormueD2uGQF6nxru8X0noAkQeFgYTzMB3sd8492TrBMCuvA9qucbv/4xi zywFo/AMyyK60wXR0fAEAxrv5mQ3BnyyyZ/dARq4qgr/8K+bhQAdDE+RS4LjW6L/qE0t 3R56RN7MKYWwRe1y18qAbm0qDi8uuQb/rn0kVcGCxi5Fek2OO00FDxX1vkhWnjTczpUC RADA== X-Gm-Message-State: AOJu0Yw5J6nyGsiWlYgmC6rwp1g13aKebGiZqQlk5nKdNT/2l3cI5k7d 9SIGC652cRyLYUMbCVgAXV2yjhlH6TwUMrbJfXBLOv5hvaGw92DbT7NXdUF/lY9/UTY88JPqDkI = X-Gm-Gg: ASbGncvcH+ji23/IqHDeBbkJIkzPDdl/dDhyrNcYEHj0nfZyCTOmDnCUAvhwMO3+Tcl EQIfhKedWNp/BXFPOHB8fhMPuMthVtkTWMfBI42GBeI3mZwGRgI8u8f5a6BwfcTyqghSNLwqxzJ e82tmAnKWSauOZN9wDMto4ZmjDqqk3EQRKhWfjLSoKhktR6tgifCkJXiU+6UMg+EIBcyiuX1gWK h4uUiV+a5eJDYsbjqZzMqGqVsest0GTSoiGAaQjxluF5caxyXhR3gCo/WZua+rcmhv/0rucmjPu ZkYfYCU0k87IcgyNqQ4a9rG19sk4LnrXtM1QEE0= X-Google-Smtp-Source: AGHT+IFsmYFIMF3UuxSbdCOdljfJU7H1TPXBRv4T6CKWO7LHMapK36wjCrqk58u7z9THYP5g6P/L+Q== X-Received: by 2002:a5d:47a4:0:b0:385:e5d8:3ec2 with SMTP id ffacd0b85a97d-3864cea39aemr1896480f8f.28.1733912968951; Wed, 11 Dec 2024 02:29:28 -0800 (PST) Message-ID: Date: Wed, 11 Dec 2024 11:29:22 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 00/16] x86: support AVX10 From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= References: <516b7f9a-048e-409d-8a4e-89aeb8ffacc4@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: <516b7f9a-048e-409d-8a4e-89aeb8ffacc4@suse.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 11.12.2024 11:09, Jan Beulich wrote: > AVX10.1 is just a re-branding of certain AVX512 (sub)features, i.e. > adds no new instructions. Therefore it's mostly relaxation that needs > doing, plus dealing with the 256-bit-only case that AVX512 itself > does not allow for. Luckily an unnecessary restriction on the mask > register insns was taken out again, simplifying the actual emulator > adjustments quite a bit. > > AVX10.2 is adding quite a few new insns, support for which (new in v3) > is roughly added chapter-wise as the spec has them (perhaps not in the > order of the chapters there). > > While it probably can be rebased ahead, the series in this form > depends on the previously submitted "[PATCH v5 0/3] x86/CPUID: leaf > pruning". It also is assumed to go on top of "[PATCH v7 0/7] x86emul: > misc additions", albeit at most contextual dependencies ought to exit > there. > > I've tried to be very careful in rebasing ahead of other emulator > patches I've been carrying, but almost all testing I've done is with > all of those collectively in place. > > 01: x86/CPUID: enable AVX10 leaf > 02: x86emul: support AVX10.1 > 03: x86emul/test: use simd_check_avx512*() in main() > 04: x86emul/test: drop cpu_has_avx512vl > 05: x86emul: AVX10.1 testing > 06: x86emul/test: engage AVX512VL via command line option > 07: x86emul: support AVX10.2 256-bit embedded rounding / SAE > 08: x86emul: support AVX10.2 scalar compare insns > 09: x86emul: support AVX10.2 partial copy insns > 10: x86emul: support AVX10.2 media insns > 11: x86emul: support AVX10.2 minmax insns > 12: x86emul: support AVX10.2 media insns > 13: x86emul: support AVX10.2 saturating convert insns > 14: x86emul: support other AVX10.2 convert insns > 15: x86emul: support SIMD MOVRS > 16: x86emul: support AVX10.2 forms of SM4 insns I should probably have mentioned here two further opens: 1) Testing. So far I haven't been able to think of a good approach to test some (most?) of the new insns, beyond the EVEX Disp8 and predicates testing that's being taken care of in individual patches. 2) Supposedly there is a way to constrain guests to 256-bit vector size via a VMCS setting. The spec has no details beyond mentioning this fact. Jan