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[PATCH v5 00/19] x86: support AVX10
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 11 Nov 2026 14:40:20 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>
- Delivery-date: Wed, 11 Nov 2026 13:40:28 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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. Luckily the 256-bit-only case and 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 is roughly
added chapter-wise as the spec has them (perhaps not in the order of
the chapters there). Same for AVX10.2-aux (new in v5).
AVX10.3 has just had its specification published, so isn't covered
yet.
While it probably could be re-based ahead, the series in this form
depends on the previously submitted "[PATCH v5 0/3] x86/CPUID: leaf
pruning" (which is supposed to be replaced by logic in the toolstack)
and parts of "[PATCH v10 00/10] x86emul: misc additions (MSR accesses)".
01: x86/CPUID: enable AVX10 leaf
02: x86emul: support SIMD MOVRS
03: x86emul: support AVX10.2 forms of SM4 insns
04: x86emul: support AVX10.1
05: x86emul/test: use simd_check_avx512*() in main()
06: x86emul/test: drop cpu_has_avx512vl
07: x86emul: AVX10.1 testing
08: x86emul/test: engage AVX512VL via command line option
09: x86/CPUID: enable AVX10.2 sub-leaf
10: x86emul: support AVX10.2 scalar compare insns
11: x86emul: support AVX10.2 partial copy insns
12: x86emul: support AVX10.2 media insns
13: x86emul: support AVX10.2 minmax insns
14: x86emul: support AVX10.2 BFloat16 insns
15: x86emul: support AVX10.2 saturating convert insns
16: x86emul: support other AVX10.2 convert insns
17: x86emul: support AVX10.2-aux misc insns
18: x86emul: support AVX10.2-aux {B,H}F{4,6} <-> {B,H}F8 converts
19: x86emul: support AVX10.2-aux PS <-> {B,H}F8{,S} converts
Jan
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