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host/i386: assume presence of SSSE3

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QEMU now requires an x86-64-v2 host, which has SSSE3 instructions
(notably, PSHUFB which is used by QEMU's AES implementation).
Do not bother checking it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-05-31 10:22:33 +02:00
parent b18236897c
commit 433cd6d94a
1 changed files with 2 additions and 2 deletions
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4
util/cpuinfo-i386.c
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@ -38,8 +38,8 @@ unsigned __attribute__((constructor)) cpuinfo_init(void)
info |= (c & bit_POPCNT ? CPUINFO_POPCNT : 0); info |= (c & bit_POPCNT ? CPUINFO_POPCNT : 0);
info |= (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0); info |= (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0);
/* Our AES support requires PSHUFB as well. */ /* NOTE: our AES support requires SSSE3 (PSHUFB) as well. */
info |= ((c & bit_AES) && (c & bit_SSSE3) ? CPUINFO_AES : 0); info |= (c & bit_AES) ? CPUINFO_AES : 0;
/* For AVX features, we must check available and usable. */ /* For AVX features, we must check available and usable. */
if ((c & bit_AVX) && (c & bit_OSXSAVE)) { if ((c & bit_AVX) && (c & bit_OSXSAVE)) {