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[PULL,06/45] host/i386: assume presence of SSSE3

Message ID 20240604064409.957105-7-pbonzini@redhat.com
State New
Headers show
Series [PULL,01/45] virtio-blk: remove SCSI passthrough functionality | expand

Commit Message

Paolo Bonzini June 4, 2024, 6:43 a.m. UTC 
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>
---
 util/cpuinfo-i386.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c
index ca74ef04f54..6d474a6259a 100644
--- a/util/cpuinfo-i386.c
+++ b/util/cpuinfo-i386.c
@@ -38,8 +38,8 @@  unsigned __attribute__((constructor)) cpuinfo_init(void)
         info |= (c & bit_POPCNT ? CPUINFO_POPCNT : 0);
         info |= (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0);
 
-        /* Our AES support requires PSHUFB as well. */
-        info |= ((c & bit_AES) && (c & bit_SSSE3) ? CPUINFO_AES : 0);
+        /* NOTE: our AES support requires SSSE3 (PSHUFB) as well. */
+        info |= (c & bit_AES) ? CPUINFO_AES : 0;
 
         /* For AVX features, we must check available and usable. */
         if ((c & bit_AVX) && (c & bit_OSXSAVE)) {