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authorTim Rowley <[email protected]>2017-07-19 14:18:49 -0500
committerTim Rowley <[email protected]>2017-07-19 15:12:07 -0500
commit131b9f644cbe70728ba02878483e22459400bcb4 (patch)
treed0d7ae4efdbc7a0caabfdaa3e24ab8db5a35a115 /src
parent19c101f704b609eb76d24db230b706a48db155a6 (diff)
gallium/util: fix nondeterministic avx512 detection
cpuid.7 requires cx=0 to select the extended feature leaf. avx512 detection was using the non-indexed cpuid resulting in random non-detection of avx512. Cc: [email protected] Reviewed-by: Roland Scheidegger <[email protected]>
Diffstat (limited to 'src')
-rw-r--r--src/gallium/auxiliary/util/u_cpu_detect.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c
index 3d6ccb58223..4e71041bc9a 100644
--- a/src/gallium/auxiliary/util/u_cpu_detect.c
+++ b/src/gallium/auxiliary/util/u_cpu_detect.c
@@ -438,7 +438,7 @@ util_cpu_detect(void)
(xgetbv() & (0x7 << 5)) && // OPMASK: upper-256 enabled by OS
((xgetbv() & 6) == 6)) { // XMM/YMM enabled by OS
uint32_t regs3[4];
- cpuid(0x00000007, regs3);
+ cpuid_count(0x00000007, 0x00000000, regs3);
util_cpu_caps.has_avx512f = (regs3[1] >> 16) & 1;
util_cpu_caps.has_avx512dq = (regs3[1] >> 17) & 1;
util_cpu_caps.has_avx512ifma = (regs3[1] >> 21) & 1;