Module: Mesa Branch: master Commit: 131b9f644cbe70728ba02878483e22459400bcb4 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=131b9f644cbe70728ba02878483e22459400bcb4
Author: Tim Rowley <timothy.o.row...@intel.com> Date: Wed Jul 19 14:18:49 2017 -0500 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: mesa-sta...@lists.freedesktop.org Reviewed-by: Roland Scheidegger <srol...@vmware.com> --- src/gallium/auxiliary/util/u_cpu_detect.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index 3d6ccb5822..4e71041bc9 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; _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-commit