diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/assembly/1693667')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/assembly/1693667 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/assembly/1693667 b/results/classifier/deepseek-2-tmp/output/assembly/1693667 new file mode 100644 index 000000000..c1c7eb558 --- /dev/null +++ b/results/classifier/deepseek-2-tmp/output/assembly/1693667 @@ -0,0 +1,29 @@ + +-cpu haswell / broadwell have no MONITOR in features1 + +In qemu 2.9.0 if you run + + qemu-system-x86_64 -cpu Broadwell (or Haswell) + +then the CPU features1 flag include the SSE3 bit, but do NOT include the MONITOR/MWAIT bit. This is so even when the host includes the features. + + +Additionally, running qemu in this manner results in several error messages: + +warning: TCG doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.x2apic [bit 21] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.f16c [bit 29] +warning: TCG doesn't support requested feature: CPUID.01H:ECX.rdrand [bit 30] +warning: TCG doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] +warning: TCG doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] +warning: TCG doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10] +warning: TCG doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] +warning: TCG doesn't support requested feature: CPUID.07H:EBX.rdseed [bit 18] +warning: TCG doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch + + +(Among possible other uses, the lack of the MONITOR feature bit causes NetBSD to fall-back on a +check-and-pause loop while an application CPU is waiting to be told to proceed by the boot CPU.) \ No newline at end of file |