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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1693667 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1693667')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1693667 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1693667 b/results/scraper/launchpad-without-comments/1693667 new file mode 100644 index 00000000..4961a46b --- /dev/null +++ b/results/scraper/launchpad-without-comments/1693667 @@ -0,0 +1,28 @@ +-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 |