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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/hypervisor/1904317')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/hypervisor/1904317 | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/hypervisor/1904317 b/results/classifier/deepseek-2-tmp/output/hypervisor/1904317 deleted file mode 100644 index fc7ae78b..00000000 --- a/results/classifier/deepseek-2-tmp/output/hypervisor/1904317 +++ /dev/null @@ -1,23 +0,0 @@ - -cpu feature selection is not affected to guest 's cpuid with whpx - -On windows with -accel whpx, "-cpu" is ignored without any messages. -Guest recognizes features as same as host's. - -Confirmed on v5.2.0-rc1. - -I suggest qemu may do, - -- Warn with incompatible -cpu options were given. -- Enhance cpuid handling. - -Background: -I was investigated mmio and block copy issue in Linux kernel. -I met a problem that Linux went ill for touching mmio with whpx. (not with tcg) -I suspect erms(enhanced rep movs) might trigger. -I tried to mask erms on qemu with -feature,erms, but it was ineffective. - -At last, I disabled erms manually, to tweak whpx-all.c to mask erms in cpuid. - -FYI, qemu with whpx from/to mmio, "rep movsb" does byte access regardless of erms. -Linux kernel tends to choose not "rep movsq" but "rep movsb" with erms. \ No newline at end of file |