On 11/03/2016 14:40, Borislav Petkov wrote: > On Fri, Mar 11, 2016 at 01:23:56PM +0000, One Thousand Gnomes wrote: >> > Pentium Pro has MTRR, PAT came later. > Yep, this page says so too: > > http://www.cpu-world.com/CPUs/Pentium-II/Intel-Pentium%20Pro%20200%201%20MB%20-%20GJ80521EX200%201M%20%28BP80521200%201M%29.html > >> > I believe the qemu32 CPU isn't a "real" CPU type therefore. > And why is that so? I suspect it has again something to do with > migration and fun. Let me add the kvm ML. > > Guys, does anyone have an idea why > > #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \ > CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \ > CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \ > CPUID_PAE | CPUID_SEP | CPUID_APIC) > > has CPUID_PAT *instead* of CPUID_MTRR? Somebody got it wrong 10-ish years ago, and nobody has ever checked since. But, don't use qemu32 or qemu64. Use kvm32 and kvm64, or better something like the host you run on ("-cpu Nehalem", "-cpu SandyBridge", "-cpu Haswell-noTSX" etc.). I really, really should fix those defaults... Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
