2016-01-07 09:27-0800, Andy Lutomirski: > On Thu, Jan 7, 2016 at 7:18 AM, Radim Krcmar <rkrcmar@xxxxxxxxxx> wrote: > > 2016-01-07 00:41-0800, Andy Lutomirski: >>> This still doesn't explain why even explicitly trying to set invtsc >>> doesn't seem to work. >> >> Seems like a bug. Mine cpuid is >> 0x80000007 0x00: eax=0x00000000 ebx=0x00000000 ecx=0x00000000 edx=0x00000100 >> and QEMU says >> warning: host doesn't support requested feature: CPUID.80000007H:EDX.invtsc [bit 8] >> >> I'll see if it's in KVM or QEMU. (We should only forbid migrations to >> hosts with different frequency and without guest TSC scaling.) > > If I do -cpu host,migratable=off,+invtsc, then it works. Maybe QEMU > is just being too strict. This is Skylake. It does, thanks. It's mainly a misleading warning then; stripping flags at the beginning instead of denying migration later on makes some sense. -- 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
