On 10/18/2012 11:35 AM, Gleb Natapov wrote: > You misunderstood the description. V_INTR_MASKING=1 means that CR8 writes > are not propagated to real HW APIC. > > But KVM does not trap access to CR8 unconditionally. It enables CR8 > intercept only when there is pending interrupt in IRR that cannot be > immediately delivered due to current TPR value. This should eliminate 99% > of CR8 intercepts. >
Right. You will need to expose the alternate encoding of cr8 (IIRC lock mov reg, cr0) on AMD via cpuid, but otherwise it should just work. Be aware that this will break cross-vendor migration. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
