On 15/05/2018 18:17, Jim Mattson wrote:
> Hi Paolo,
>
> Does it look something like this?
>
> if ((msr_info->data & reserved_bits) || new_mode == LAPIC_MODE_INVALID)
> return 1;
> if (!msr_info->host_initiated) {
> if (old_mode == LAPIC_MODE_X2APIC &&
> new_mode == LAPIC_MODE_XAPIC)
> return 1;
> if (old_mode == LAPIC_MODE_DISABLED &&
> new_mode == LAPIC_MODE_X2APIC)
> return 1;
> }
Yes, entirely. You can check here:
https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?h=next&id=588716494258899389206fa50426e78cc9df89b9
(look at all those digits at the beginning of the commit SHA1).
Paolo
