lkml.org 
[lkml]   [2016]   [Mar]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PART1 RFC v2 09/10] svm: Do not intercept CR8 when enable AVIC
From
Date
Hi

On 03/07/2016 10:39 PM, Paolo Bonzini wrote:
>> + svm_x86_ops.update_cr8_intercept = NULL;
>> > } else {
>> > svm_x86_ops.deliver_posted_interrupt = NULL;
>> > }
>> >@@ -1116,7 +1119,8 @@ static void init_vmcb(struct vcpu_svm *svm)
>> > set_cr_intercept(svm, INTERCEPT_CR0_WRITE);
>> > set_cr_intercept(svm, INTERCEPT_CR3_WRITE);
>> > set_cr_intercept(svm, INTERCEPT_CR4_WRITE);
>> >- set_cr_intercept(svm, INTERCEPT_CR8_WRITE);
>> >+ if (!avic)
> Remember that AVIC enabled/disabled must be refreshed when the
> .refresh_apicv_exec_ctrl callback is invoked, so it is not enough to use
> the global variable.
>
> Paolo
>

Good point. I'll fix this. By the way, how can we enable APICv only in
certain VM? Does Qemu/KVM have any specific flags that we can pass to
enable/disable this?

Thanks,
Suravee

\
 
 \ /
  Last update: 2016-03-14 07:41    [W:0.093 / U:0.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site