On 02/25/2015 02:26 PM, Radim Krčmář wrote:
> 2015-02-24 15:25-0600, Joel Schopp:
- clr_cr_intercept(svm, INTERCEPT_CR0_WRITE);
} else {
set_cr_intercept(svm, INTERCEPT_CR0_READ);
>>> (There is no point in checking fpu_active if cr0s are equal.)
>>>
-
2015-02-24 15:25-0600, Joel Schopp:
>
> >> - clr_cr_intercept(svm, INTERCEPT_CR0_WRITE);
> >>} else {
> >>set_cr_intercept(svm, INTERCEPT_CR0_READ);
> > (There is no point in checking fpu_active if cr0s are equal.)
> >
> >> - set_cr_intercept(svm, INTERCEPT_CR0_WR
>> -clr_cr_intercept(svm, INTERCEPT_CR0_WRITE);
>> } else {
>> set_cr_intercept(svm, INTERCEPT_CR0_READ);
> (There is no point in checking fpu_active if cr0s are equal.)
>
>> -set_cr_intercept(svm, INTERCEPT_CR0_WRITE);
> KVM uses lazy FPU and the state is
2015-02-20 16:44-0600, Joel Schopp:
> From: David Kaplan
>
> Reduce the number of exits by avoiding exiting when the guest writes TS or MP
> bits of CR0. INTERCEPT_CR0_WRITE intercepts all writes to CR0 including TS
> and
> MP bits. It intercepts these even if INTERCEPT_SELECTIVE_CR0 is set. W
