On 12/11/21 01:10, Thomas Gleixner wrote:
2) When the guest triggers #NM is takes an VMEXIT and the host
does:
rdmsrl(MSR_XFD_ERR, vcpu->arch.guest_fpu.xfd_err);
injects the #NM and goes on.
3) When the guest writes to MSR_XFD_ERR it takes an VMEXIT and
the host does:
vcpu->arch.guest_fpu.xfd_err = msrval;
wrmsrl(MSR_XFD_ERR, msrval);
No wrmsrl here I think, the host value is 0 and should stay so. Instead the wrmsrl will happen the next time the VCPU loop is entred.
Paolo
