On Tue, Dec 07, 2010, Avi Kivity wrote about "Re: KVM call minutes for Nov 30":
>...
> All it requires is a
> kvm_set_cr3() which will load the PDPTEs into the PDPTRs if PAE is
> enabled. You may need to order the loading of CR0, CR3, CR4, and EFER
> to achieve the desired effect.
I did this more explicitly as:
vmcs_writel(GUEST_CR3, get_vmcs12_fields(vcpu)->guest_cr3);
vcpu->arch.cr3 = get_vmcs12_fields(vcpu)->guest_cr3;
load_pdptrs(vcpu, vcpu->arch.walk_mmu, vcpu->arch.cr3);
vmcs_write64(GUEST_PDPTR0, vcpu->arch.mmu.pdptrs[0]);
vmcs_write64(GUEST_PDPTR1, vcpu->arch.mmu.pdptrs[1]);
vmcs_write64(GUEST_PDPTR2, vcpu->arch.mmu.pdptrs[2]);
vmcs_write64(GUEST_PDPTR3, vcpu->arch.mmu.pdptrs[3]);
I'm still working on trying to simplify this code - I'll indeed try to see if
I can use kvm_set_cr3 instead. Thanks for the suggestion.
However, Even if it works, I have a concern on how nested vmx might brake in
the future if kvm_set_cr3 is changed in some way that is irrelevant to nested.
Nadav.
--
Nadav Har'El | Tuesday, Dec 7 2010, 30 Kislev 5771
n...@math.technion.ac.il |-----------------------------------------
Phone +972-523-790466, ICQ 13349191 |We could wipe out world hunger if we knew
http://nadav.harel.org.il |how to make AOL's Free CD's edible!
--
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
