Hi! > [ Upstream commit c1c35cf78bfab31b8cb455259524395c9e4c7cd6 ] > > If not in long mode, the low bits of CR3 are reserved but not enforced to > be zero, so remove those checks. If in long mode, however, the MBZ bits > extend down to the highest physical address bit of the guest, excluding > the encryption bit. > > Make the checks consistent with the above, and match them between > nested_vmcb_checks and KVM_SET_SREGS.
> +++ b/arch/x86/kvm/x86.c
> @@ -9558,6 +9558,8 @@ static int kvm_valid_sregs(struct kvm_vcpu *vcpu,
> struct kvm_sregs *sregs)
> if (!(sregs->cr4 & X86_CR4_PAE)
> || !(sregs->efer & EFER_LMA))
> return -EINVAL;
> + if (sregs->cr3 & vcpu->arch.cr3_lm_rsvd_bits)
> + return false;
> } else {
Function has different return type between 5.10 and 5.11, so this
needs fixing.
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
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