From: Avi Kivity <avi@redhat.com>
Date: Sun, 24 May 2009 19:15:25 +0000 (+0300)
Subject: KVM: Make paravirt tlb flush also reload the PAE PDPTRs
X-Git-Tag: v3.12-rc1~14507^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a8cd0244e9cebcf9b358d24c7e7410062f3665cb;p=kernel%2Fkernel-generic.git

KVM: Make paravirt tlb flush also reload the PAE PDPTRs

The paravirt tlb flush may be used not only to flush TLBs, but also
to reload the four page-directory-pointer-table entries, as it is used
as a replacement for reloading CR3.  Change the code to do the entire
CR3 reloading dance instead of simply flushing the TLB.

Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b6caf13..32cf11e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2897,8 +2897,7 @@ static int kvm_pv_mmu_write(struct kvm_vcpu *vcpu,
 
 static int kvm_pv_mmu_flush_tlb(struct kvm_vcpu *vcpu)
 {
-	kvm_x86_ops->tlb_flush(vcpu);
-	set_bit(KVM_REQ_MMU_SYNC, &vcpu->requests);
+	kvm_set_cr3(vcpu, vcpu->arch.cr3);
 	return 1;
 }