KVM: Cache pdptrs

[mirror_ubuntu-artful-kernel.git] / arch / x86 / kvm / mmu.c

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 0ef5bb2b4043af68c70ce46dbe484e3a887f8a21..8ee67e3fb9d0221fc58f35841577f83e14d2e0e7 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -18,6 +18,7 @@
  */
 
 #include "mmu.h"
+#include "kvm_cache_regs.h"
 
 #include <linux/kvm_host.h>
 #include <linux/types.h>
@@ -1954,6 +1955,7 @@ static int mmu_alloc_roots(struct kvm_vcpu *vcpu)
        gfn_t root_gfn;
        struct kvm_mmu_page *sp;
        int direct = 0;
+       u64 pdptr;
 
        root_gfn = vcpu->arch.cr3 >> PAGE_SHIFT;
 
@@ -1981,11 +1983,12 @@ static int mmu_alloc_roots(struct kvm_vcpu *vcpu)
 
                ASSERT(!VALID_PAGE(root));
                if (vcpu->arch.mmu.root_level == PT32E_ROOT_LEVEL) {
-                       if (!is_present_pte(vcpu->arch.pdptrs[i])) {
+                       pdptr = kvm_pdptr_read(vcpu, i);
+                       if (!is_present_pte(pdptr)) {
                                vcpu->arch.mmu.pae_root[i] = 0;
                                continue;
                        }
-                       root_gfn = vcpu->arch.pdptrs[i] >> PAGE_SHIFT;
+                       root_gfn = pdptr >> PAGE_SHIFT;
                } else if (vcpu->arch.mmu.root_level == 0)
                        root_gfn = 0;
                if (mmu_check_root(vcpu, root_gfn))