KVM: MMU: Update shadow ptes on partial guest pte writes

[linux-2.6-omap-h63xx.git] / arch / x86 / kvm / paging_tmpl.h

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index ecc0856268c47c8c7a5c5773ac0d239d37dbc58e..c2fd2b96144f18e134f3bc15b017727d300f21e0 100644 (file)
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -243,8 +243,7 @@ err:
 }
 
 static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page,
-                             u64 *spte, const void *pte, int bytes,
-                             int offset_in_pte)
+                             u64 *spte, const void *pte)
 {
        pt_element_t gpte;
        unsigned pte_access;
@@ -252,12 +251,10 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page,
 
        gpte = *(const pt_element_t *)pte;
        if (~gpte & (PT_PRESENT_MASK | PT_ACCESSED_MASK)) {
-               if (!offset_in_pte && !is_present_pte(gpte))
+               if (!is_present_pte(gpte))
                        set_shadow_pte(spte, shadow_notrap_nonpresent_pte);
                return;
        }
-       if (bytes < sizeof(pt_element_t))
-               return;
        pgprintk("%s: gpte %llx spte %p\n", __FUNCTION__, (u64)gpte, spte);
        pte_access = page->role.access & FNAME(gpte_access)(vcpu, gpte);
        if (gpte_to_gfn(gpte) != vcpu->arch.update_pte.gfn)