X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fkvm%2Fmmu.c;h=9628091c574d06f3f9dd0c8ce49db662797a0fa9;hb=6597ca09e6c0e5aec7ffd2b8ab48c671d3c28414;hp=36c5406b1813d4a5c3a52faff20b64a16e5ee54f;hpb=a8f43ee7e108cecf68cac652d0a3aeedb8131220;p=linux-2.6-omap-h63xx.git

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 36c5406b181..9628091c574 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -640,6 +640,7 @@ static void rmap_write_protect(struct kvm *kvm, u64 gfn)
 			rmap_remove(kvm, spte);
 			--kvm->stat.lpages;
 			set_shadow_pte(spte, shadow_trap_nonpresent_pte);
+			spte = NULL;
 			write_protected = 1;
 		}
 		spte = rmap_next(kvm, rmapp, spte);
@@ -658,7 +659,7 @@ static int is_empty_shadow_page(u64 *spt)
 	u64 *end;
 
 	for (pos = spt, end = pos + PAGE_SIZE / sizeof(u64); pos != end; pos++)
-		if (*pos != shadow_trap_nonpresent_pte) {
+		if (is_shadow_present_pte(*pos)) {
 			printk(KERN_ERR "%s: %p %llx\n", __func__,
 			       pos, *pos);
 			return 0;
@@ -1858,6 +1859,7 @@ static void free_mmu_pages(struct kvm_vcpu *vcpu)
 		sp = container_of(vcpu->kvm->arch.active_mmu_pages.next,
 				  struct kvm_mmu_page, link);
 		kvm_mmu_zap_page(vcpu->kvm, sp);
+		cond_resched();
 	}
 	free_page((unsigned long)vcpu->arch.mmu.pae_root);
 }
@@ -1996,7 +1998,7 @@ static struct shrinker mmu_shrinker = {
 	.seeks = DEFAULT_SEEKS * 10,
 };
 
-void mmu_destroy_caches(void)
+static void mmu_destroy_caches(void)
 {
 	if (pte_chain_cache)
 		kmem_cache_destroy(pte_chain_cache);