[patch 2/5] KVM: MMU: make for_each_shadow_entry aware of largepages

Marcelo Tosatti
2009-06-11T15:14:45Z

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This way there is no need to add explicit checks in every
for_each_shadow_entry user.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Index: kvm/arch/x86/kvm/mmu.c
===================================================================
--- kvm.orig/arch/x86/kvm/mmu.c
+++ kvm/arch/x86/kvm/mmu.c
@@ -1273,6 +1273,11 @@ static bool shadow_walk_okay(struct kvm_
{
if (iterator->level < PT_PAGE_TABLE_LEVEL)
return false;
+
+ if (iterator->level == PT_PAGE_TABLE_LEVEL)
+ if (is_large_pte(*iterator->sptep))
+ return false;
+
iterator->index = SHADOW_PT_INDEX(iterator->addr, iterator->level);
iterator->sptep = ((u64 *)__va(iterator->shadow_addr)) + iterator->index;
return true;

--