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

[Marcelo Tosatti]

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

Signed-off-by: Marcelo Tosatti <mtosa...@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;

-- 

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