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KVM: MMU: Use __set_spte to link shadow pages

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To avoid split accesses to 64 bit sptes on i386, use __set_spte() to link
shadow pages together.

(not technically required since shadow pages are __GFP_KERNEL, so upper 32
bits are always clear)

Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Avi Kivity 2010-07-13 14:27:05 +03:00
parent 32ef26a359
commit 121eee97a7
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/mmu.c
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@ -1489,7 +1489,7 @@ static void link_shadow_page(u64 *sptep, struct kvm_mmu_page *sp)
spte = __pa(sp->spt) spte = __pa(sp->spt)
| PT_PRESENT_MASK | PT_ACCESSED_MASK | PT_PRESENT_MASK | PT_ACCESSED_MASK
| PT_WRITABLE_MASK | PT_USER_MASK; | PT_WRITABLE_MASK | PT_USER_MASK;
*sptep = spte; __set_spte(sptep, spte);
} }
static void kvm_mmu_page_unlink_children(struct kvm *kvm, static void kvm_mmu_page_unlink_children(struct kvm *kvm,