Commit 121eee97 authored Jul 13, 2010 by Avi Kivity

KVM: MMU: Use __set_spte to link shadow pages



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>

parent 32ef26a3

arch/x86/kvm/mmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1489,7 +1489,7 @@ static void link_shadow_page(u64 sptep, struct kvm_mmu_page sp)
		spte = __pa(sp->spt)
		\| PT_PRESENT_MASK \| PT_ACCESSED_MASK
		\| PT_WRITABLE_MASK \| PT_USER_MASK;
		*sptep = spte;
		__set_spte(sptep, spte);
		}

		static void kvm_mmu_page_unlink_children(struct kvm *kvm,