From: Avi Kivity <[email protected]> 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 <[email protected]> Signed-off-by: Avi Kivity <[email protected]> Signed-off-by: Marcelo Tosatti <[email protected]> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index ae35853..75cfb79 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -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, -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
