From 365fb3fdf6769d3553999d8eb6cc2a8c56c747c1 Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Sat, 28 Aug 2010 19:24:13 +0800 Subject: KVM: MMU: rewrite audit_mappings_page() function There is a bugs in this function, we call gfn_to_pfn() and kvm_mmu_gva_to_gpa_read() in atomic context(kvm_mmu_audit() is called under the spinlock(mmu_lock)'s protection). This patch fix it by: - introduce gfn_to_pfn_atomic instead of gfn_to_pfn - get the mapping gfn from kvm_mmu_page_get_gfn() And it adds 'notrap' ptes check in unsync/direct sps Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b837ec80885d..f2ecdd52032b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -300,6 +300,7 @@ void kvm_set_page_dirty(struct page *page); void kvm_set_page_accessed(struct page *page); pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); +pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); pfn_t gfn_to_pfn_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn); -- cgit v1.2.3