KVM: Add a might_sleep() annotation to gfn_to_page()

This will help trap accesses to guest memory in atomic context.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index a6e3165043d1..453e98e251da 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -993,6 +993,8 @@ struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
         struct page *page[1];
         int npages;
 
+        might_sleep();
+
         gfn = unalias_gfn(kvm, gfn);
         slot = __gfn_to_memslot(kvm, gfn);
         if (!slot) {