From: Avi Kivity <avi@qumranet.com>
Date: Sun, 21 Oct 2007 09:03:36 +0000 (+0200)
Subject: KVM: Add a might_sleep() annotation to gfn_to_page()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=60395224d94945544f1f9dce5566981844bf0e77;p=linux-beck.git

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>
---

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) {