From d657c7335b97d746aa6123c56504b46c20e37df3 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@qumranet.com>
Date: Tue, 26 Aug 2008 17:31:31 +0300
Subject: [PATCH] KVM: Don't call get_user_pages(.force = 1)
This is esoteric and only needed to break COW on MAP_SHARED mappings. Since
KVM no longer does these sorts of mappings, breaking COW on them is no longer
necessary.
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
virt/kvm/kvm_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0309571fcb20..de3b029f6adf 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -734,7 +734,7 @@ pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn)
return page_to_pfn(bad_page);
}
- npages = get_user_pages(current, current->mm, addr, 1, 1, 1, page,
+ npages = get_user_pages(current, current->mm, addr, 1, 1, 0, page,
NULL);
if (unlikely(npages != 1)) {
--
GitLab