commit acee3c04e8208c17aad1baff99baa68d71640a19
author Avi Kivity <avi@qumranet.com> Tue Aug 26 17:22:47 2008 +0300
committer Avi Kivity <avi@qumranet.com> Wed Oct 15 10:15:23 2008 +0200
tree 2dd9ef2697686319ae0b92f1ffe674530493709b
parent abb9e0b8e33e58ac8e04e03b680c46435bc312fd

KVM: Allocate guest memory as MAP_PRIVATE, not MAP_SHARED

There is no reason to share internal memory slots with fork()ed instances.

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

arch/x86/kvm/x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index bfc7c33..675d010 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4296,7 +4296,7 @@
 			userspace_addr = do_mmap(NULL, 0,
 						 npages * PAGE_SIZE,
 						 PROT_READ | PROT_WRITE,
-						 MAP_SHARED | MAP_ANONYMOUS,
+						 MAP_PRIVATE | MAP_ANONYMOUS,
 						 0);
 			up_write(&current->mm->mmap_sem);