From f897f01e79c99ec8577ed6bb6c9bec845747dc3c Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Thu, 6 Aug 2009 14:39:44 -0300 Subject: [PATCH] KVM: Allocate guest memory as MAP_PRIVATE, not MAP_SHARED (cherry picked from commit acee3c04e8208c17aad1baff99baa68d71640a19) There is no reason to share internal memory slots with fork()ed instances. Signed-off-by: Avi Kivity Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a29b440b3c24..8d45d35f8aad 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4003,7 +4003,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm, userspace_addr = do_mmap(NULL, 0, npages * PAGE_SIZE, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_ANONYMOUS, + MAP_PRIVATE | MAP_ANONYMOUS, 0); up_write(¤t->mm->mmap_sem); -- 2.39.2