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KVM: Allocate guest memory as MAP_PRIVATE, not MAP_SHARED

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

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2008-08-26 17:22:47 +03:00
parent abb9e0b8e3
commit acee3c04e8
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/x86.c
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@ -4296,7 +4296,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
userspace_addr = do_mmap(NULL, 0, userspace_addr = do_mmap(NULL, 0,
npages * PAGE_SIZE, npages * PAGE_SIZE,
PROT_READ | PROT_WRITE, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, MAP_PRIVATE | MAP_ANONYMOUS,
0); 0);
up_write(&current->mm->mmap_sem); up_write(&current->mm->mmap_sem);