From: Andrea Arcangeli <[EMAIL PROTECTED]>
With CONFIG_PREEMPT=n, this is needed in order to disable the fault-in
code from sleeping.
Signed-off-by: Andrea Arcangeli <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8fc12dc..dbf5fa7 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -553,7 +553,9 @@ int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void
*data,
addr = gfn_to_hva(kvm, gfn);
if (kvm_is_error_hva(addr))
return -EFAULT;
+ pagefault_disable();
r = __copy_from_user_inatomic(data, (void __user *)addr + offset, len);
+ pagefault_enable();
if (r)
return -EFAULT;
return 0;
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