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authorAvi Kivity <avi@qumranet.com>2008-01-24 08:13:08 -0500
committerAvi Kivity <avi@qumranet.com>2008-04-27 04:53:17 -0400
commitadb1ff46754a87f3f6c9e7ee0a92f9a8a183bb38 (patch)
tree033c1e021019242d9a47594993cbfaecd62ab540
parentd196e343361c229496adeda42335856da9d057de (diff)
KVM: Limit vcpu mmap size to one page on non-x86
The second page is only needed on archs that support pio. Noted by Carsten Otte. Signed-off-by: Avi Kivity <avi@qumranet.com>
-rw-r--r--virt/kvm/kvm_main.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 121e65cccc58..7972e3aa2cae 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1061,7 +1061,10 @@ static long kvm_dev_ioctl(struct file *filp,
1061 r = -EINVAL; 1061 r = -EINVAL;
1062 if (arg) 1062 if (arg)
1063 goto out; 1063 goto out;
1064 r = 2 * PAGE_SIZE; 1064 r = PAGE_SIZE; /* struct kvm_run */
1065#ifdef CONFIG_X86
1066 r += PAGE_SIZE; /* pio data page */
1067#endif
1065 break; 1068 break;
1066 default: 1069 default:
1067 return kvm_arch_dev_ioctl(filp, ioctl, arg); 1070 return kvm_arch_dev_ioctl(filp, ioctl, arg);