Messages in this thread Patch in this message | | | From | Avi Kivity <> | Subject | [PATCH 12/40] KVM: Limit vcpu mmap size to one page on non-x86 | Date | Mon, 31 Mar 2008 17:36:56 +0300 |
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The second page is only needed on archs that support pio.
Noted by Carsten Otte.
Signed-off-by: Avi Kivity <avi@qumranet.com> --- virt/kvm/kvm_main.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 121e65c..7972e3a 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, r = -EINVAL; if (arg) goto out; - r = 2 * PAGE_SIZE; + r = PAGE_SIZE; /* struct kvm_run */ +#ifdef CONFIG_X86 + r += PAGE_SIZE; /* pio data page */ +#endif break; default: return kvm_arch_dev_ioctl(filp, ioctl, arg); -- 1.5.4.5
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