Re: [PATCH 4/9] KVM: define kvm_bad_pfn statically

[Marcelo Tosatti]

On Sun, Jul 29, 2012 at 04:14:25PM +0800, Xiao Guangrong wrote:
> Then, remove get_bad_pfn
> 
> Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
> ---
>  include/linux/kvm_host.h |    1 +
>  virt/kvm/kvm_main.c      |    7 +------
>  2 files changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 4de56cd..b02203f 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -50,6 +50,7 @@
> 
>  #define kvm_fault_pfn		(-EFAULT)
>  #define kvm_hwpoison_pfn	(-EHWPOISON)
> +#define kvm_bad_pfn		(-ENOENT)

Remind me what is the guarantee that -Exxx does not clash with
a valid pfn number?

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