Re: [PATCH 13/15] KVM: VMX: modify the default value of nontrap shadow pte

Avi Kivity
2011-06-09T07:14:45Z

On 06/07/2011 04:06 PM, Xiao Guangrong wrote:
> Modify the default value to identify nontrap shadow pte and mmio shadow pte
> whill will be introduced in later patch
>
> Signed-off-by: Xiao Guangrong<xiaoguangrong@cn.fujitsu.com>
> ---
> arch/x86/kvm/vmx.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 20dbf7f..8c3d343 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -7110,7 +7110,7 @@ static int __init vmx_init(void)
> kvm_disable_tdp();
>
> if (bypass_guest_pf)
> - kvm_mmu_set_nonpresent_ptes(~0xffeull, 0ull);
> + kvm_mmu_set_nonpresent_ptes(0xfull<< 49 | 1ull, 0ull);
>

This can break on newer processors (well, so can the original, but the
new one will break earlier).

--
error compiling committee.c: too many arguments to function