Oh, my bad. Thank you for debugging.
I applied and pushed out.
Does this fixed the issue you repoted?

thanks,

On Fri, Nov 07, 2008 at 10:42:57AM +0800, Zhang, Xiantao wrote:
> PATCH : Fix vti guests broken issue. 
> mfn_valid should use machine physical pfn, not guest physical pfn. 
> 
> Sign-off-by: Xiantao Zhang <[EMAIL PROTECTED]>
> 
> 
> diff -r f6795589ef82 xen/arch/ia64/vmx/vtlb.c
> --- a/xen/arch/ia64/vmx/vtlb.c        Thu Nov 06 12:14:57 2008 +0900
> +++ b/xen/arch/ia64/vmx/vtlb.c        Fri Nov 07 10:35:11 2008 +0800
> @@ -522,7 +522,7 @@ static u64 translate_phy_pte(VCPU *v, u6
>       * which is required by vga acceleration since qemu maps shared
>       * vram buffer with WB.
>       */
> -    if (mfn_valid(pte_pfn(__pte(pte))) && phy_pte.ma != VA_MATTR_NATPAGE)
> +    if (mfn_valid(pte_pfn(__pte(maddr))) && phy_pte.ma != VA_MATTR_NATPAGE)
>          phy_pte.ma = VA_MATTR_WB;
>  
>      maddr = ((maddr & _PAGE_PPN_MASK) & PAGE_MASK) | (paddr & ~PAGE_MASK);

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-- 
yamahata

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