ia64/xen-unstable
changeset 18690:c19871b66cea
[IA64] fix to translate_phy_pte()
mfn_valid makes sure whether the pfn in question is a normal page.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
mfn_valid makes sure whether the pfn in question is a normal page.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
author | Isaku Yamahata <yamahata@valinux.co.jp> |
---|---|
date | Fri Oct 24 11:47:29 2008 +0900 (2008-10-24) |
parents | 7ad8c47f5c4b |
children | b0426fc080f3 |
files | xen/arch/ia64/vmx/vtlb.c |
line diff
1.1 --- a/xen/arch/ia64/vmx/vtlb.c Fri Oct 24 11:38:09 2008 +0900 1.2 +++ b/xen/arch/ia64/vmx/vtlb.c Fri Oct 24 11:47:29 2008 +0900 1.3 @@ -522,7 +522,7 @@ static u64 translate_phy_pte(VCPU *v, u6 1.4 * which is required by vga acceleration since qemu maps shared 1.5 * vram buffer with WB. 1.6 */ 1.7 - if (phy_pte.ma != VA_MATTR_NATPAGE) 1.8 + if (mfn_valid(maddr >> PAGE_SHIFT) && phy_pte.ma == VA_MATTR_NATPAGE) 1.9 phy_pte.ma = VA_MATTR_WB; 1.10 1.11 maddr = ((maddr & _PAGE_PPN_MASK) & PAGE_MASK) | (paddr & ~PAGE_MASK);