PATCH: Fix an memory attribute issue. We should ensure Qemu and Guest use same attribute for accessing the VGA ram, otherwise, host may hang. Signed-off-by: Xiantao Zhang <[EMAIL PROTECTED]>
diff -r a6b1be5a83de xen/arch/ia64/vmx/vtlb.c
--- a/xen/arch/ia64/vmx/vtlb.c Wed Oct 29 11:02:23 2008 +0900
+++ b/xen/arch/ia64/vmx/vtlb.c Wed Oct 29 16:14:34 2008 +0800
@@ -522,7 +522,7 @@
* which is required by vga acceleration since qemu maps shared
* vram buffer with WB.
*/
- if (mfn_valid(maddr >> PAGE_SHIFT) && phy_pte.ma == VA_MATTR_NATPAGE)
+ if (mfn_valid(maddr >> PAGE_SHIFT) && phy_pte.ma != VA_MATTR_NATPAGE)
phy_pte.ma = VA_MATTR_WB;
maddr = ((maddr & _PAGE_PPN_MASK) & PAGE_MASK) | (paddr & ~PAGE_MASK);
mem_attr_fix.patch
Description: mem_attr_fix.patch
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