Isaku Yamahata wrote: > On Wed, Oct 29, 2008 at 04:10:50PM +0800, Zhang, Jingke wrote: >> Hi all, >> There is one new regression in Cset#18691. With latest >> Cset#18694, all the case can pass! >> >> One regression between Cset#18688 and Cset#18691: >> ============== >> 1. Qemu graphic mode display abnormally while booting >> VTI_Windows and Linux-Xwin. This issue existed in either >> sdl=1 or vnc=1 mode. And this issue does not exist with Cset#18688. > > Hmm, I suspect the change set 18689:7ad8c47f5c4b. But I'm not sure. Hi, Isaku We found the cause,maybe rootcause. 18669 may has a poetentail issue, but doesn't lead to the issue. We found valid_mfn() doesn't work in its way, and seems it is buggy. I have no enough time to debug it, but the following patch should fix the current issue.
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 Thu Oct 30 13:47:08 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 (!(maddr >> 61) && phy_pte.ma == VA_MATTR_NATPAGE) phy_pte.ma = VA_MATTR_WB; maddr = ((maddr & _PAGE_PPN_MASK) & PAGE_MASK) | (paddr & ~PAGE_MASK); Xiantao _______________________________________________ Xen-ia64-devel mailing list Xenfirstname.lastname@example.org http://lists.xensource.com/xen-ia64-devel