Just resend. Thanks & Best Regards -Xiantao
OTC,Intel Corporation -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Zhang, Xiantao Sent: 2006年6月1日 16:29 To: Alex Williamson Cc: xen-ia64-devel@lists.xensource.com Subject: RE: [Xen-ia64-devel] [PATCH]Fix domain0 no VGA console bug. Hi Alex, The updated patch should be happy for all platforms. If EFI doesn't provide md for range(0xa0000-0xc0000) to OS. It maybe a hole or occupied by legacy vga. Therefore, I used the efi_mmio function to check it. If these pages was not mapped yet and efi_mmio return true, we can map them as MMIO safely. BTW, this patch based on Yamahata's check memory descriptor overlap patch. Please give comments. :) Thanks -Xiantao > -----Original Message----- > From: Alex Williamson [mailto:[EMAIL PROTECTED] > Sent: 2006年6月1日 10:11 > To: Zhang, Xiantao > Cc: xen-ia64-devel@lists.xensource.com > Subject: RE: [Xen-ia64-devel] [PATCH]Fix domain0 no VGA console bug. > > On Thu, 2006-06-01 at 09:45 +0800, Zhang, Xiantao wrote: > > Hi Alex, > > We are using tiger4 platform. I didn't find md about space: > > 0xa0000-0xc0000 in efi memmap, maybe it was assumed > > EFI_MEMORY_MAPPED_IO in native OS. But dom_fw_init shouldn't neglect > > it to set IO space according to MDs efi provides. Seems your platform > > has VGA console. So this patch can enable VGA console on all platforms > > explicitly, maybe as you said this step is better to do in > > dom_fw_init :) > > Hi Xiantao, > > One of my test systems has VGA, the other does not. We cannot assume > VGA in the system. If the MDT on the tiger4 doesn't describe that > range, then we probably need to at least revert to the test the Linux > kernel uses and test whether that range has a WB memory attribute before > assuming it's VGA. Also, try not to double map the range for platforms > that do describe this as type EFI_MEMORY_MAPPED_IO. Thanks, > > Alex > > -- > Alex Williamson HP Open Source & Linux Org.
xen0_console.patch
Description: xen0_console.patch
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