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RE: [Xen-devel] [PATCH][HVM] Reserve MMIO a0000-c0000 in ACPI dsdt
| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "He, Qing" <qing.he@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH][HVM] Reserve MMIO a0000-c0000 in ACPI dsdt |
| From: | "Li, Xin B" <xin.b.li@xxxxxxxxx> |
| Date: | Thu, 16 Nov 2006 16:25:06 +0800 |
| Delivery-date: | Thu, 16 Nov 2006 00:25:34 -0800 |
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| Thread-index: | AccJVEia0ITdNry3QYOe7vloaQNKigAAhXfGAACNWcA= |
| Thread-topic: | [Xen-devel] [PATCH][HVM] Reserve MMIO a0000-c0000 in ACPI dsdt |
> >> This patch reserves MMIO 0xa0000 to 0xc0000 in ACPI dsdt, it avoids >> possible vga driver loading problem in HVM Windows guest. >> Also fixes a Makefile bug in hvmloader directory. > >Is this *actually* a problem? I didn't think BIOS tables had to report >0xA0000-0xBFFFF as special. Certainly e820 and EFI reporting mechanisms >should ignore it as the hole is a well-defined part of the PC >memory layout. >Also OSes don't treat or probe for standard vga as a pci device. > without this fix, 32bit Vista boots ok, but 64bit Vista can not load vga driver. -Xin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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