From patchwork Wed Jun 16 17:33:15 2010
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Subject: Q35 qemu repository?
From: Matthew Garrett <mjg59@srcf.ucam.org>
X-Patchwork-Id: 55916
Message-Id: <20100616173315.GA29928@srcf.ucam.org>
To: Isaku Yamahata <yamahata@valinux.co.jp>
Cc: qemu-devel@nongnu.org
Date: Wed, 16 Jun 2010 18:33:15 +0100

On Wed, Jun 16, 2010 at 04:42:10PM +0100, Matthew Garrett wrote:

> Thanks for this - however, Vista gives me an ACPI error on boot (stop 
> 0x000000a5, 0x0000000d, which indicates that there's a malformed or 
> undefined ACPI device). I don't suppose you have any idea what the 
> problem here may be? Linux boots without complaint.

Fixed with the following patch. Any devices with duplicate _HIDs require 
_UIDs.

diff --git a/src/q35-acpi-dsdt.dsl b/src/q35-acpi-dsdt.dsl
index ad05c7a..4697527 100644
--- a/src/q35-acpi-dsdt.dsl
+++ b/src/q35-acpi-dsdt.dsl
@@ -45,6 +45,7 @@ DefinitionBlock (
         Device (DBG0)
         {
             Name(_HID, EISAID("PNP0C02"))
+            Name(_UID, 0)
             Name(_CRS, ResourceTemplate() {
                 IO (Decode16, 0xb080, 0xb080, 0x00, 0x04)
             })
@@ -71,6 +72,7 @@ DefinitionBlock (
         Device(HP0)
         {
             Name(_HID, EISAID("PNP0C02"))
+            Name(_UID, 0x01)
             Name(_CRS, ResourceTemplate() {
                 IO (Decode16, 0xae00, 0xae00, 0x00, 0x0C)
                 IO (Decode16, 0xae0c, 0xae0c, 0x00, 0x01)