[Qemu-devel] [PATCH v3 1/8] pc: acpi: fix WindowsXP BSOD when memory hotplug is enabled

[Igor Mammedov]

ACPI parser in XP considers PNP0A06 devices of CPU and
memory hotplug as duplicates. Adding unique _UID
to CPU hotplug device fixes BSOD.

Signed-off-by: Igor Mammedov <address@hidden>
---
 hw/i386/acpi-dsdt-cpu-hotplug.dsl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/i386/acpi-dsdt-cpu-hotplug.dsl 
b/hw/i386/acpi-dsdt-cpu-hotplug.dsl
index 34aab5a..268d870 100644
--- a/hw/i386/acpi-dsdt-cpu-hotplug.dsl
+++ b/hw/i386/acpi-dsdt-cpu-hotplug.dsl
@@ -94,6 +94,7 @@ Scope(\_SB) {
 
     Device(CPU_HOTPLUG_RESOURCE_DEVICE) {
         Name(_HID, EisaId("PNP0A06"))
+        Name(_UID, "CPU hotplug resources")
 
         Name(_CRS, ResourceTemplate() {
             IO(Decode16, CPU_STATUS_BASE, CPU_STATUS_BASE, 0, CPU_STATUS_LEN)
-- 
1.8.3.1