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[Xen-devel] [Patch] Remove a panic condition in enabling x2APIC

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: [Xen-devel] [Patch] Remove a panic condition in enabling x2APIC
From: "Han, Weidong" <weidong.han@xxxxxxxxx>
Date: Fri, 12 Nov 2010 16:44:36 +0800
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Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
Delivery-date: Fri, 12 Nov 2010 00:45:28 -0800
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Thread-topic: [Xen-devel] [Patch] Remove a panic condition in enabling x2APIC
Currently Xen triggers a panic if user disables VT-d by command line while not 
disable x2APIC. This requires users to specify both "iommu=0" and "x2apic=0" to 
disable VT-d if the platform supports x2APIC. It's not user friendly. This 
patch removes the panic condition. That's to say, don't require user to specify 
"x2apic=0" when specify "iommu=0". As long as VT-d is not enabled (disabled in 
BIOS or in command line), x2APIC won't be enabled naturally (x2APIC depends on 
VT-d Interrupt remapping). 

Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>

Attachment: remove-panic.patch
Description: remove-panic.patch

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