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RE: [Xen-devel] [PATCH] Fix dom0 boot issue with VT-d enabled

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] Fix dom0 boot issue with VT-d enabled
From: "Han, Weidong" <weidong.han@xxxxxxxxx>
Date: Tue, 22 Apr 2008 17:00:37 +0800
Cc: "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
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Thread-topic: [Xen-devel] [PATCH] Fix dom0 boot issue with VT-d enabled
Okay. I will resend the patch later.

Randy (Weidong)

Keir Fraser wrote:
> On 22/4/08 06:56, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:
>> c/s 17487 put iommu_setup() in __initcall(), this makes
>> iommu_setup() be called before dom0 creation. Because iommu_setup()
>> will do something for dom0 such as map 1:1 page table, while dom0 is
>> NULL, reboot happens during dom0 booting. This patch moves
>> iommu_setup() behind dom0 creation.
> The code for system and domain initialisation of iommu state is a
> disgraceful mess. The former should be done early, before domains
> (including dom0) are created. If you have stuff to do for dom0, do it
> when dom0 is created. You get a call into your code at that point.
>  -- Keir

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