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Re: [Xen-devel] [PATCH 3/3] xen: Don't register GSI in pre-setup
| To: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 3/3] xen: Don't register GSI in pre-setup |
| From: | Bastian Blank <waldi@xxxxxxxxxx> |
| Date: | Wed, 24 Mar 2010 23:54:01 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 24 Mar 2010 15:55:27 -0700 |
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On Wed, Mar 24, 2010 at 10:54:27AM -0700, Jeremy Fitzhardinge wrote:
> On 03/24/2010 04:54 AM, Bastian Blank wrote:
>> Xen behaves the same way that native Linux, it only allows any IO-APIC
>> pin to be setup once. Therefor we must not set it up in the initial run
>> over all legacy interrupts.
> Do you need both this patch and the Xen one to solve your problem, or is
> one or the other sufficient?
Both are needed.
> Is there any dependency between the Linux and Xen patches? (Doesn't
> look like it to me, but I just want to be sure.)
Nope. Thats why the hypervisor patch returns EEXISTS instead of EBUSY.
The later causes a BUG in current kernels, which is emited before the
real console is setup and breaks the system.
Bastian
--
A Vulcan can no sooner be disloyal than he can exist without breathing.
-- Kirk, "The Menagerie", stardate 3012.4
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