Re: [Xen-devel] [PATCH, resend] replacement for noirqdebug hack

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 2 Jun 2006, at 11:02, Jan Beulich wrote:

> Instead of re-establishing the noirqdebug hack earlier present in the 
> i386 Linux code, communicate the information about
> whether a particular IRQ is shared across domains from hypervisor to 
> kernel.
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
How about the following patch, which is a cleaner modification to Linux 
and does not affect shared_info layout? Note that it depends on a Xen 
patch that is currently in the staging tree (extends the irq info 
hypercall to inform about sharing status), and that the patch is 
against xen-unstable. The status check is much slower than reading from 
shared memory, but ought to be on a rare path (unless you have a 
high-rate interrupt line shared across guests, which is going to be 
rather suckful anyway).
 -- Keir

Attachment: ignore_shared_irqs.patch
Description: Binary data

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