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

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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