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xen-devel
[Xen-devel] Re: [PATCH] xen: fix interrupt routing
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To: |
Jan Kiszka <jan.kiszka@xxxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH] xen: fix interrupt routing |
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From: |
Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> |
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Date: |
Tue, 14 Jun 2011 14:31:03 +0100 |
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Cc: |
"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, Alexander Graf <agraf@xxxxxxx>, "qemu-devel@xxxxxxxxxx" <qemu-devel@xxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Isaku Yamahata <yamahata@xxxxxxxxxxxxx>, Anthony Liguori <anthony@xxxxxxxxxxxxx>, Stefano |
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Tue, 14 Jun 2011 06:28:18 -0700 |
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<alpine.DEB.2.00.1105261645560.12963@kaball-desktop> <21A10B78-49E2-453B-8AE6-48155E2071B5@xxxxxxx> <alpine.DEB.2.00.1105311123210.12963@kaball-desktop> <68B936C0-E230-4B48-A274-CB875ED92D5E@xxxxxxx> <1308053820.17937.72.camel@xxxxxxxxxxxxxxxxxxxxxx> <1D2C3E16-193F-4EEC-B7EF-AE038B4F2EE9@xxxxxxx> <4DF75D5E.3000003@xxxxxxxxxxx> |
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Alpine 2.00 (DEB 1167 2008-08-23) |
On Tue, 14 Jun 2011, Jan Kiszka wrote:
> I bet the motivation is to have an IRQ route that is independent of
> QEMU, thus can be discovered inside the Xen kernel and then remains
> stable - or is simply hard-wired. Device assignment? Direct legacy IRQ
> injection from the kernel?
>
This code predates me, so Keir might have more insights on the original
motivation, but you are correct, they are hard-wired and can be used for
device-assignment as well.
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