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Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api |
Date: |
Thu, 21 May 2009 13:50:10 +0300 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Thu, May 21, 2009 at 11:34:11AM +0100, Paul Brook wrote:
> > The PCI bus doesn't need any special support (I think) but something on
> > the other end needs to interpret those writes.
>
> Sure. But there's definitely nothing PCI specific about it. I assumed this
> would all be contained within the APIC.
Exactly. APIC supplies callbacks to set up/free/mask/unmask MSI interrupts.
For kvm, we'll have another implementation that passes these requests
on to kernel.
> > In any case we need some internal API for this, and qemu_irq looks like
> > a good choice.
>
> What do you expect to be using this API?
>
> Paul
emulated PCI devices such as virtio.
Hope to send a patch shortly.
--
MST
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, (continued)
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Michael S. Tsirkin, 2009/05/20
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Blue Swirl, 2009/05/20
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Michael S. Tsirkin, 2009/05/20
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Blue Swirl, 2009/05/20
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Michael S. Tsirkin, 2009/05/21
Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Avi Kivity, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Avi Kivity, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Avi Kivity, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Michael S. Tsirkin, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Avi Kivity, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Michael S. Tsirkin, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21
- Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api, Paul Brook, 2009/05/21