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Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of use
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors |
Date: |
Fri, 21 Oct 2011 09:54:27 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Oct 21, 2011 at 09:09:10AM +0200, Jan Kiszka wrote:
> On 2011-10-21 00:02, Michael S. Tsirkin wrote:
> >>> Yes. But this still makes an API for acquiring per-vector resources a
> >>> requirement.
> >>
> >> Yes, but a different one than current use/unuse.
> >
> > What's wrong with use/unuse as an API? It's already in place
> > and virtio calls it.
>
> Not for that purpose.
> It remains a useless API in the absence of KVM's
> requirements.
>
Sorry, I don't understand. This can acquire whatever resources
necessary. It does not seem to make sense to rip it out
only to add a different one back in.
> >
> >> And it will be an
> >> optional one, only for those devices that need to establish irq/eventfd
> >> channels.
> >>
> >> Jan
> >
> > Not sure this should be up to the device.
>
> The device provides the fd. At least it acquires and associates it.
>
> Jan
It would surely be beneficial to be able to have a uniform
API so that devices don't need to be recoded to be moved
in this way.
> --
> Siemens AG, Corporate Technology, CT T DE IT 1
> Corporate Competence Center Embedded Linux
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, (continued)
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/19
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/19
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/19
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/20
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/21
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/21
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Michael S. Tsirkin, 2011/10/21
- Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking of used vectors, Jan Kiszka, 2011/10/18
[Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Jan Kiszka, 2011/10/17
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Michael S. Tsirkin, 2011/10/17
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Jan Kiszka, 2011/10/17
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Michael S. Tsirkin, 2011/10/17
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Michael S. Tsirkin, 2011/10/18
- Re: [Qemu-devel] [RFC][PATCH 42/45] msix: Introduce msix_init_simple, Jan Kiszka, 2011/10/18