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Re: [Qemu-devel] virtio-pci msix error
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From: |
Michael S. Tsirkin |
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Subject: |
Re: [Qemu-devel] virtio-pci msix error |
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Date: |
Wed, 20 May 2015 11:58:15 +0200 |
On Tue, May 19, 2015 at 09:11:26PM +0100, Peter Maydell wrote:
> On 19 May 2015 at 20:16, Michael S. Tsirkin <address@hidden> wrote:
> > On Tue, May 19, 2015 at 08:54:36AM -0700, Richard Henderson wrote:
> >> Re patch c7ff5482. What's the point of this error?
> >> It's going to always appear for older targets that
> >> predate such new fangled things as msix.
> >>
> >> Obviously the patch has been there a while, and it's
> >> not actually causing any problems, but today it got
> >> on my nerves...
>
> > So don't specify nvectors > 0 for these platforms then?
>
> How do you do that? I did a quick 'git grep' for nvectors
> and none of the hits are in platform-dependent code...
>
> Why can't the virtio-pci device automatically detect
> whether the PCI bus it's plugged into supports MSIx
> and just do the right thing?
>
> -- PMM
I mean why does *user* specify nvectors > 0?
--
MST