On Fri, 2013-09-27 at 02:31 +0200, Laszlo Ersek wrote:
> Hi Mark,
>
> just my 2 cents:
>
> On 09/26/13 21:33, Mark Salter wrote:
> > I've been trying out this patch series on AArch64 foundation model.
> > I have UEFI booting a linux kernel image in an EFI system partition.
> > But the kernel itself doesn't see the virtio device. If I boot with
> > an UEFI image without virtio support built in, the same kernel does
> > see the virtio disk device.
> >
> > So, could this be a case of the UEFI virtio driver not releasing the
> > virtio device?
>
> Interesting. We'd only know for sure if we debugged into the kernel
> ("drivers/virtio/virtio_mmio.c" more precisely).
Well, the virtio_blk probe fails with error of -ENOENT. I tracked that
down to vm_setup_vq() in virtio_mmio.c:
/* Queue shouldn't already be set up. */
if (readl(vm_dev->base + VIRTIO_MMIO_QUEUE_PFN)) {
err = -ENOENT;
goto error_available;
}
--Mark
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