[OpenBIOS] [PATCH 0/2] Sparc64: virtio-block and interrupt support

Mark Cave-Ayland mark.cave-ayland at ilande.co.uk
Sat May 12 17:15:36 CEST 2012


On 12/05/12 15:14, Artyom Tarasenko wrote:

> On Sat, May 12, 2012 at 3:54 PM, Blue Swirl<blauwirbel at gmail.com>  wrote:
>> On Sat, May 12, 2012 at 1:34 PM, Artyom Tarasenko<atar4qemu at gmail.com>  wrote:
>>> On Sat, May 12, 2012 at 1:42 PM, Blue Swirl<blauwirbel at gmail.com>  wrote:
>>>> Based on Artyom's Sparc64 work (thanks a lot!), I added some minimal
>>>> support for virtio-block and interrupt nodes.
>>>
>>> Hey, that was fast! Does it mean your patches also allow booting from
>>> a virtio device?
>>
>> No, only a warning for the unknown device is avoided and Linux can use
>> the interrupts.
>>
>> Making a simple driver does not look very difficult, here are some examples:
>> http://fxr.watson.org/fxr/source/dev/virtio/block/virtio_blk.c
>> http://fxr.watson.org/fxr/source/drivers/block/virtio_blk.c?v=linux-2.6
>> http://git.qemu.org/?p=seabios.git;a=blob;f=src/virtio-blk.c;h=194deaf98b41a3b10fa6b7e0f49e9fa091a83222;hb=HEAD
>>
>
> Fair enough. On the other hand, if we implement it too soon, there
> will be less motivation in fixing the cmd646 emulation in qemu... ;-)

What's the actual bug with cmd646 in QEMU?


ATB,

Mark.



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