Re: [Qemu-devel] [PATCH] get roms more room.

[Glauber Costa <glommer@gmail.com>]

On Sat, Mar 28, 2009 at 2:30 PM, Anthony Liguori <aliguori@us.ibm.com> wrote:
> Glauber Costa wrote:
>>
>> This patch increases by 50 % the size available for option roms.
>> The main motivator is that some roms grew bigger than the 64k we
>> currently allocate for them (Hey, it's 2009!)
>>
>> One example is the gpxe project, that produces some roms with 69k,
>> 70k, etc. The space proposed by this patch actually makes it as
>> big as 84k. Probably still a fit for some time.
>>
>> But there is no free lunch. This space must come from somewhere,
>> and we take it from vga rom space. Currently, our vga roms are
>> around 35k in size. With this patch, option rom space will begin
>> just after vga ends, aligned to the next 2k boundary.
>>
>> Technicaly, we could do the same with the uper space (the bios itself),
>> but since bochs bios is already 128 k in size, I don't see an
>> urgent need to do it.
>>
>> [ fix case for vgabioses smaller than 30k, by Carl-Daniel Hailfinger ]
>>
>> Signed-off-by: Glauber Costa <glommer@redhat.com>
>>
>
> Applied.  Thanks.
>
> Sounds like it's time to switch to gpxe roms.  I wonder what ever happened
> to the gpxe virtio-blk patches...
>
> Regards,
Not yet.

There's still a patch that needs to be applied to the bios. I've
already sent it to bochs-developers list, I believe it should go
there, rather than here.

Also, currently gpxe does not work with kvm, just qemu. Stiil unsure
why, but something to do with interrupts being disabled when they
shouldn't. I'm still on this,
expect news soon.


-- 
Glauber  Costa.
"Free as in Freedom"
http://glommer.net

"The less confident you are, the more serious you have to act."