Re: [Qemu-devel] State of KVM bits in linux-headers

[Alexander Graf]

On 11.01.2012, at 20:41, Anthony Liguori wrote:

> On 01/11/2012 01:38 PM, Jan Kiszka wrote:
>>> 
>>>> I would like to see us avoiding this in the future. Headers update
>>>> patches should mention the source and should not be merged until the ABI
>>>> changes actually made it at least into kvm.git. Same applies, of course,
>>>> to the functional changes related to that ABI. Otherwise we risk quite
>>>> some mess on everyone's side.
>>> 
>>> I agree.
>>> 
>>>> Another thing: KVM_CAP_PPC_HIOR has been removed again from the kernel
>>>> and also the header. Is there real free space now or will the cap
>>>> reappear? If there should better be a placeholder, let's add it (to the
>>>> kernel).
>>> 
>>> I will reappear with ONE_REG semantics.
>>> 
>> 
>> OK.
>> 
>> Then please clean up now so that update-linux-headers.sh can be used
>> again by "normal" developers. :)
> 
> Before we did submodules and had a responsive BIOS maintainer, we maintained 
> patches within qemu.git for our external dependencies.  I think that's a good 
> strategy here too.  It's a little painful, but not entirely awful.
> 
> At least it makes it possible for you to (hopefully) trivial rebase a patch 
> if something is still in limbo.

Yeah, that works. I can easily script that part. It doesn't solve the actual 
underlying problem though that we don't know when the abi is actually stable. 
I'm slowly starting to understand Pekka ;).


Alex