Re: [Xen-devel] [PATCH RFC] xen-block: correctly define structures in public headers

["Roger Pau Monné" <roger.pau@citrix.com>]

On 11/12/13 17:18, Stefano Stabellini wrote:
> On Tue, 3 Dec 2013, Konrad Rzeszutek Wilk wrote:
>>>> If Konrad and Boris agree that breaking the kernel's ABI in this way is
>>>> acceptable in this specific case, I'll defer to them.
>>>
>>> My opinion as Xen on ARM hypervisor maintainer is that this is the right
>>> thing to do in this case.
>>
>> Heh. If somebody can guarantee me that (by testing the right variants and
>> mentioning this in the git commit) that this does not break x86, then
>> I am fine.
>>
>> And by 'break x86' I mean that this combination works:
>>  32-bit domU on 64-bit dom0
>>  64-bit domU on 32-bit dom0
>>
>> And perhaps also the obvious:
>>  64-bit domU on 64-bit dom0
>>  32-bit domU on 32-bit dom0
>>
>> Since the xen-blkback has its own version of the structs there is no
>> need to change change newer and older version of it.
>>
>> As long as that works I am OK sticking it in.
>>
>> I think from the ARM perspective it is still in 'experimental' phase
>> so anything goes to make it work under ARM.
> 
> 
> Roger, can you please test this patch on x86 as suggested by Konrad and
> confirm that it doesn't break anything?

This is not the right patch, the right one is the one posted by Julien:

http://marc.info/?l=linux-kernel&m=138608528604584&w=2