[CRIU] [PATCHv2 12/17] core/x86: add compatible 32 register set

[Dmitry Safonov]

On 04/18/2016 01:32 PM, Pavel Emelyanov wrote:
> On 04/18/2016 01:24 PM, Dmitry Safonov wrote:
>> On 04/18/2016 01:17 PM, Pavel Emelyanov wrote:
>>> You cannot change field numbers in proto files w/o breaking backward
>>> compatibility.
>> Ok, so I will make gpregs_case the last member of
>> user_x86_regs_entry. Seems like, I also should make it
>> `optional`, so images made before could be read after
>> the patch. Right?
> Right.
>
> Or you can put the regs mode into message thread_info_x86. And make it optional too.

On the other hand, I may omit `optional` and use`required`
as gpregs will be inited with USER_X86_REGS_ENTRY__INIT,
filling it with zeros. And gpregs_case is 1 or 2, according
to proto enum.
So I may even make NATIVE = 0 and all will work as needed.
But I'm not sure, may I always expect this behavior?

-- 
Regards,
Dmitry Safonov