[PATCH] aarch64: Revert the change of the __reserved member of mcontext_t

[Szabolcs Nagy]

On 24/01/18 11:55, Szabolcs Nagy wrote:
> On 23/01/18 15:16, Florian Weimer wrote:
>> On 01/23/2018 03:35 PM, Szabolcs Nagy wrote:
>>> The uc_mcontext.__reserved member of ucontext_t is a user visible API,
>>> that should not be changed, because this is the only way to access cpu
>>> states of various extensions of linux asm/sigcontext.h, it does not
>>> violate namespace rules either, so revert this part of the commit
>>>
>>> commit 4fa9b3bfe6759c82beb4b043a54a3598ca467289
>>> Commit:     Joseph Myers<joseph@codesourcery.com>
>>>
>>>       Fix mcontext_t sigcontext namespace (bug 21457).
>>>
>>> (In principle the user can type cast &uc_mcontext to struct sigcontext*
>>> to use the linux sigcontext fields, but that's not the existing practice
>>> since mcontext_t used to be a typedef of struct sigcontext.)
>>>
>>> I plan to commit this soon for 2.27 and backport it to 2.26 if there are
>>> no comments.
>>
>> I think this is the right thing to do, but unfortunately, this back-and-forth is a bit painful.
>>
> 
> ok, i opened bug 22742 because it's a user visible change.
> 
> committed now on 2.27 (will backport it in a day or two).
> 

the problematic commit is not present in 2.26, so
this is not a 2.26 regression, i'm not sure how i
missed that (i checked the git log of 2.26 branch
several times).

so there is no user visible api break, sorry for the noise.