[CRIU] vdso and vvar ordering

[Pavel Emelyanov]

On 07/01/2014 10:38 PM, Cyrill Gorcunov wrote:
> On Tue, Jul 01, 2014 at 10:31:50AM -0700, Andy Lutomirski wrote:
>> Hi-
>>
>> This commit:
>>
>> http://git.criu.org/?p=criu.git;a=commit;h=fe7b8aeb8c65e11e190282aae8db2d2bebd4f6e9
>>
>> says that it expects the vvar area to follow the vdso.  Any chance you
>> could make it keep working if the vvar area is immediately before the
>> vdso?  I kind of want to flip the order.
>>
>> This isn't out of malice or any aesthetic consideration -- it turns
>> out that reliably building a vdso image that keep gdb happy and has
>> the vvar area immediately after the vdso is considerably harder than I
>> expected.  Reversing it is IMO ugly, but it will be easier to
>> construct the ELF image.
>>
>> I've gotten a report that at least one binutils version can't build
>> 3.16-rc3 as a result.  Grr.
> 
> Sure, no problem, just CC me on the commit which does that in kernel.

Cyrill, why not just get the vvar area in whatever location it
appears to be?

Thanks,
Pavel