Re: [PATCH v3 1/2] x86_64,signal: Fix SS handling for signals delivered to 64-bit programs

From: Andy Lutomirski
Date: Fri Apr 10 2015 - 18:16:48 EST

On Fri, Apr 10, 2015 at 3:11 PM, Cyrill Gorcunov <gorcunov@xxxxxxxxx> wrote:
> On Fri, Apr 10, 2015 at 02:59:19PM -0700, Andy Lutomirski wrote:
>> As long as you're doing that, any chance you could remove CPREG1(gs)
>> and CPREG1(fs) as well? They haven't had any effect since
>> 2.5.something_very_old, and the kernel might want to reuse those
>> sigcontext slots some day.
> Yeah, absolutely. I'm implementing 32bits support for criu now
> so I managed to postprone this task but will implement on the
> week. Thanks for reminder!

Yikes, have fun with that. I think there's a major vdso issue you'll
hit. Make sure you test on Intel hardware. I'll try to help if you
find stuff in my areas of the kernel.


Andy Lutomirski
AMA Capital Management, LLC
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