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

From: Cyrill Gorcunov
Date: Fri Apr 10 2015 - 18:20:20 EST

On Fri, Apr 10, 2015 at 03:16:18PM -0700, Andy Lutomirski wrote:
> 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.

Heh. Didn't reach this point yet, but be sure I'll contact you ;)
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