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Re: [PATCHv2 6/6] x86/signal: add SA_{X32,IA32}_ABI sa_flags

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  Re: [PATCHv2 6/6] x86/signal: add SA_{X32,IA32}_ABI sa_flags Andy Lutomirski <luto@amacapital.net> - 2016-07-06 16:40 +0200

#1437771 — Re: [PATCHv2 6/6] x86/signal: add SA_{X32,IA32}_ABI sa_flags

On Wed, Jun 29, 2016 at 3:57 AM, Dmitry Safonov <dsafonov@virtuozzo.com> wrote:
> Introduce new flags that defines which ABI to use on creating sigframe.
> Those flags kernel will set according to sigaction syscall ABI,
> which set handler for the signal being delivered.
>
> So that will drop the dependency on TIF_IA32/TIF_X32 flags on signal deliver.
> Those flags will be used only under CONFIG_COMPAT.
>
> Similar way ARM uses sa_flags to differ in which mode deliver signal
> for 26-bit applications (look at SA_THIRYTWO).

Reviewed-by: Andy Lutomirski <luto@kernel.org>

>
> Cc: Oleg Nesterov <oleg@redhat.com>
> Cc: Andy Lutomirski <luto@kernel.org>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Cyrill Gorcunov <gorcunov@openvz.org>
> Cc: Pavel Emelyanov <xemul@virtuozzo.com>
> Cc: x86@kernel.org
> Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>

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