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

[Andy Lutomirski]

On Wed, Jun 29, 2016 at 3:57 AM, Dmitry Safonov <dsafonov@xxxxxxxxxxxxx> 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@xxxxxxxxxx>

>
> Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
> Cc: Andy Lutomirski <luto@xxxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
> Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
> Cc: x86@xxxxxxxxxx
> Signed-off-by: Dmitry Safonov <dsafonov@xxxxxxxxxxxxx>