Re: [PATCH] MIPS: Fix IRQ tracing when call handle_fpe()

[Thomas Bogendoerfer]

On Tue, May 26, 2020 at 02:03:14PM +0800, Lichao Liu wrote:
> From: YuanJunQing <yuanjunqing66@xxxxxxx>
> 
> Register "a1" is unsaved in this function,
>  when CONFIG_TRACE_IRQFLAGS is enabled,
>  the TRACE_IRQS_OFF macro will call trace_hardirqs_off(),
>  and this may change register "a1".
>  The variment of register "a1" may send SIGFPE signal
>  to task when call do_fpe(),and this may kill the task.
> 
> Signed-off-by: YuanJunQing <yuanjunqing66@xxxxxxx>

if you send patches from other people, please add your
Signed-off-by.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]