Re: [PATCH v4 03/15] h8300: Exception and Interrupt handling

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Feb 21, 2015 at 04:53:47PM +0900, Yoshinori Sato wrote:

> +resume_userspace:
> +	andc	#0xbf,ccr
> +	mov.l	sp,er4
> +	and.w	#0xe000,r4		/* er4 <- current thread info */
> +	mov.l	@(TI_FLAGS:16,er4),er1
> +	and.l	#_TIF_WORK_MASK,er1
> +	beq	restore_all:8
> +work_pending:
> +	btst	#TIF_NEED_RESCHED,r1l
> +	bne	work_resched:8
> +	/* work notifysig */
> +	mov.l	sp,er0
> +	subs	#4,er0			/* er0: pt_regs */
> +	jsr	@do_notify_resume
> +	bra	restore_all:8

This is wrong.  You really need to handle multiple signals; it ought to
reload er1 and recheck it (or just branch to resume_userspace instead)
--
To unsubscribe from this list: send the line "unsubscribe linux-arch" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Newbies]     [x86 Platform Driver]     [Netdev]     [Linux Wireless]     [Netfilter]     [Bugtraq]     [Linux Filesystems]     [Yosemite Discussion]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]

  Powered by Linux