linux-kernel - Re: [PATCH v3 RESEND] MIPS: Make check condition for SDBBP more readable

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Date:   Thu, 11 Feb 2021 11:20:54 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v3 RESEND] MIPS: Make check condition for SDBBP more
 readable

On Wed, Feb 10, 2021 at 04:30:26PM +0800, Tiezhu Yang wrote:
> According to MIPS EJTAG Specification [1], a Debug Breakpoint
> exception occurs when an SDBBP instruction is executed, the
> CP0_DEBUG bit DBp indicates that a Debug Breakpoint exception
> occurred.
> 
> When I read the original code, it looks a little confusing
> at first glance, just check bit DBp for SDBBP to make the
> code more readable, it will be much easier to understand.
> 
> [1] http://www.t-es-t.hu/download/mips/md00047f.pdf
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
> 
> RESEND due to send to mail list failed.
> 
> v3: update the commit message and modify the patch subject
> 
> v2: add MIPS_DEBUG_DBP definition
> 
>  arch/mips/include/asm/mipsregs.h | 4 ++++
>  arch/mips/kernel/genex.S         | 4 ++--
>  2 files changed, 6 insertions(+), 2 deletions(-)

applied to mips-next.

Thomas.

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