linux-kernel - Re: [PATCH] MIPS: zboot: Avoid endless loop in clear BSS.

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Date:   Thu, 7 Jan 2021 17:28:03 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Jinyang He <hejinyang@...ngson.cn>
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: zboot: Avoid endless loop in clear BSS.

On Wed, Jan 06, 2021 at 08:47:39AM +0800, Jinyang He wrote:
> Commit 2ee1503e546f ("MIPS: zboot: head.S clean up").
> 
> After .noreorder removed, clear BSS fall into endless loop. The bne
> instruction will add nop to the delay slot at compile time. So a0
> register will not increment by 4. Fix it and clear BSS from _edata
> to (_end - 1).
> 
> Signed-off-by: Jinyang He <hejinyang@...ngson.cn>
> ---
>  arch/mips/boot/compressed/head.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

applied to mips-next.

Thomas.

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