linux-kernel - Re: [PATCH v2] MIPS: Loongson: Use default CONFIG_FRAME_WARN as 2048 for Loongson64 to fix build warnings

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Message-ID: <20200817112210.GC11725@alpha.franken.de>
Date:   Mon, 17 Aug 2020 13:22:10 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v2] MIPS: Loongson: Use default CONFIG_FRAME_WARN as 2048
 for Loongson64 to fix build warnings

On Fri, Aug 14, 2020 at 06:31:30PM +0800, Tiezhu Yang wrote:
> After commit 70b838292bef ("MIPS: Update default config file for
> Loongson-3"), CONFIG_VHOST_SCSI and CONFIG_VHOST are set when use
> loongson3_defconfig, and then there exists the following two build
> warnings related with these two configs:
> 
>   CC [M]  drivers/vhost/scsi.o
> drivers/vhost/scsi.c: In function ‘vhost_scsi_flush’:
> drivers/vhost/scsi.c:1374:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
>  }
>  ^
>   LD [M]  drivers/vhost/vhost_scsi.o
>   CC [M]  drivers/vhost/vsock.o
>   LD [M]  drivers/vhost/vhost_vsock.o
>   CC [M]  drivers/vhost/vhost.o
> drivers/vhost/vhost.c: In function ‘log_used’:
> drivers/vhost/vhost.c:1896:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
>  }
>  ^
> 
> CONFIG_FRAME_WARN=2048 can fix it, since the default CONFIG_FRAME_WARN
> for 64BIT is 2048, just delete the CONFIG_FRAME_WARN line in defconfig.
> 
> config FRAME_WARN
>         int "Warn for stack frames larger than"
>         range 0 8192
>         default 2048 if GCC_PLUGIN_LATENT_ENTROPY
>         default 1280 if (!64BIT && PARISC)
>         default 1024 if (!64BIT && !PARISC)
>         default 2048 if 64BIT
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>  arch/mips/configs/loongson3_defconfig | 1 -
>  1 file changed, 1 deletion(-)

applied to mips-next.

Thomas.

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