linux-kernel - Re: [PATCH fixes 1/4] MIPS: mipsmtregs: Fix target register for MFTC0

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Date: Fri, 21 Jun 2024 10:25:48 +0200
From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To: Jiaxun Yang <jiaxun.yang@...goat.com>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH fixes 1/4] MIPS: mipsmtregs: Fix target register for MFTC0

On Sun, Jun 16, 2024 at 02:25:02PM +0100, Jiaxun Yang wrote:
> Target register of mftc0 should be __res instead of $1, this is
> a leftover from old .insn code.
> 
> Fixes: dd6d29a61489 ("MIPS: Implement microMIPS MT ASE helpers")
> Cc: stable@...r.kernel.org
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> ---
>  arch/mips/include/asm/mipsmtregs.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
> index 30e86861c206..b1ee3c48e84b 100644
> --- a/arch/mips/include/asm/mipsmtregs.h
> +++ b/arch/mips/include/asm/mipsmtregs.h
> @@ -322,7 +322,7 @@ static inline void ehb(void)
>  	"	.set	push				\n"	\
>  	"	.set	"MIPS_ISA_LEVEL"		\n"	\
>  	_ASM_SET_MFTC0							\
> -	"	mftc0	$1, " #rt ", " #sel "		\n"	\
> +	"	mftc0	%0, " #rt ", " #sel "		\n"	\
>  	_ASM_UNSET_MFTC0						\
>  	"	.set	pop				\n"	\
>  	: "=r" (__res));						\
> 
> -- 
> 2.43.0

applied to mips-fixes.

Thomas.

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