linux-kernel - Re: [PATCH 1/4] MIPS: uaccess: emulate Ingenic LXW/LXH/LXHU uaccess

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Message-ID: <20230609082242.GG8160@alpha.franken.de>
Date:   Fri, 9 Jun 2023 10:22:42 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     Paul Burton <paulburton@...nel.org>,
        Siarhei Volkau <lis8215@...il.com>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, list@...ndingux.net
Subject: Re: [PATCH 1/4] MIPS: uaccess: emulate Ingenic LXW/LXH/LXHU uaccess

On Sun, Jun 04, 2023 at 02:26:52PM +0200, Paul Cercueil wrote:
> From: Siarhei Volkau <lis8215@...il.com>
> 
> The LXW, LXH, LXHU opcodes are part of the MXU ASE found in Ingenic
> XBurst based SoCs.
> 
> While technically part of the MXU ASE, they do not touch any of the SIMD
> registers, and can be used even when the MXU ASE is disabled.
> 
> This patch makes it possible to emulate unaligned access for those
> instructions.
> 
> Signed-off-by: Siarhei Volkau <lis8215@...il.com>
> ---
>  arch/mips/include/uapi/asm/inst.h | 33 +++++++++++++++++++++++++
>  arch/mips/kernel/unaligned.c      | 41 +++++++++++++++++++++++++++++++
>  2 files changed, 74 insertions(+)

applied to mips-next.

Thomas.

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