linux-kernel - Re: [PATCH] RISC-V: Add the directive for alignment of stvec's value

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Message-ID: <20180802100518.GA4144@infradead.org>
Date:   Thu, 2 Aug 2018 03:05:18 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Zong Li <zong@...estech.com>
Cc:     palmer@...ive.com, aou@...s.berkeley.edu,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        greentime@...estech.com
Subject: Re: [PATCH] RISC-V: Add the directive for alignment of stvec's value

On Thu, Jun 21, 2018 at 09:40:07AM +0800, Zong Li wrote:
> The stvec's value must be 4 byte alignment by specification definition.
> This directive avoids to stvec be set the non-alignment value by the
> following code in head.S
> 
>  /* Point stvec to virtual address of intruction after satp write */
> la a0, 1f
> add a0, a0, a1
> csrw stvec, a0
> 
> Signed-off-by: Zong Li <zong@...estech.com>

Just noticed this didn't get picked up yet, so:

Reviewed-by: Christoph Hellwig <hch@....de>