linux-kernel - Re: [PATCH] riscv: mm: implement pgprot

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Message-ID: <28d68897-14e4-4dd2-941f-2352d1313fa7@sifive.com>
Date:   Tue, 21 Nov 2023 15:34:41 -0600
From:   Samuel Holland <samuel.holland@...ive.com>
To:     Jisheng Zhang <jszhang@...nel.org>
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Subject: Re: [PATCH] riscv: mm: implement pgprot_nx

On 2023-11-21 10:06 AM, Jisheng Zhang wrote:
> commit cca98e9f8b5e ("mm: enforce that vmap can't map pages
> executable") enforces the W^X protection by not allowing remapping
> existing pages as executable. Add riscv bits so that riscv can benefit
> the same protection.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  arch/riscv/include/asm/pgtable.h | 6 ++++++
>  1 file changed, 6 insertions(+)

Reviewed-by: Samuel Holland <samuel.holland@...ive.com>
Tested-by: Samuel Holland <samuel.holland@...ive.com>