linux-kernel - Re: [PATCH V4 16/26] riscv/mm: Enable ARCH_HAS_VM_GET_PAGE

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Date:   Thu, 23 Jun 2022 22:10:59 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-mm@...ck.org, hch@...radead.org, christophe.leroy@...roup.eu,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
        x86@...nel.org, openrisc@...ts.librecores.org,
        linux-xtensa@...ux-xtensa.org, linux-csky@...r.kernel.org,
        linux-hexagon@...r.kernel.org, linux-parisc@...r.kernel.org,
        linux-alpha@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-um@...ts.infradead.org,
        linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>
Subject: Re: [PATCH V4 16/26] riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT

On Fri, Jun 24, 2022 at 10:13:29AM +0530, Anshuman Khandual wrote:
index d466ec670e1f..f976580500b1 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -288,6 +288,26 @@ static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAG
>  #define early_pg_dir           ((pgd_t *)XIP_FIXUP(early_pg_dir))
>  #endif /* CONFIG_XIP_KERNEL */
>  
> +static pgprot_t protection_map[16] __ro_after_init = {

Can't this be marked const now?