linux-kernel - Re: [PATCH] RISC-V: Fix usage of memblock_enforce_memory

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Date:   Thu, 17 Dec 2020 16:12:04 +0800
From:   Bin Meng <bmeng.cn@...il.com>
To:     Atish Patra <atish.patra@....com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anup Patel <anup.patel@....com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Mike Rapoport <rppt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>
Subject: Re: [PATCH] RISC-V: Fix usage of memblock_enforce_memory_limit

Hi Atish,

On Thu, Dec 17, 2020 at 3:49 PM Atish Patra <atish.patra@....com> wrote:
>
> memblock_enforce_memory_limit accepts the maximum memory size not the last
> address. Fix the function invocation correctly.
>
> Fixes: 1bd14a66ee52 ("RISC-V: Remove any memblock representing unusable memory area")
>
> Signed-off-by: Atish Patra <atish.patra@....com>
> ---
>  arch/riscv/mm/init.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>

Thank you for working on this.

Tested with QEMU 5.2.0 on 32-bit 'virt' and 'sifive_u', with
fw_jump.bin used as the -bios.
32-bit 'virt' boots, but 32-bit 'sifive_u' still does not boot, which
should be another issue because reverting the original 1bd14a66ee52 it
still does not help 'sifive_u'.

Tested-by: Bin Meng <bin.meng@...driver.com>

I believe the following tag should also be added and patch cc'ed to
stable-kernel:

Reported-by: Bin Meng <bin.meng@...driver.com>
Cc: <stable@...r.kernel.org> # 5.10

Regards,
Bin