linux-kernel - Re: [PATCH 4.9 010/104] MIPS: fix mem=X@Y commandline processing

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Message-ID: <CA+7wUszpNtwje0kPs07nDD2aSeYafSuW1dpX8+Z5HKOBSNC0eA@mail.gmail.com>
Date:   Fri, 6 Oct 2017 11:10:11 +0200
From:   Mathieu Malaterre <malat@...ian.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Marcin Nowakowski <marcin.nowakowski@...tec.com>,
        linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: Re: [PATCH 4.9 010/104] MIPS: fix mem=X@Y commandline processing

Hi Greg,

Please do not apply to stable.

See: https://patchwork.linux-mips.org/patch/17235/

Thanks

On Fri, Oct 6, 2017 at 10:50 AM, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> 4.9-stable review patch.  If anyone has any objections, please let me know.
>
> ------------------
>
> From: Marcin Nowakowski <marcin.nowakowski@...tec.com>
>
>
> [ Upstream commit 73fbc1eba7ffa3bf0ad12486232a8a1edb4e4411 ]
>
> When a memory offset is specified through the commandline, add the
> memory in range PHYS_OFFSET:Y as reserved memory area.
> Otherwise the bootmem allocator is initialised with low page equal to
> min_low_pfn = PHYS_OFFSET, and in free_all_bootmem will process pages
> starting from min_low_pfn instead of PFN(Y).
>
> Signed-off-by: Marcin Nowakowski <marcin.nowakowski@...tec.com>
> Cc: linux-mips@...ux-mips.org
> Patchwork: https://patchwork.linux-mips.org/patch/14613/
> Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
> Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  arch/mips/kernel/setup.c |    4 ++++
>  1 file changed, 4 insertions(+)
>
> --- a/arch/mips/kernel/setup.c
> +++ b/arch/mips/kernel/setup.c
> @@ -589,6 +589,10 @@ static int __init early_parse_mem(char *
>                 start = memparse(p + 1, &p);
>
>         add_memory_region(start, size, BOOT_MEM_RAM);
> +
> +       if (start && start > PHYS_OFFSET)
> +               add_memory_region(PHYS_OFFSET, start - PHYS_OFFSET,
> +                               BOOT_MEM_RESERVED);
>         return 0;
>  }
>  early_param("mem", early_parse_mem);
>
>
>