linux-kernel - Re: [PATCH] MIPS: fix memory setup for platforms with PHY

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Message-Id: <20190227063242.GA16901@rapoport-lnx>
Date:   Wed, 27 Feb 2019 08:32:43 +0200
From:   Mike Rapoport <rppt@...ux.ibm.com>
To:     Thomas Bogendoerfer <tbogendoerfer@...e.de>
Cc:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: Re: [PATCH] MIPS: fix memory setup for platforms with PHY_OFFSET != 0

Hi,

On Tue, Feb 26, 2019 at 03:06:32PM +0100, Thomas Bogendoerfer wrote:
> For platforms, which use a PHY_OFFSET != 0, symbol _end also

Nit:                         PHYS_OFFSET, the same typo in subject

> contains that offset. So when calling memblock_reserve() for
> reserving kernel and initrd the size argument needs to be
> adjusted.

The changelog mentions initrd, but the patch changes only the kernel
reservation. Can you please update the changelog to match the code?

> Fixes: bcec54bf3118 ("mips: switch to NO_BOOTMEM")
> Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@...e.de>

With the amends above

Acked-by: Mike Rapoport <rppt@...ux.ibm.com>

> ---
>  arch/mips/kernel/setup.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
> index 8c6c48ed786a..d2e5a5ad0e6f 100644
> --- a/arch/mips/kernel/setup.c
> +++ b/arch/mips/kernel/setup.c
> @@ -384,7 +384,8 @@ static void __init bootmem_init(void)
>  	init_initrd();
>  	reserved_end = (unsigned long) PFN_UP(__pa_symbol(&_end));
> 
> -	memblock_reserve(PHYS_OFFSET, reserved_end << PAGE_SHIFT);
> +	memblock_reserve(PHYS_OFFSET,
> +			 (reserved_end << PAGE_SHIFT) - PHYS_OFFSET);
> 
>  	/*
>  	 * max_low_pfn is not a number of pages. The number of pages
> -- 
> 2.13.7
> 

-- 
Sincerely yours,
Mike.