Re: [RFC PATCH 3/4] arm64: add support for memtest

From: Will Deacon <will.deacon@arm.com>
To: Vladimir Murzin <Vladimir.Murzin@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
	"x86@kernel.org" <x86@kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"hpa@zytor.com" <hpa@zytor.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"lauraa@codeaurora.org" <lauraa@codeaurora.org>,
	Catalin Marinas <Catalin.Marinas@arm.com>,
	"linux@arm.linux.org.uk" <linux@arm.linux.org.uk>,
	"arnd@arndb.de" <arnd@arndb.de>,
	Mark Rutland <Mark.Rutland@arm.com>,
	"ard.biesheuvel@linaro.org" <ard.biesheuvel@linaro.org>
Subject: Re: [RFC PATCH 3/4] arm64: add support for memtest
Date: Mon, 2 Mar 2015 18:56:07 +0000	[thread overview]
Message-ID: <20150302185607.GG7919@arm.com> (raw)
In-Reply-To: <1425308145-20769-4-git-send-email-vladimir.murzin@arm.com>

On Mon, Mar 02, 2015 at 02:55:44PM +0000, Vladimir Murzin wrote:
> Add support for memtest command line option.
> 
> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
> ---
>  arch/arm64/mm/init.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
> index ae85da6..597831b 100644
> --- a/arch/arm64/mm/init.c
> +++ b/arch/arm64/mm/init.c
> @@ -190,6 +190,8 @@ void __init bootmem_init(void)
>  	min = PFN_UP(memblock_start_of_DRAM());
>  	max = PFN_DOWN(memblock_end_of_DRAM());
>  
> +	early_memtest(min << PAGE_SHIFT, max << PAGE_SHIFT);
> +
>  	/*
>  	 * Sparsemem tries to allocate bootmem in memory_present(), so must be
>  	 * done after the fixed reservations.

This is really neat, thanks for doing this Vladimir!

  Acked-by: Will Deacon <will.deacon@arm.com>

For the series, modulo Baruch's comments about Documentation updates.

Will