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References: <1447698757-8762-1-git-send-email-ard.biesheuvel@linaro.org> <1447698757-8762-2-git-send-email-ard.biesheuvel@linaro.org> <20151116185859.GF8644@n2100.arm.linux.org.uk> <CAKv+Gu-COD0eSWqaTfV_QgCDEiBg5Af8FDVx+TMiYuVkqgTrvw@mail.gmail.com> <20151116194914.GK8644@n2100.arm.linux.org.uk>
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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [PATCH v2 01/12] mm/memblock: add MEMBLOCK_NOMAP attribute to memblock memory table
Date: Mon, 16 Nov 2015 21:33:47 +0100
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To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>, Will Deacon <will.deacon@arm.com>, Grant Likely <grant.likely@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Mark Rutland <mark.rutland@arm.com>, Leif Lindholm <leif.lindholm@linaro.org>, Roy Franz <roy.franz@linaro.org>, Mark Salter <msalter@redhat.com>, Ryan Harkin <ryan.harkin@linaro.org>, Andrew Morton <akpm@linux-foundation.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>



> On 16 nov. 2015, at 20:49, Russell King - ARM Linux <linux@arm.linux.org.u=
k> wrote:
>=20
>> On Mon, Nov 16, 2015 at 08:09:38PM +0100, Ard Biesheuvel wrote:
>> The main difference is that memblock_is_memory() still returns true
>> for the region. This is useful in some cases, e.g., to decide which
>> attributes to use when mapping.
>=20
> Ok, so we'd need to switch to using memblock_is_map_memory() instead
> for pfn_valid() then.

Indeed, as is implemented by 10/12

> --=20
> FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
> according to speedtest.net.

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