linux-kernel - Re: [PATCH 0/5] PPC32/ioremap: Use memblock API to check for RAM

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Message-ID: <20180224134831.iulzv7iiz3tq7icr@latitude>
Date:   Sat, 24 Feb 2018 14:48:31 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     Christophe LEROY <christophe.leroy@....fr>
Cc:     Jonathan Neuschäfer <j.neuschaefer@....net>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>, linux-mm@...ck.org,
        Joel Stanley <joel@....id.au>
Subject: Re: [PATCH 0/5] PPC32/ioremap: Use memblock API to check for RAM

On Fri, Feb 23, 2018 at 09:01:17AM +0100, Christophe LEROY wrote:
> 
> 
> Le 22/02/2018 à 13:15, Jonathan Neuschäfer a écrit :
> > This patchset solves the same problem as my previous one[1] but follows
> > a rather different approach. Instead of implementing DISCONTIGMEM for
> > PowerPC32, I simply switched the "is this RAM" check in __ioremap_caller
> > to the existing page_is_ram function, and unified page_is_ram to search
> > memblock.memory on PPC64 and PPC32.
> > 
> > The intended result is, as before, that my Wii can allocate the MMIO
> > range of its GPIO controller, which was previously not possible, because
> > the reserved memory hack (__allow_ioremap_reserved) didn't affect the
> > API in kernel/resource.c.
> > 
> > Thanks to Christophe Leroy for reviewing the previous patchset.
> 
> I tested your new serie, it doesn't break my 8xx so it is OK for me.

Thanks for testing it!


Jonathan Neuschäfer

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