From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Christoph Hellwig <hch@lst.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: powerpc: use mm zones more sensibly
Date: Sat, 22 Dec 2018 20:54:48 +1100 (AEDT) [thread overview]
Message-ID: <43MLSm3jd2z9sPK@ozlabs.org> (raw)
In-Reply-To: <20181216165349.24281-1-hch@lst.de>
On Sun, 2018-12-16 at 16:53:49 UTC, Christoph Hellwig wrote:
> Powerpc has somewhat odd usage where ZONE_DMA is used for all memory on
> common 64-bit configfs, and ZONE_DMA32 is used for 31-bit schemes.
>
> Move to a scheme closer to what other architectures use (and I dare to
> say the intent of the system):
>
> - ZONE_DMA: optionally for memory < 31-bit (64-bit embedded only)
> - ZONE_NORMAL: everything addressable by the kernel
> - ZONE_HIGHMEM: memory > 32-bit for 32-bit kernels
>
> Also provide information on how ZONE_DMA is used by defining
> ARCH_ZONE_DMA_BITS.
>
> Contains various fixes from Benjamin Herrenschmidt.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/25078dc1f74be16b858e914f52cc8f
cheers
prev parent reply other threads:[~2018-12-22 10:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-16 16:53 [PATCH] powerpc: use mm zones more sensibly Christoph Hellwig
2018-12-22 9:54 ` Michael Ellerman [this message]
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