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From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] Revert support for reserved memory regions defined in device tree
Date: Wed, 20 Nov 2013 09:01:44 +1100	[thread overview]
Message-ID: <1384898504.26969.48.camel@pasglop> (raw)
In-Reply-To: <20131119151418.8BB2BC4079D@trevor.secretlab.ca>

On Tue, 2013-11-19 at 15:14 +0000, Grant Likely wrote:
> > The proposal look good for me. I'm not convinced that we really need the
> > support for 'reg' property, as the fixed memory region is a special case
> > of generic dynamic allocation specified by the size and alloc-ranges, but
> > I assume that there have been already a long discussion about this, so I
> > accept the common consensus.
> 
> It is absolutely necessary for some use cases. For example, a
> framebuffer enabled by firmware and passed onto the kernel for
> flicker-free boot. Some platforms have fixed regions that cannot be
> moved up.

Arguably that could be covered with alloc-range and size by making the range be
the reg property content basically (and thus size == size of range) but I
prefer the reg property, it's a clearer statement of intent.

Cheers,
Ben.

  reply	other threads:[~2013-11-19 22:01 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-11  7:27 [PATCH 0/2] Revert support for reserved memory regions defined in device tree Marek Szyprowski
     [not found] ` < 20131030134702.19B57C402A0@trevor.secretlab.ca>
2013-10-11  7:27 ` [PATCH 1/2] Revert "ARM: init: add support for reserved memory defined by device tree" Marek Szyprowski
2013-10-11  7:27 ` [PATCH 2/2] Revert "drivers: of: add initialization code for dma reserved memory" Marek Szyprowski
2013-10-11  7:48 ` [PATCH 0/2] Revert support for reserved memory regions defined in device tree Benjamin Herrenschmidt
2013-10-11 18:12   ` Kumar Gala
2013-10-15 11:41     ` Grant Likely
2013-10-17 18:37   ` Matt Sealey
2013-10-17 19:35     ` Benjamin Herrenschmidt
2013-10-15 11:40 ` Grant Likely
2013-10-15 13:27   ` Marek Szyprowski
2013-10-30 13:47 ` Grant Likely
2013-10-30 17:30   ` Matt Sealey
2013-11-19 12:27   ` Marek Szyprowski
2013-11-19 15:14     ` Grant Likely
2013-11-19 22:01       ` Benjamin Herrenschmidt [this message]
2013-11-20 13:04         ` Grant Likely

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