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Date: Wed, 29 Jul 2015 14:47:40 -0700
Message-ID: <CAPcyv4j67493ROvnC1EZBEFMiWB=gLu=C-Y-PrJf0BvO3A=y2w@mail.gmail.com>
Subject: Re: [PATCH v2 08/25] arch: introduce memremap()
From: Dan Williams <dan.j.williams@intel.com>
To: "Luis R. Rodriguez" <mcgrof@suse.com>
Cc: Toshi Kani <toshi.kani@hp.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>, linux-arch@vger.kernel.org,
        Arnd Bergmann <arnd@arndb.de>,
        "linux-nvdimm@lists.01.org" <linux-nvdimm@ml01.01.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Christoph Hellwig <hch@lst.de>, "H. Peter Anvin" <hpa@zytor.com>,
        Russell King <rmk+kernel@arm.linux.org.uk>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
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On Wed, Jul 29, 2015 at 2:43 PM, Luis R. Rodriguez <mcgrof@suse.com> wrote:
> While at it, Dan, will / should memremap() support overlapping calls ?
> What is the expectation on behaviour ?

It will be the same as ioremap().  Each mapping gets its own virtual
address and overlapping calls are permitted.  The only protection is
that RAM is never mapped with an alias.
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