From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Tue, 5 Jun 2012 00:59:29 +0100 Subject: strongly ordered comment on device memory in mmu.c In-Reply-To: References: Message-ID: <20120604235929.GA29501@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Jun 04, 2012 at 03:16:31PM -0700, John Linn wrote: > Hi, > > We see that the following comment appears to be wrong in that the > memory is device memory rather than strongly ordered memory. > > ??????? [MT_DEVICE] = {?????????? /* Strongly ordered / ARMv6 shared device */ > > If it's really just a bad comment we'll do a patch, but I was > wondering if there's more to it such that the comment is correct? On pre-ARMv6, it's strongly ordered. On post-ARMv6, it's "shared device". The comment is accurate though possibly a little ambiguous; you're just unaware of the history.