From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Tue, 7 Jan 2014 15:25:56 +0000 Subject: [PATCH v2 1/5] mm: create generic early_ioremap() support In-Reply-To: <1389062120-31896-2-git-send-email-msalter@redhat.com> References: <1389062120-31896-1-git-send-email-msalter@redhat.com> <1389062120-31896-2-git-send-email-msalter@redhat.com> Message-ID: <20140107152555.GB16947@localhost> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jan 07, 2014 at 02:35:16AM +0000, Mark Salter wrote: > This patch creates a generic implementation of early_ioremap() support > based on the existing x86 implementation. early_ioremp() is useful for > early boot code which needs to temporarily map I/O or memory regions > before normal mapping functions such as ioremap() are available. > > There is one difference from the existing x86 implementation which > should be noted. The generic early_memremap() function does not return > an __iomem pointer and a new early_memunmap() function has been added > to act as a wrapper for early_iounmap() but with a non __iomem pointer > passed in. This is in line with the first patch of this series: > > https://lkml.org/lkml/2013/12/22/69 > > Signed-off-by: Mark Salter > CC: x86 at kernel.org > CC: linux-arm-kernel at lists.infradead.org > CC: Andrew Morton > CC: Arnd Bergmann > CC: Ingo Molnar > CC: Thomas Gleixner > CC: "H. Peter Anvin" > CC: Russell King > CC: Catalin Marinas > CC: Will Deacon Acked-by: Catalin Marinas