From mboxrd@z Thu Jan 1 00:00:00 1970 From: gregory.clement@free-electrons.com (Gregory CLEMENT) Date: Fri, 05 Apr 2013 23:13:58 +0200 Subject: [PATCH v2 2/9] arm: mvebu: Align the internal registers virtual base to support LPAE In-Reply-To: <201304052250.28641.arnd@arndb.de> References: <1365193444-13441-1-git-send-email-gregory.clement@free-electrons.com> <1365193444-13441-3-git-send-email-gregory.clement@free-electrons.com> <201304052250.28641.arnd@arndb.de> Message-ID: <515F3E96.4040307@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 04/05/2013 10:50 PM, Arnd Bergmann wrote: > On Friday 05 April 2013, Gregory CLEMENT wrote: >> From: Lior Amsalem >> >> In order to be able to support he LPAE, the internal registers virtual >> base must be aligned to 2MB. >> >> Signed-off-by: Lior Amsalem >> Signed-off-by: Gregory CLEMENT > > This is a surprising limitation. Can you extend the above text to go into more > detail where that alignment requirement comes from? > The explanation I had was that in LPAE section size is 2MB, in earlyprintk we map the internal registers and it must be section aligned. > Arnd > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com