From mboxrd@z Thu Jan 1 00:00:00 1970 From: prashantsmailcenter@gmail.com (Prashant Bhole) Date: Wed, 24 Feb 2010 15:08:38 +0530 Subject: large page support for IOP331 In-Reply-To: <20100224091111.GA7598@n2100.arm.linux.org.uk> References: <9ff69a5d1002240100r708381ceha1ca29f2bd6f18b@mail.gmail.com> <20100224091111.GA7598@n2100.arm.linux.org.uk> Message-ID: <9ff69a5d1002240138r6f7089c0o670f856a4ab3536f@mail.gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Feb 24, 2010 at 2:41 PM, Russell King - ARM Linux wrote: > On Wed, Feb 24, 2010 at 02:30:30PM +0530, Prashant Bhole wrote: >> Is there any support of large page for arm architecture? > > The short answer is no. > > The long answer is that to have 16K pages, it causes bigger problems > with the 2nd level page tables, which from the hardware perspective > are only 256 per L1 entry, but are required to be in unique pages. > But we have 64 bit memory subsystem for IOP331 and IOP331 developer's manual: http://download.intel.com/design/iio/manuals/27394202.pdf Page number 452, Table 218 says that we can have 8K and 16K pages. Please correct me if I am wrong -- ~p~r~a~s~h~a~n~t~