On 23/06/13 10:57, Hesham Moustafa wrote:
The ARM which I am currently using and have handy seems to support 1MB,
>64K and 4K ranges depending on the TLB table level used. I would be
>surprised if an entry was needed for each page in use.
>
>Yes it ranges in ARM. Last year we implemented two-level page tables with
set of possible page sizes, but it was discarded due to performance issue.
The current libmm/ARM (arm920) code used one level 1 MB sections for
protection. Also Sebastian implemented 1 MB sections for the new realview
BSP.
On ARMv7 there are more options. I used only the 1MiB sections because
this is what the ARM9 based LPC32XX used. We may use larger sections in
the future for ARMv7.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
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E-Mail : sebastian.hu...@embedded-brains.de
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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