Re: Cachable / Non-cachable memory
From: <hidden>
Date: 2000-01-28 11:13:34
In arch/ppc/mm/init.c, the mpc8xx-linux code use map_page(v,p,flags), to set one memory page to some properities,like _NO_CACHE_PAGE,etc. raphael.bossek@solutions4linux.de �� 2000-01-28 17:31:23 ������: linuxppc-embedded@lists.linuxppc.org ������ ��������������/����/��������������/zte_ltd) ������ Cachable / Non-cachable memory Hi, how does Linux specify memory regions as cachable and non- cachable? It is sometimes required to mark mapped memory regions from devices as non-cachable by the MMU so the PowerPC does not tune the write/read accesses. Is there any function or sample driver code in the mpc8xx-linux 2.2.13 code ? cu Raphael Bossek - http://www.solutions4linux.de/powerpc.html ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/