Linh Dang wrote: > Dan Malek <dan at embeddededge.com> wrote: > >>On Jul 27, 2004, at 1:34 PM, Dang, Linh [CAR:2X23:EXCH] wrote: >> >>>>cat /proc/ppc_htab >>> >>>PTE Hash Table Information >> >>You misunderstand. This is the PPC Hash table, not Linux PTEs. There >>are lots and lots and lots of Linux PTEs are are eventually loaded >>into the PPC hash table for the processor to fetch. > > Thanx for pointing that out. I have to dig further. I guess it would > come down to how much pressure using pages for mapping our asics > (instead of BATs) would have on the TLBs.
Maybe you want to have a look at the book "Understanding the Linux Virtual Memory Manager". Though clearly not PowerPC-specific (as always this book, too, focuses on the x86), it's a recommended buy for understanding how paging etc. works with Linux. It does explain the non-architecture-specific part rather thoroughly. Then, together with the "Programming Environments Manual For 32-Bit Implementations of the PowerPC Architecture" (from Motorola), this should give you a good understanding of what's going on, and how Linux is handling this stuff. With kind regards, Oliver Korpilla ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
