On Mon, Jul 15, 2002 at 02:26:27PM -0700, Terry Lambert wrote: > "Stephane E. Potvin" wrote: > > In my porting effort to the ARM platform, I need a function that has the > > functionality of NetBSD's uvm_pglistalloc. This is needed because the L1 > > table of the StrongARM processor is four pages. These pages need to be > > allocated contiguously. I guess that I can probably acheive this goal by > > wrapping something around contigmalloc, but before I do so I just wanted > > to double check that there was no already available facilities that I had > > overlooked. > > How often must this be allocated? > > How many of them are needed? > > If you only need a small set number of them, then they can be > allocated very early on in the system lifetime, which means > you should allocate them in machdep.c, with the rest of the > memory overlay which attempts to make memory in protected mode > look like physical RAM.
I need one per process to hold the L1PT of the process' vm space. I will probably implement a cache to avoid creating/destroying repetitively but I don't think that it's reasonable to preallocate them as it will wire too much physical memory. Steph To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
