From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <387F50F9.641B80EF@netx4.com> Date: Fri, 14 Jan 2000 11:38:17 -0500 From: Dan Malek MIME-Version: 1.0 To: Christer Weinigel CC: linuxppc-embedded@lists.linuxppc.org Subject: Re: 16kb pages on MPC850 References: <200001140318.EAA16881@dumburk.cendio.se> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Christer Weinigel wrote: > Or does anybody have better ideas on how to improve the performance of > Linux on a MPC850? There are lots of MMU related performance enhancements on my list. You touched on just a couple, although 16K pages are probably not the way to go. The 8M mapping for the kernel is one way to go, although you have to be careful about the dynamic VM allocator alignment, and it presents a further problem for loadable modules. Now that the VM changes in the 2.3.xx have settled down, I am going to start working on two projects. One is the larger 8M mapping for the kernel, and the second is to further modify the Linux generic functions so they don't assume the pgd and pmd are pointers. I can then significantly reduce the amount of code in the page fault handlers. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/