[26-devel] v2.6 performance slowdown on MPC8xx: Measuring TLB cache misses

[Dan Malek]

On Apr 23, 2005, at 1:23 PM, Joakim Tjernlund wrote:

> Does CONFIG_PIN_TLB make a difference?

While looking at the code, I noticed this will only work
if you can map all of the memory with wired TLB entries.
If you have more than 24M of memory, make sure you
enable CONFIG_MODULES to eliminate the TLB miss
optimization that will certainly crash a system by failing
to look up kernel PTEs correctly.

Thanks.


        -- Dan