On Fri, Jun 22, 2012 at 7:11 PM, Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote: > On Fri, Jun 22, 2012 at 06:55:40PM +0800, Huacai Chen wrote: > >> > btw, would it be a good idea to use uncached accelerated instead ? >> I have tried uncached accelerated, there will be random points in the >> monitor, it seems a hw issue... > > Have you flushed the pages from memory before switching their cache mode > to uncached accelerated? The MIPS architecture defines the result of > mixing cache modes as UNPREDICTABLE so be careful to flush caches before > switching cache mode of a page. Not because of flushing, CPU designing team told us a method but very complex, and that method will cause other performance drop. So, we won't use uncached accelerate mode. > > Ralf
