16KB page size solution may sometime be a solution: 1) in microcontroller environment then small pages have advantage in small applications world. 2) some kernel drivers may not fit well a different page size, especially if HW has an embedded memory translation: GPU, video/audio decoders, supplement accelerators. 3) finally, somebody can increase cache size faster than page size, this race never finishes. Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote: On Sat, Aug 02, 2014 at 05:11:37AM +0400, Max Filippov wrote: > this series adds mapping color control to the generic kmap code, allowing > architectures with aliasing VIPT cache to use high memory. There's also > use example of this new interface by xtensa. I haven't actually ported this to MIPS but it certainly appears to be the right framework to get highmem aliases handled on MIPS, too. Though I still consider increasing PAGE_SIZE to 16k the preferable solution because it will entirly do away with cache aliases. Thanks, Ralf
