On Thu, Sep 4, 2014 at 11:57 AM, Toshi Kani <toshi.kani@xxxxxx> wrote: > On Thu, 2014-09-04 at 11:57 -0700, Andy Lutomirski wrote: >> On Thu, Sep 4, 2014 at 11:35 AM, Toshi Kani <toshi.kani@xxxxxx> wrote: >> > This patch adds set_memory_wt(), set_memory_array_wt(), and >> > set_pages_array_wt() for setting range(s) of memory to WT. >> > >> >> Possibly dumb question: I thought that set_memory_xyz was only for >> RAM. Is that incorrect? > > It works for non-RAM ranges as well. For instance, you can use > set_memory_xyz() to change cache attribute for a non-RAM range mapped by > ioremap_cache(). OK -- I didn't realize that was legal. Do you, by any chance, have a test driver for this? For example, something that lets your reserve some WT memory at boot and mmap it? I wouldn't mind getting some benchmarks, and I can even throw it at the NV-DIMM box that's sitting under my desk :) --Andy -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>