On Thu, Oct 22, 2015 at 01:10:21PM -0400, Dan Williams wrote: > Both, __dax_pmd_fault, and clear_pmem() were taking special steps to > clear memory a page at a time to take advantage of non-temporal > clear_page() implementations. However, x86_64 does not use > non-temporal instructions for clear_page(), and arch_clear_pmem() was > always incurring the cost of __arch_wb_cache_pmem(). > > Clean up the assumption that doing clear_pmem() a page at a time is more > performant. > > Cc: Ross Zwisler <ross.zwis...@linux.intel.com> > Reported-by: Dave Hansen <dave.han...@linux.intel.com> > Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
Reviewed-by: Ross Zwisler <ross.zwis...@linux.intel.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
