On Mon, Nov 10, 2014 at 08:55:09AM -0800, David Daney wrote: > Yes, you may be on to something here. Certianly basic huge TLB support must > be in place for TRANSPARENT_HUGEPAGE to work. > > It could be that the Kconfig symbols for the various portions of huge page > support are missing the required dependencies. > > FWIW, I always build with a huge page Kconfig options set. > > I have: > $ grep HUGE .config > CONFIG_SYS_SUPPORTS_HUGETLBFS=y > CONFIG_MIPS_HUGE_TLB_SUPPORT=y > CONFIG_CPU_SUPPORTS_HUGEPAGES=y > CONFIG_TRANSPARENT_HUGEPAGE=y > CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y > # CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set > CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y > CONFIG_HUGETLBFS=y > CONFIG_HUGETLB_PAGE=y > > I suspect that you may not need CONFIG_HUGETLBFS, but CONFIG_HUGETLB_PAGE is > probably essential. IP27 also has NUMA as the only in-tree MIPS system - and it's NUMA support is not in the best support state to say the least. Just an observation - at this point in time there is no obvious connection between either R10000 <-> transparent huge page or NUMA <-> transparent huge page Ralf
