Michael Ellerman <mich...@ellerman.id.au> writes: > On Thu, Apr 04, 2013 at 11:27:44AM +0530, Aneesh Kumar K.V wrote: >> From: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> >> >> We allocate one page for the last level of linux page table. With THP and >> large page size of 16MB, that would mean we are wasting large part >> of that page. To map 16MB area, we only need a PTE space of 2K with 64K >> page size. This patch reduce the space wastage by sharing the page >> allocated for the last level of linux page table with multiple pmd >> entries. We call these smaller chunks PTE page fragments and allocated >> page, PTE page. > > This is not compiling for me: > > arch/powerpc/mm/mmu_context_hash64.c:118:3: error: implicit declaration of > function 'reset_page_mapcount' >
can you share the .config ? I have the git tree at git://github.com/kvaneesh/linux.git ppc64-thp-7 -aneesh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
