Re: [PATCH v2 10/10] powerpc/mm/slice: use the dynamic high slice size to limit bitmap operations
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2018-03-07 10:45:42
Nicholas Piggin [off-list ref] writes:
On Wed, 7 Mar 2018 11:37:18 +1000 Nicholas Piggin [off-list ref] wrote:quoted
The number of high slices a process might use now depends on its address space size, and what allocation address it has requested. This patch uses that limit throughout call chains where possible, rather than use the fixed SLICE_NUM_HIGH for bitmap operations. This saves some cost for processes that don't use very large address spaces. Perormance numbers aren't changed significantly, this may change with larger address spaces or different mmap access patterns that require more slice mask building.Ignore this patch in the series. I didn't intend to send it.
Oops :D I'll drop it and rebuild. cheers kisskb: Failed 206/268 http://kisskb.ellerman.id.au/kisskb/head/82bc47f26969f6ed290cda529b9893941923c0f4/ Failed: powerpc-next/pseries_le_defconfig+NO_NUMA/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296349/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_le_defconfig+NO_SPLPAR/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296347/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+NO_SPLPAR/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296346/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+NO_SPLPAR/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296345/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pmac32_defconfig+KVM/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296343/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] Failed: powerpc-next/allmodconfig+64K_PAGES/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296342/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/allmodconfig+64K_PAGES/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296341/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/skiroot_defconfig/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296339/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powernv_defconfig+NO_NUMA/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296338/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powernv_defconfig+STRICT_RWX/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296337/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/corenet64_smp_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296332/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/corenet32_smp_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296331/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/ppc64_defconfig+NO_HUGETLB/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296322/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_KVM/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296321/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+NO_MEMORY_HOTPLUG/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296319/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powerpc-randconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296317/log/) /kisskb/src/arch/powerpc/kernel/watchdog.c:168:3: error: implicit declaration of function 'smp_flush_nmi_ipi' [-Werror=implicit-function-declaration] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/kernel/watchdog.c:166:4: error: implicit declaration of function 'smp_send_nmi_ipi' [-Werror=implicit-function-declaration] /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_TM/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296316/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+NO_MEMORY_HOTREMOVE/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296292/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/mpc85xx_smp_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296256/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/ppc64_defconfig+UP/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296248/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_ALTIVEC/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296247/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powerpc-allyesconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296246/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powerpc-allmodconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296243/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296239/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/mpc85xx_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296233/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/pasemi_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296230/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ps3_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296229/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/maple_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296228/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/g5_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296227/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/cell_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296225/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296222/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powernv_defconfig/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296221/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_ALTIVEC/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296219/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? /kisskb/src/arch/powerpc/kvm/powerpc.c:1611:1: error: label 'out' defined but not used [-Werror=unused-label] Failed: powerpc-next/corenet64_smp_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296213/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:3: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/corenet32_smp_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296212/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:3: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/pseries_defconfig+FA_DUMP/powerpc-5.3 (http://kisskb.ellerman.id.au/kisskb/buildresult/13296201/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_HUGETLB/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296200/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/allmodconfig+ppc64le/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296199/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+FA_DUMP/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296198/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64le_defconfig+NO_KVM/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296197/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_KVM/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296196/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_le_defconfig/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296195/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64le_defconfig/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296194/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_TM/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296193/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+UP/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296181/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig+NO_RADIX/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296177/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig+NO_MEMORY_HOTPLUG/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296175/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powernv_defconfig+NO_RADIX/ppc64le (http://kisskb.ellerman.id.au/kisskb/buildresult/13296173/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/maple_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296170/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/mpc85xx_smp_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296120/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:3: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/powerpc-randconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296110/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/mpc85xx_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296105/log/) /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:3: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] Failed: powerpc-next/powerpc-allyesconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296104/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/powerpc-allmodconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296103/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pasemi_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296101/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ppc64_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296100/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/ps3_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296096/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/g5_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296095/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/cell_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296093/log/) /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64? Failed: powerpc-next/pseries_defconfig/powerpc (http://kisskb.ellerman.id.au/kisskb/buildresult/13296091/log/) /kisskb/src/arch/powerpc/kvm/powerpc.c:1361:2: error: 'emulated' may be used uninitialized in this function [-Werror=uninitialized] /kisskb/src/arch/powerpc/mm/slice.c:81:2: error: #error XXX: bitmap_zero with non-const size? Good code? /kisskb/src/arch/powerpc/mm/slice.c:660:2: error: #error XXX: are we sure high_slices is > 0 here when SLICE_NUM_HIGH? Perhaps not for 32-bit tasks on 64?