Hi folks, This series of patches reworks the sparc32 page-table layout so that 'pmd_t' no longer embeds an array of 16 physical pointers, which means that we can finally enforce atomicity for accesses made using READ_ONCE(): https://lkml.kernel.org/r/20200123153341.19947-1-will@xxxxxxxxxx I've tested this with QEMU by booting Debian Etch. Please take a look! Cheers, Will Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> Cc: sparclinux@xxxxxxxxxxxxxxx --->8 Will Deacon (4): sparc32: mm: Fix argument checking in __srmmu_get_nocache() sparc32: mm: Restructure sparc32 MMU page-table layout sparc32: mm: Change pgtable_t type to pte_t * instead of struct page * sparc32: mm: Reduce allocation size for PMD and PTE tables arch/sparc/include/asm/page_32.h | 12 ++-- arch/sparc/include/asm/pgalloc_32.h | 11 ++-- arch/sparc/include/asm/pgtable_32.h | 40 +++++++----- arch/sparc/include/asm/pgtsrmmu.h | 36 +---------- arch/sparc/include/asm/viking.h | 5 +- arch/sparc/kernel/head_32.S | 8 +-- arch/sparc/mm/hypersparc.S | 3 +- arch/sparc/mm/srmmu.c | 95 ++++++++++------------------- arch/sparc/mm/viking.S | 5 +- 9 files changed, 85 insertions(+), 130 deletions(-) -- 2.20.1
