On 08/19/2020 06:30 PM, Aneesh Kumar K.V wrote: > This patch series includes fixes for debug_vm_pgtable test code so that > they follow page table updates rules correctly. The first two patches introduce > changes w.r.t ppc64. The patches are included in this series for completeness. We can > merge them via ppc64 tree if required. > > Hugetlb test is disabled on ppc64 because that needs larger change to satisfy > page table update rules. > > Changes from V1: > * Address review feedback > * drop test specific pfn_pte and pfn_pmd. > * Update ppc64 page table helper to add _PAGE_PTE > > Aneesh Kumar K.V (13): > powerpc/mm: Add DEBUG_VM WARN for pmd_clear > powerpc/mm: Move setting pte specific flags to pfn_pte > mm/debug_vm_pgtable/ppc64: Avoid setting top bits in radom value > mm/debug_vm_pgtables/hugevmap: Use the arch helper to identify huge > vmap support. > mm/debug_vm_pgtable/savedwrite: Enable savedwrite test with > CONFIG_NUMA_BALANCING > mm/debug_vm_pgtable/THP: Mark the pte entry huge before using > set_pmd/pud_at > mm/debug_vm_pgtable/set_pte/pmd/pud: Don't use set_*_at to update an > existing pte entry > mm/debug_vm_pgtable/thp: Use page table depost/withdraw with THP > mm/debug_vm_pgtable/locks: Move non page table modifying test together > mm/debug_vm_pgtable/locks: Take correct page table lock > mm/debug_vm_pgtable/pmd_clear: Don't use pmd/pud_clear on pte entries > mm/debug_vm_pgtable/hugetlb: Disable hugetlb test on ppc64 > mm/debug_vm_pgtable: populate a pte entry before fetching it > > arch/powerpc/include/asm/book3s/64/pgtable.h | 29 +++- > arch/powerpc/include/asm/nohash/pgtable.h | 5 - > arch/powerpc/mm/book3s64/pgtable.c | 2 +- > arch/powerpc/mm/pgtable.c | 5 - > include/linux/io.h | 12 ++ > mm/debug_vm_pgtable.c | 151 +++++++++++-------- > 6 files changed, 127 insertions(+), 77 deletions(-) > Changes proposed here will impact other enabled platforms as well. Adding the following folks and mailing lists, and hoping to get a broader review and test coverage. Please do include them in the next iteration as well. + linux-arm-kernel@xxxxxxxxxxxxxxxxxxx + linux-s390@xxxxxxxxxxxxxxx + linux-snps-arc@xxxxxxxxxxxxxxxxxxx + x86@xxxxxxxxxx + linux-arch@xxxxxxxxxxxxxxx + Gerald Schaefer <gerald.schaefer@xxxxxxxxxx> + Christophe Leroy <christophe.leroy@xxxxxx> + Christophe Leroy <christophe.leroy@xxxxxxxxxx> + Vineet Gupta <vgupta@xxxxxxxxxxxx> + Mike Rapoport <rppt@xxxxxxxxxxxxx> + Qian Cai <cai@xxxxxx>
