Hi, here is the next post of this series with these changes to the first version: - Rebased to v5.7-rc5 - As a result of the rebase, also removed the vmalloc_sync_mappings() call from tracing code - Added a comment that we rely on the compiler optimizing calls to arch_syn_kernel_mappings() away when ARCH_PAGE_TABLE_SYNC_MASK is 0 The first version can be found here: https://lore.kernel.org/lkml/20200508144043.13893-1-joro@xxxxxxxxxx/ The cover letter of the first post also has more details on the motivation for this patch-set. Please review. Regards, Joerg Joerg Roedel (7): mm: Add functions to track page directory modifications mm/vmalloc: Track which page-table levels were modified mm/ioremap: Track which page-table levels were modified x86/mm/64: Implement arch_sync_kernel_mappings() x86/mm/32: Implement arch_sync_kernel_mappings() mm: Remove vmalloc_sync_(un)mappings() x86/mm: Remove vmalloc faulting arch/x86/include/asm/pgtable-2level_types.h | 2 + arch/x86/include/asm/pgtable-3level_types.h | 2 + arch/x86/include/asm/pgtable_64_types.h | 2 + arch/x86/include/asm/switch_to.h | 23 --- arch/x86/kernel/setup_percpu.c | 6 +- arch/x86/mm/fault.c | 176 +------------------- arch/x86/mm/init_64.c | 5 + arch/x86/mm/pti.c | 8 +- drivers/acpi/apei/ghes.c | 6 - include/asm-generic/5level-fixup.h | 5 +- include/asm-generic/pgtable.h | 23 +++ include/linux/mm.h | 46 +++++ include/linux/vmalloc.h | 18 +- kernel/notifier.c | 1 - kernel/trace/trace.c | 12 -- lib/ioremap.c | 46 +++-- mm/nommu.c | 12 -- mm/vmalloc.c | 109 +++++++----- 18 files changed, 204 insertions(+), 298 deletions(-) -- 2.17.1
