[PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings()

From: Joerg Roedel
Date: Wed May 13 2020 - 11:22:12 EST


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