[PATCH 0/4] fixes for data/bss linear alias unmap series

[Ard Biesheuvel]

From: Ard Biesheuvel <ardb@xxxxxxxxxx>

Fixes for the data/bss linear alias unmap series:

- Fix KASAN related issue reported by Mark, by moving all KASAN page
  tables out of BSS [on arm64], not just the ones defined under
  arch/arm64

- Fix two issues spotted by Sashiko

- Fix the CKI reported WARN() splat on BBML2_NOABORT systems that try to
  split block mappings too early.

Cc: Kevin Brodsky <kevin.brodsky@xxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>

Ard Biesheuvel (4):
  arm64: Move generic KASAN page tables out of BSS too
  arm64: Avoid double evaluation of __ptep_get()
  arm64: mte: Disregard the zero page explicitly for manipulating tags
  arm64: mm: Defer remap of linear alias of data/bss

 arch/arm64/include/asm/linkage.h |  2 ++
 arch/arm64/include/asm/mmu.h     |  2 --
 arch/arm64/include/asm/mte.h     |  5 +++++
 arch/arm64/include/asm/pgtable.h |  4 ----
 arch/arm64/kernel/vmlinux.lds.S  |  8 ++++----
 arch/arm64/mm/fixmap.c           |  6 +++---
 arch/arm64/mm/kasan_init.c       |  2 +-
 arch/arm64/mm/mmu.c              | 20 +++++++++++++-------
 include/linux/linkage.h          |  4 ++++
 mm/kasan/init.c                  | 10 +++++-----
 10 files changed, 37 insertions(+), 26 deletions(-)


base-commit: 63e0b6a5b6934d6a919d1c65ea185303200a1874
-- 
2.54.0.1013.g208068f2d8-goog