[PATCH v2 0/2] arm64: ptdump flush fixes

[Wei-Lin Chang]

Hi,

This series fixes two problems around ptdumps:

1. note_page_flush(), which flushes out the last row of ptdumps, does
   not account for address spacees that have IA < 64. Other than making
   the last region extremely huge, the attributes of the last region
   within the address spaces appear to extend all the way to 1 << 64.

2. KVM/arm64's stage-2 ptdump missed calling note_page_flush().

Please see the patches for more detail.

* Changes from v1 [1]:

  - Instead of manually calling note_page() for flushing, fix
    note_page_flush() so that it ends the ptdump at the end of the
    address space.

  - Changed the start address of the second marker to ULONG_MAX for KVM
    ptdump, so we don't output extra marker names, and advance past the
    end of the marker array.

Thanks!

[1]: https://lore.kernel.org/kvmarm/20260717231233.2299068-1-weilin.chang@xxxxxxx/

Wei-Lin Chang (2):
  arm64: ptdump: Make note_page_flush() range aware
  KVM: arm64: ptdump: Flush the last region

 arch/arm64/kvm/ptdump.c | 16 ++++++++++++----
 arch/arm64/mm/ptdump.c  | 17 ++++++++++++++++-
 2 files changed, 28 insertions(+), 5 deletions(-)


base-commit: 679d7201c1f09e37fa1c12ce28d84079c17fc87f
-- 
2.43.0