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Subject[PATCH v3 0/3] fix free pmd/pte page handlings on x86
Date
This series fixes two issues in the x86 ioremap free page handlings
for pud/pmd mappings.

Patch 01 fixes BUG_ON on x86-PAE reported by Joerg. It disables
the free page handling on x86-PAE.

Patch 02-03 fixes a possible issue with speculation which can cause
stale page-directory cache.
- Patch 02 is from Chintan's v9 01/04 patch [1], which adds a new arg
'addr', with my merge change to patch 01.
- Patch 03 adds a TLB purge (INVLPG) to purge page-structure caches
that may be cached by speculation. See the patch descriptions for
more detal.

[1] https://patchwork.kernel.org/patch/10371015/

v3:
- Fixed a build error in v2.

v2:
- Reordered patch-set, so that patch 01 can be applied independently.
- Added a NULL pointer check for the page alloc in patch 03.

---
Toshi Kani (2):
1/3 x86/mm: disable ioremap free page handling on x86-PAE
3/3 x86/mm: add TLB purge to free pmd/pte page interfaces

Chintan Pandya (1):
2/3 ioremap: Update pgtable free interfaces with addr

---
arch/arm64/mm/mmu.c | 4 +--
arch/x86/mm/pgtable.c | 59 +++++++++++++++++++++++++++++++++++++------
include/asm-generic/pgtable.h | 8 +++---
lib/ioremap.c | 4 +--
4 files changed, 59 insertions(+), 16 deletions(-)

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