[PATCH master 0/8] ARM: mmu: fix hang reserving memory after text area

[Ahmad Fatoum <a.fatoum@barebox.org>]

The loop remapping the memory banks looks at reserved memory
regions and then maps everything eXecute Never up to the start of the
region. If the region happens to be in the same bank as the text area
and it comes after it, this means the text area is temporarily mapped
eXecute Never, while barebox is running from it, which results in a
hang.

Fix this by remapping only after both reserved memory regions and text
area have been considered.

This series is a rebase of
https://lore.barebox.org/barebox/aJHagEVHUpHjALa2@pengutronix.de/T/#t

Ahmad Fatoum (8):
  partition: rename region_overlap_end to region_overlap_end_inclusive
  partition: define new region_overlap_end_exclusive helper
  ARM: mmu: skip TLB invalidation if remapping zero bytes
  ARM64: mmu: pass map type not PTE flags to early_remap_range
  ARM: mmu: provide setup_trap_pages for both 32- and 64-bit
  ARM: mmu: setup trap pages before remapping R/O
  ARM: mmu: share common memory bank remapping code
  ARM: mmu: fix hang reserving memory after text area

 arch/arm/cpu/mmu-common.c | 69 +++++++++++++++++++++++++++++++++++++++
 arch/arm/cpu/mmu-common.h |  1 +
 arch/arm/cpu/mmu_32.c     | 44 ++-----------------------
 arch/arm/cpu/mmu_64.c     | 51 +++++++----------------------
 commands/iomemport.c      |  2 +-
 common/partitions.c       |  6 ++--
 include/range.h           | 30 ++++++++++++++---
 7 files changed, 114 insertions(+), 89 deletions(-)

-- 
2.39.5