[PATCH master v2 0/3] Fix GCC 11 THUMB2 relocate_to_current_adr miscompile

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Since a8b788ba61eb ("relocate_to_current_adr: hang directly on error instead
of panic()"),  GCC can prove that variables aren't supposed to overlap and as
such it generated code than readded get_runtime_offset() on top of an
already relocated linker-defined variable's address.
See PATCH 2/3 for a disassembly of the affected code. Board code can
be similarly micompiled, but that's a fix for another day.

Ahmad Fatoum (3):
  include: asm-generic: reloc: implement runtime_address()
  ARM: cpu: add compiler barrier around unrelocated access
  RISC-V: add compiler barriers around unrelocated accesses

 arch/arm/cpu/common.c             | 15 ++++---
 arch/arm/cpu/uncompress.c         |  4 +-
 arch/riscv/boot/uncompress.c      |  4 +-
 arch/riscv/include/asm/sections.h |  3 +-
 arch/riscv/lib/reloc.c            | 10 +++--
 include/asm-generic/reloc.h       | 69 +++++++++++++++++++++++++++++++
 6 files changed, 91 insertions(+), 14 deletions(-)

-- 
2.30.2