ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned
authorNick Desaulniers <ndesaulniers@google.com>
Mon, 4 Oct 2021 17:03:28 +0000 (18:03 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 2 Nov 2021 18:48:18 +0000 (19:48 +0100)
commit6ad8bbc9d301145335c35f29ed7878b61b0ad81f
tree450e1a148753cc90d226ee735463175eb7cae8f8
parent3ceaa85c331d30752af3b88d280cc1bcaee2eb27
ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned

commit e6a0c958bdf9b2e1b57501fc9433a461f0a6aadd upstream.

A kernel built with CONFIG_THUMB2_KERNEL=y and using clang as the
assembler could generate non-naturally-aligned v7wbi_tlb_fns which
results in a boot failure. The original commit adding the macro missed
the .align directive on this data.

Link: https://github.com/ClangBuiltLinux/linux/issues/1447
Link: https://lore.kernel.org/all/0699da7b-354f-aecc-a62f-e25693209af4@linaro.org/
Debugged-by: Ard Biesheuvel <ardb@kernel.org>
Debugged-by: Nathan Chancellor <nathan@kernel.org>
Debugged-by: Richard Henderson <richard.henderson@linaro.org>
Fixes: 66a625a88174 ("ARM: mm: proc-macros: Add generic proc/cache/tlb struct definition macros")
Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm/mm/proc-macros.S