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| author |   Ard Biesheuvel <ardb@kernel.org> | 2022-05-31 09:49:24 +0100 |
|---|---|---|
| committer |   Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-07-14 13:19:51 +0100 |
| commit | 29589ca09a74cfc0c50ad002e298bf4b8e69e0bd (patch) | |
| tree | d0b80ae2b5e94807cbf66188bd8da3bf5fb2b252 /arch/arm/kernel/entry-common.S | |
| parent | ARM: 9207/1: amba: fix refcount underflow if amba_device_add() fails (diff) | |
| download | linux-dev-29589ca09a74cfc0c50ad002e298bf4b8e69e0bd.tar.xz linux-dev-29589ca09a74cfc0c50ad002e298bf4b8e69e0bd.zip | |
ARM: 9208/1: entry: add .ltorg directive to keep literals in range
LKP reports a build issue on Clang, related to a literal load of
__current issued through the ldr_va macro. This turns out to be due to
the fact that group relocations are disabled when CONFIG_COMPILE_TEST=y,
which means that the ldr_va macro resolves to a pair of LDR
instructions, the first one being a literal load issued too far from its
literal pool.
Due to the introduction of a couple of new uses of this macro in commit
508074607c7b95b2 ("ARM: 9195/1: entry: avoid explicit literal loads"),
the literal pools end up getting rearranged in a way that causes the
literal for __current to go out of range. Let's fix this up by putting a
.ltorg directive in a suitable place in the code.
Link: https://lore.kernel.org/all/202205290805.1vZLAr36-lkp@intel.com/
Fixes: 508074607c7b95b2 ("ARM: 9195/1: entry: avoid explicit literal loads")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 7aa3ded4af92..6a447ac67d80 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -302,6 +302,7 @@ local_restart: b ret_fast_syscall #endif ENDPROC(vector_swi) + .ltorg /* * This is the really slow path. We're going to be doing |