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| author | Sathvika Vasireddy <sv@linux.ibm.com> | 2022-11-14 18:57:40 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-11-15 10:11:47 +0100 |
| commit | 01f2cf0b990e58ae89142f57c7e02d33621311d2 (patch) | |
| tree | b6b766ec870baff1854093ea3295ed5517f7da83 /arch | |
| parent | powerpc: Fix __WARN_FLAGS() for use with Objtool (diff) | |
| download | linux-01f2cf0b990e58ae89142f57c7e02d33621311d2.tar.xz linux-01f2cf0b990e58ae89142f57c7e02d33621311d2.zip | |
powerpc: Override __ALIGN and __ALIGN_STR macros
In a subsequent patch, we would want to annotate powerpc assembly functions
with SYM_FUNC_START_LOCAL macro. This macro depends on __ALIGN macro.
The default expansion of __ALIGN macro is:
#define __ALIGN .align 4,0x90
So, override __ALIGN and __ALIGN_STR macros to use the same alignment as
that of the existing _GLOBAL macro. Also, do not pad with 0x90, because
repeated 0x90s are not a nop or trap on powerpc.
Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221114175754.1131267-3-sv@linux.ibm.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/linkage.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/linkage.h b/arch/powerpc/include/asm/linkage.h index b71b9582e754..b88d1d2cf304 100644 --- a/arch/powerpc/include/asm/linkage.h +++ b/arch/powerpc/include/asm/linkage.h @@ -4,6 +4,9 @@ #include <asm/types.h> +#define __ALIGN .align 2 +#define __ALIGN_STR ".align 2" + #ifdef CONFIG_PPC64_ELF_ABI_V1 #define cond_syscall(x) \ asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \ |