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    Subject[PATCH v2 02/16] powerpc: override __ALIGN() and __ALIGN_STR() macros
    Date
    Powerpc instructions must be word-aligned. Currently,
    there is an alignment of 16 bytes (by default), and it is
    much more than what is required for powerpc (4 bytes).

    The default expansion of __ALIGN() macro is:
    #define __ALIGN .align 4,0x90

    Since Powerpc Linux does not require a 16 byte alignment,
    override __ALIGN() and __ALIGN_STR() macros to use required
    4 byte alignment.

    Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
    ---
    arch/powerpc/include/asm/linkage.h | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/arch/powerpc/include/asm/linkage.h b/arch/powerpc/include/asm/linkage.h
    index b71b9582e754..8df88fe61438 100644
    --- a/arch/powerpc/include/asm/linkage.h
    +++ b/arch/powerpc/include/asm/linkage.h
    @@ -2,8 +2,12 @@
    #ifndef _ASM_POWERPC_LINKAGE_H
    #define _ASM_POWERPC_LINKAGE_H

    +#include <linux/stringify.h>
    #include <asm/types.h>

    +#define __ALIGN .align 2
    +#define __ALIGN_STR __stringify(__ALIGN)
    +
    #ifdef CONFIG_PPC64_ELF_ABI_V1
    #define cond_syscall(x) \
    asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \
    --
    2.31.1
    \
     
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