• Paul Burton's avatar
    MIPS: CPS: drop .set mips64r2 directives · f3575e23
    Paul Burton authored
    Commit 977e043d ("MIPS: kernel: cps-vec: Replace mips32r2 ISA level
    with mips64r2") leads to .set mips64r2 directives being present in 32
    bit (ie. CONFIG_32BIT=y) kernels. This is incorrect & leads to MIPS64
    instructions being emitted by the assembler when expanding
    pseudo-instructions. For example the "move" instruction can legitimately
    be expanded to a "daddu". This causes problems when the kernel is run on
    a MIPS32 CPU, as CONFIG_32BIT kernels of course often are...
    
    Fix this by dropping the .set <ISA> directives entirely now that Kconfig
    should be ensuring that kernels including this code are built with a
    suitable -march= compiler flag.
    Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
    Cc: Markos Chandras <markos.chandras@imgtec.com>
    Cc: James Hogan <james.hogan@imgtec.com>
    Cc: <stable@vger.kernel.org> # 3.16+
    Cc: linux-mips@linux-mips.org
    Cc: linux-kernel@vger.kernel.org
    Patchwork: https://patchwork.linux-mips.org/patch/10869/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    f3575e23
cps-vec.S 9.77 KB