diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-06 17:56:18 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-16 20:06:44 +0100 |
| commit | 5fa82723fa1b35fcf37914925cb25783529653eb (patch) | |
| tree | 0a529437f3ce88ffa92f61c9f07f242501b1fe22 /include/linux | |
| parent | eadba98b0dd90bb9e5a814115907cc00b4a8c590 (diff) | |
arm/arm64: smccc: Make function identifiers an unsigned quantity
Commit ded4c39e93f3 upstream.
Function identifiers are a 32bit, unsigned quantity. But we never
tell so to the compiler, resulting in the following:
4ac: b26187e0 mov x0, #0xffffffff80000001
We thus rely on the firmware narrowing it for us, which is not
always a reasonable expectation.
Cc: stable@vger.kernel.org
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/arm-smccc.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index e1ef944ef1da..dd44d8458c04 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -14,14 +14,16 @@ #ifndef __LINUX_ARM_SMCCC_H #define __LINUX_ARM_SMCCC_H +#include <uapi/linux/const.h> + /* * This file provides common defines for ARM SMC Calling Convention as * specified in * http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html */ -#define ARM_SMCCC_STD_CALL 0 -#define ARM_SMCCC_FAST_CALL 1 +#define ARM_SMCCC_STD_CALL _AC(0,U) +#define ARM_SMCCC_FAST_CALL _AC(1,U) #define ARM_SMCCC_TYPE_SHIFT 31 #define ARM_SMCCC_SMC_32 0 |