arm/arm64: smccc: Make function identifiers an unsigned quantity
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Web: https://git.kernel.org/torvalds/c/ded4c39e93f3b72968fdb79baba27f3b83dad34c Commit: ded4c39e93f3b72968fdb79baba27f3b83dad34c Parent: e78eef554a912ef6c1e0bbf97619dafbeae3339f Refname: refs/heads/master Author: Marc Zyngier <[email protected]> AuthorDate: Tue Feb 6 17:56:18 2018 +0000 Committer: Catalin Marinas <[email protected]> CommitDate: Tue Feb 6 22:54:13 2018 +0000 arm/arm64: smccc: Make function identifiers an unsigned quantity 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: [email protected] Reported-by: Ard Biesheuvel <[email protected]> Acked-by: Ard Biesheuvel <[email protected]> Reviewed-by: Robin Murphy <[email protected]> Tested-by: Ard Biesheuvel <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Catalin Marinas <[email protected]> --- include/linux/arm-smccc.h | 6 ++++-- 1 file 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 -- To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html