[PATCH 01/14] arm/arm64: smccc: Add SMCCC-specific return codes
From: mark.rutland@arm.com (Mark Rutland)
Date: 2018-05-24 10:55:40
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On Tue, May 22, 2018 at 04:06:35PM +0100, Marc Zyngier wrote:
We've so far used the PSCI return codes for SMCCC because they were extremely similar. But with the new ARM DEN 0070A specification, "NOT_REQUIRED" (-2) is clashing with PSCI's "PSCI_RET_INVALID_PARAMS". Let's bite the bullet and add SMCCC specific return codes. Users can be repainted as and when required. Acked-by: Will Deacon <redacted> Signed-off-by: Marc Zyngier <redacted>
Reviewed-by: Mark Rutland <mark.rutland@arm.com> Mark.
quoted hunk ↗ jump to hunk
--- include/linux/arm-smccc.h | 5 +++++ 1 file changed, 5 insertions(+)diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index a031897fca76..c89da86de99f 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h@@ -291,5 +291,10 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, */ #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__) +/* Return codes defined in ARM DEN 0070A */ +#define SMCCC_RET_SUCCESS 0 +#define SMCCC_RET_NOT_SUPPORTED -1 +#define SMCCC_RET_NOT_REQUIRED -2 + #endif /*__ASSEMBLY__*/ #endif /*__LINUX_ARM_SMCCC_H*/-- 2.14.2 _______________________________________________ kvmarm mailing list kvmarm at lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm