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| author | Steven Price <steven.price@arm.com> | 2019-10-21 18:28:16 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2019-10-21 21:20:27 +0300 |
| commit | b48c1a45a190898103cec28771efc399fd65a05a (patch) | |
| tree | aeaa6b765b8d6a0c12de852832a0d73a51b1ac1f /include | |
| parent | 55009c6ed2d24fc0f5521ab2482f145d269389ea (diff) | |
| download | linux-b48c1a45a190898103cec28771efc399fd65a05a.tar.xz | |
KVM: arm64: Implement PV_TIME_FEATURES call
This provides a mechanism for querying which paravirtualized time
features are available in this hypervisor.
Also add the header file which defines the ABI for the paravirtualized
time features we're about to add.
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/arm-smccc.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index df01a8579034..92e0046ce7a7 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -45,6 +45,7 @@ #define ARM_SMCCC_OWNER_SIP 2 #define ARM_SMCCC_OWNER_OEM 3 #define ARM_SMCCC_OWNER_STANDARD 4 +#define ARM_SMCCC_OWNER_STANDARD_HYP 5 #define ARM_SMCCC_OWNER_TRUSTED_APP 48 #define ARM_SMCCC_OWNER_TRUSTED_APP_END 49 #define ARM_SMCCC_OWNER_TRUSTED_OS 50 @@ -318,5 +319,18 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, #define SMCCC_RET_NOT_SUPPORTED -1 #define SMCCC_RET_NOT_REQUIRED -2 +/* Paravirtualised time calls (defined by ARM DEN0057A) */ +#define ARM_SMCCC_HV_PV_TIME_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x20) + +#define ARM_SMCCC_HV_PV_TIME_ST \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x21) + #endif /*__ASSEMBLY__*/ #endif /*__LINUX_ARM_SMCCC_H*/ |