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[RFC,1/4] arm64:kvm: define pv_state SMCCC HV calls

Message ID 20200721041742.197354-2-sergey.senozhatsky@gmail.com (mailing list archive)
State New, archived
Headers show
Series arm64:kvm: teach guest sched that VCPUs can be preempted | expand

Commit Message

Sergey Senozhatsky July 21, 2020, 4:17 a.m. UTC 
These will be used later on to configure and enable vCPU
PV-state support, which is needed for vcpu_is_preempted().

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
 include/linux/arm-smccc.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
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Patch

diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 15c706fb0a37..cba054662692 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -99,6 +99,24 @@ 
 			   ARM_SMCCC_OWNER_STANDARD_HYP,	\
 			   0x21)
 
+#define ARM_SMCCC_HV_PV_STATE_FEATURES				\
+	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,			\
+			   ARM_SMCCC_SMC_64,			\
+			   ARM_SMCCC_OWNER_STANDARD_HYP,	\
+			   0x22)
+
+#define ARM_SMCCC_HV_PV_STATE_INIT				\
+	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,			\
+			   ARM_SMCCC_SMC_64,			\
+			   ARM_SMCCC_OWNER_STANDARD_HYP,	\
+			   0x23)
+
+#define ARM_SMCCC_HV_PV_STATE_RELEASE				\
+	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,			\
+			   ARM_SMCCC_SMC_64,			\
+			   ARM_SMCCC_OWNER_STANDARD_HYP,	\
+			   0x24)
+
 /*
  * Return codes defined in ARM DEN 0070A
  * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C