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From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: joelaf@google.com, linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	suleiman@google.com, kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: [RFC][PATCH 1/4] arm64:kvm: define pv_state SMCCC HV calls
Date: Tue, 21 Jul 2020 13:17:39 +0900
Message-ID: <20200721041742.197354-2-sergey.senozhatsky@gmail.com> (raw)
In-Reply-To: <20200721041742.197354-1-sergey.senozhatsky@gmail.com>

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(+)

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
-- 
2.27.0

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Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-21  4:17 [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted Sergey Senozhatsky
2020-07-21  4:17 ` Sergey Senozhatsky [this message]
2020-07-21  4:17 ` [RFC][PATCH 2/4] arm64: add guest pvstate support Sergey Senozhatsky
2020-07-21  4:17 ` [RFC][PATCH 3/4] arm64: add host " Sergey Senozhatsky
2020-07-21  4:17 ` [RFC][PATCH 4/4] arm64: do not use dummy vcpu_is_preempted() anymore Sergey Senozhatsky
2020-08-17  2:03 ` [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted Sergey Senozhatsky
2020-08-17 12:03   ` yezengruan
2020-08-17 12:25     ` Marc Zyngier
2020-08-17 14:15       ` yezengruan
2020-09-11  8:58       ` Sergey Senozhatsky
2020-09-11  8:46     ` Sergey Senozhatsky

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