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[RFC,v3,07/16] KVM: arm64: Define SPE data structure for each VCPU

Message ID 20201027172705.15181-8-alexandru.elisei@arm.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Add Statistical Profiling Extension (SPE) support | expand

Commit Message

Alexandru Elisei Oct. 27, 2020, 5:26 p.m. UTC 
From: Sudeep Holla <sudeep.holla@arm.com>

Define basic struct for supporting SPE for guest VCPUs.

[Andrew M: Add irq_level, rename irq to irq_num for kvm_spe ]
[Alexandru E: Reworked patch ]

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arch/arm64/include/asm/kvm_host.h | 2 ++
 include/kvm/arm_spe.h             | 9 +++++++++
 2 files changed, 11 insertions(+)
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Patch

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 43eee197764f..5b68c06930c6 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -35,6 +35,7 @@ 
 #include <kvm/arm_vgic.h>
 #include <kvm/arm_arch_timer.h>
 #include <kvm/arm_pmu.h>
+#include <kvm/arm_spe.h>
 
 #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS
 
@@ -329,6 +330,7 @@  struct kvm_vcpu_arch {
 	struct vgic_cpu vgic_cpu;
 	struct arch_timer_cpu timer_cpu;
 	struct kvm_pmu pmu;
+	struct kvm_spe_cpu spe_cpu;
 
 	/*
 	 * Anything that is not used directly from assembly code goes
diff --git a/include/kvm/arm_spe.h b/include/kvm/arm_spe.h
index db51ef15bf45..46ec447ed013 100644
--- a/include/kvm/arm_spe.h
+++ b/include/kvm/arm_spe.h
@@ -12,8 +12,17 @@  static inline bool kvm_arm_supports_spe(void)
 	return cpus_have_final_cap(ARM64_SPE);
 }
 
+struct kvm_spe_cpu {
+	int irq_num; 		/* Guest visibile INTID */
+	bool irq_level; 	/* 'true' if interrupt is asserted to the VGIC */
+	bool initialized; 	/* Feature is initialized on VCPU */
+};
+
 #else
 #define kvm_arm_supports_spe()	false
 
+struct kvm_spe_cpu {
+};
+
 #endif /* CONFIG_KVM_ARM_SPE */
 #endif /* __ASM_ARM_KVM_SPE_H */