diff mbox series

[RFC,v5,13/38] KVM: arm64: Add CONFIG_KVM_ARM_SPE Kconfig option

Message ID 20211117153842.302159-14-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 Nov. 17, 2021, 3:38 p.m. UTC 
Add a new configuration option that will be used for KVM SPE emulation.
CONFIG_KVM_ARM_SPE depends on the SPE driver being builtin because:

1. The cpumask of physical CPUs that support SPE will be used by KVM to
   emulate SPE on heterogeneous systems.

2. KVM will rely on the SPE driver enabling the SPE interrupt at the GIC
   level.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arch/arm64/kvm/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 8ffcbe29395e..9c8c8424ab58 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -54,4 +54,12 @@  config NVHE_EL2_DEBUG
 
 	  If unsure, say N.
 
+config KVM_ARM_SPE
+	bool "Virtual Statistical Profiling Extension (SPE) support"
+	depends on KVM && ARM_SPE_PMU=y
+	default y
+	help
+	  Adds support for Statistical Profiling Extension (SPE) in virtual
+	  machines.
+
 endif # VIRTUALIZATION