[PATCH v1 04/14] RISC-V: paravirt: Add kconfigs

[Andrew Jones <ajones@ventanamicro.com>]

Now that we can support steal-time accounting, add the kconfig
knobs allowing it to be enabled.

Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
 arch/riscv/Kconfig | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 29f0f8fcb5c2..caf6f5ea578b 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -726,6 +726,25 @@ config COMPAT
 
 	  If you want to execute 32-bit userspace applications, say Y.
 
+config PARAVIRT
+	bool "Enable paravirtualization code"
+	depends on RISCV_SBI
+	help
+	  This changes the kernel so it can modify itself when it is run
+	  under a hypervisor, potentially improving performance significantly
+	  over full virtualization.
+
+config PARAVIRT_TIME_ACCOUNTING
+	bool "Paravirtual steal time accounting"
+	depends on PARAVIRT
+	help
+	  Select this option to enable fine granularity task steal time
+	  accounting. Time spent executing other tasks in parallel with
+	  the current vCPU is discounted from the vCPU power. To account for
+	  that, there can be a small performance impact.
+
+	  If in doubt, say N here.
+
 config RELOCATABLE
 	bool "Build a relocatable kernel"
 	depends on MMU && 64BIT && !XIP_KERNEL
-- 
2.43.0


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv