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-rw-r--r--drivers/xen/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index a1ced521cf74..648bcd4195c5 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -178,4 +178,21 @@ config XEN_PRIVCMD
depends on XEN
default m
+config XEN_ACPI_PROCESSOR
+ tristate "Xen ACPI processor"
+ depends on XEN && X86 && ACPI_PROCESSOR
+ default y if (X86_ACPI_CPUFREQ = y || X86_POWERNOW_K8 = y)
+ default m if (X86_ACPI_CPUFREQ = m || X86_POWERNOW_K8 = m)
+ help
+ This ACPI processor uploads Power Management information to the Xen hypervisor.
+
+ To do that the driver parses the Power Management data and uploads said
+ information to the Xen hypervisor. Then the Xen hypervisor can select the
+ proper Cx and Pxx states. It also registers itslef as the SMM so that
+ other drivers (such as ACPI cpufreq scaling driver) will not load.
+
+ To compile this driver as a module, choose M here: the
+ module will be called xen_acpi_processor If you do not know what to choose,
+ select M here. If the CPUFREQ drivers are built in, select Y here.
+
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