ACPI: Kconfig: Provide help text for the ACPI_PRMT option

Commit Message

Rafael J. Wysocki July 1, 2021, 4:34 p.m. UTC

From: Rafael J. Wysocki <[e-mail]>

Add missing help text for CONFIG_ACPI_PRMT.

Fixes: cefc7ca46235 ("ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype")
Reported-by: Borislav Petkov <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>
---
 drivers/acpi/Kconfig |   10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

Index: linux-pm/drivers/acpi/Kconfig
===================================================================
--- linux-pm.orig/drivers/acpi/Kconfig
+++ linux-pm/drivers/acpi/Kconfig
@@ -548,3 +548,13 @@  config ACPI_PRMT
 	bool "Platform Runtime Mechanism Support"
 	depends on EFI && X86_64
 	default y
+	help
+	  Platform Runtime Mechanism (PRM) is a firmware interface exposing a
+	  set of binary executables that can be called from the AML interpreter
+	  or directly from device drivers.
+
+	  Say Y to enable the AML interpreter to execute the PRM code.
+
+	  While this feature is optional in principle, leaving it out may
+	  substantially increase computational overhead related to the
+	  initialization of some server systems.