ACPI: Kconfig: Provide help text for the ACPI_PRMT option

Add missing help text for CONFIG_ACPI_PRMT.

Fixes: cefc7ca46235 ("ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype")
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3972de7..3fec025 100644 (file)
--- a/drivers/acpi/Kconfig
+++ b/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.