# SPDX-License-Identifier: GPL-2.0-only
config ARCH_SUPPORTS_RMM
	bool

config ARM_RMM_RMI
	bool "Realm Management Interface (RMI) Support"
	depends on ARCH_SUPPORTS_RMM
	help
	  Support the Realm Management Monitor (RMM) on Arm systems that
	  implement the Realm Management Extension (RME), as defined by the
	  Arm Confidential Compute Architecture.

	  The RMM runs at EL2 in the Realm world and provides the Realm
	  Management Interface (RMI) used by a Normal World host to create,
	  manage and run protected virtual machines called Realms. The RMM can
	  also act as a TSM, as defined by the PCIe TDISP and can manage the
	  PCI IDE setup for securing the PCIe links.

	  This option builds the host-side RMI support used by KVM to detect a
	  compatible RMM, configure it, manage delegated memory and enable
	  Realm guests.

	  Selecting this option does not by itself make Realm guests available:
	  the system must also provide RME-capable hardware and firmware with a
	  compatible RMM implementation.

config ARM_RMM_RSI
	bool "Realm Service Interface (RSI) Support"
	depends on ARCH_SUPPORTS_RMM
	default y
	help
	  Enable support for running Linux as a Realm guest under a Realm
	  Management Monitor (RMM), as defined by the Arm Confidential
	  Compute Architecture.

	  The RMM exposes the Realm Service Interface (RSI) to Realm guests.
	  Linux uses RSI to negotiate the interface version, obtain the Realm
	  configuration, and manage the protected or shared state of guest
	  memory.