# SPDX-License-Identifier: GPL-2.0
#
# KVM configuration
#

source "virt/lib/Kconfig"
source "virt/kvm/Kconfig"

menuconfig VIRTUALIZATION
	bool "Virtualization"
	help
	  Say Y here to get to see options for using your Linux host to run
	  other operating systems inside virtual machines (guests).
	  This option alone does not add any kernel code.

	  If you say N, all options in this submenu will be skipped and
	  disabled.

if VIRTUALIZATION

menuconfig KVM
	bool "Kernel-based Virtual Machine (KVM) support"
	depends on HAVE_KVM
	select KVM_GENERIC_HARDWARE_ENABLING
	select MMU_NOTIFIER
	select PREEMPT_NOTIFIERS
	select HAVE_KVM_CPU_RELAX_INTERCEPT
	select HAVE_KVM_ARCH_TLB_FLUSH_ALL
	select KVM_MMIO
	select KVM_GENERIC_DIRTYLOG_READ_PROTECT
	select KVM_XFER_TO_GUEST_WORK
	select KVM_VFIO
	select HAVE_KVM_EVENTFD
	select HAVE_KVM_IRQFD
	select HAVE_KVM_DIRTY_RING_ACQ_REL
	select NEED_KVM_DIRTY_RING_WITH_BITMAP
	select HAVE_KVM_MSI
	select HAVE_KVM_IRQCHIP
	select HAVE_KVM_IRQ_ROUTING
	select IRQ_BYPASS_MANAGER
	select HAVE_KVM_IRQ_BYPASS
	select HAVE_KVM_VCPU_RUN_PID_CHANGE
	select SCHED_INFO
	select GUEST_PERF_EVENTS if PERF_EVENTS
	select INTERVAL_TREE
	help
	  Support hosting virtualized guest machines.

	  If unsure, say N.

config NVHE_EL2_DEBUG
	bool "Debug mode for non-VHE EL2 object"
	depends on KVM
	help
	  Say Y here to enable the debug mode for the non-VHE KVM EL2 object.
	  Failure reports will BUG() in the hypervisor. This is intended for
	  local EL2 hypervisor development.

	  If unsure, say N.

config PROTECTED_NVHE_STACKTRACE
	bool "Protected KVM hypervisor stacktraces"
	depends on NVHE_EL2_DEBUG
	default n
	help
	  Say Y here to enable pKVM hypervisor stacktraces on hyp_panic()

	  If using protected nVHE mode, but cannot afford the associated
	  memory cost (less than 0.75 page per CPU) of pKVM stacktraces,
	  say N.

	  If unsure, or not using protected nVHE (pKVM), say N.

config NVHE_KCOV
	bool "Enable KCOV on the EL2 object"
	depends on NVHE_EL2_DEBUG && KCOV
	select PID_IN_CONTEXTIDR
	select ARCH_HAS_HYPERVISOR_KCOV
	default y
	help
	  Provide KCOV support at EL2. Enables support for the KCOV_ENABLE_HYP
	  option (for buffers initialized with KCOV_INIT_HYP_TRACE)

config NVHE_KCOV_NUM_BUFFERS
	int "Number of KCOV buffers in the EL2 object"
	depends on NVHE_KCOV
	default 10
	help
	  The maximum number of buffers simultaneous initialized at EL2. Those
	  are KCOV buffers intialized with KCOV_INIT_HYP_TRACE instead of
	  KCOV_INIT_TRACE.

endif # VIRTUALIZATION