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9e5dd49de5
Selecting CONFIG_TRACE_REMOTE causes a build time warning when FTRACE
is disabled:
WARNING: unmet direct dependencies detected for TRACE_REMOTE
Depends on [n]: FTRACE [=n]
Selected by [y]:
- NVHE_EL2_TRACING [=y] && VIRTUALIZATION [=y] && KVM [=y] && NVHE_EL2_DEBUG [=y] && TRACING [=y]
Add this as another dependency to ensure a clean build.
Fixes: 3aed038aac ("KVM: arm64: Add trace remote for the nVHE/pKVM hyp")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Vincent Donnefort <vdonnefort@google.com>
Link: https://patch.msgid.link/20260312123601.625063-3-arnd@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
108 lines
2.7 KiB
Plaintext
108 lines
2.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# KVM configuration
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#
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source "virt/kvm/Kconfig"
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menuconfig VIRTUALIZATION
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bool "Virtualization"
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help
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Say Y here to get to see options for using your Linux host to run
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other operating systems inside virtual machines (guests).
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and
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disabled.
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if VIRTUALIZATION
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menuconfig KVM
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bool "Kernel-based Virtual Machine (KVM) support"
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select KVM_COMMON
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select KVM_GENERIC_HARDWARE_ENABLING
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select KVM_MMIO
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select KVM_GENERIC_DIRTYLOG_READ_PROTECT
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select VIRT_XFER_TO_GUEST_WORK
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select KVM_VFIO
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select HAVE_KVM_DIRTY_RING_ACQ_REL
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select NEED_KVM_DIRTY_RING_WITH_BITMAP
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select HAVE_KVM_MSI
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_IRQ_BYPASS
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select HAVE_KVM_READONLY_MEM
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select HAVE_KVM_VCPU_RUN_PID_CHANGE
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select SCHED_INFO
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select GUEST_PERF_EVENTS if PERF_EVENTS
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select KVM_GUEST_MEMFD
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help
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Support hosting virtualized guest machines.
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If unsure, say N.
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if KVM
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config PTDUMP_STAGE2_DEBUGFS
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bool "Present the stage-2 pagetables to debugfs"
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depends on DEBUG_KERNEL
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depends on DEBUG_FS
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depends on ARCH_HAS_PTDUMP
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select PTDUMP
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default n
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help
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Say Y here if you want to show the stage-2 kernel pagetables
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layout in a debugfs file. This information is only useful for kernel developers
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who are working in architecture specific areas of the kernel.
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It is probably not a good idea to enable this feature in a production
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kernel.
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If in doubt, say N.
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config NVHE_EL2_DEBUG
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bool "Debug mode for non-VHE EL2 object"
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default n
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help
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Say Y here to enable the debug mode for the non-VHE KVM EL2 object.
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Failure reports will BUG() in the hypervisor. This is intended for
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local EL2 hypervisor development.
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If unsure, say N.
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if NVHE_EL2_DEBUG
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config NVHE_EL2_TRACING
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bool
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depends on TRACING && FTRACE
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select TRACE_REMOTE
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default y
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config PKVM_DISABLE_STAGE2_ON_PANIC
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bool "Disable the host stage-2 on panic"
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default n
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help
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Relax the host stage-2 on hypervisor panic to allow the kernel to
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unwind and symbolize the hypervisor stacktrace. This however tampers
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the system security. This is intended for local EL2 hypervisor
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development.
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If unsure, say N.
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config PKVM_STACKTRACE
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bool "Protected KVM hypervisor stacktraces"
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depends on PKVM_DISABLE_STAGE2_ON_PANIC
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default y
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help
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Say Y here to enable pKVM hypervisor stacktraces on hyp_panic()
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If using protected nVHE mode, but cannot afford the associated
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memory cost (less than 0.75 page per CPU) of pKVM stacktraces,
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say N.
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If unsure, or not using protected nVHE (pKVM), say N.
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endif # NVHE_EL2_DEBUG
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endif # KVM
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endif # VIRTUALIZATION
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