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Currently, CONFIG_VHOST depends on CONFIG_VIRTUALIZATION. But vhost is not necessarily for VM since it's a generic userspace and kernel communication protocol. Such dependency may prevent archs without virtualization support from using vhost. To solve this, a dedicated vhost menu is created under drivers so CONIFG_VHOST can be decoupled out of CONFIG_VIRTUALIZATION. While at it, also squash Kconfig.vringh into vhost Kconfig file. This avoids the trick of conditional inclusion from VOP or CAIF. Then it will be easier to introduce new vringh users and common dependency for both vringh and vhost. Signed-off-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200326140125.19794-2-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
111 lines
3.1 KiB
Plaintext
111 lines
3.1 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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depends on HAVE_KVM || X86
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default y
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---help---
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Say Y here to get to see options for using your Linux host to run other
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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 disabled.
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if VIRTUALIZATION
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config KVM
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tristate "Kernel-based Virtual Machine (KVM) support"
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depends on HAVE_KVM
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depends on HIGH_RES_TIMERS
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# for TASKSTATS/TASK_DELAY_ACCT:
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depends on NET && MULTIUSER
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depends on X86_LOCAL_APIC
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select PREEMPT_NOTIFIERS
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select MMU_NOTIFIER
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select IRQ_BYPASS_MANAGER
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select HAVE_KVM_IRQ_BYPASS
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_EVENTFD
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select KVM_ASYNC_PF
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select USER_RETURN_NOTIFIER
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select KVM_MMIO
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select TASKSTATS
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select TASK_DELAY_ACCT
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select PERF_EVENTS
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select HAVE_KVM_MSI
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select HAVE_KVM_NO_POLL
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select KVM_GENERIC_DIRTYLOG_READ_PROTECT
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select KVM_VFIO
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select SRCU
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---help---
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Support hosting fully virtualized guest machines using hardware
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virtualization extensions. You will need a fairly recent
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processor equipped with virtualization extensions. You will also
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need to select one or more of the processor modules below.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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To compile this as a module, choose M here: the module
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will be called kvm.
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If unsure, say N.
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config KVM_WERROR
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bool "Compile KVM with -Werror"
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# KASAN may cause the build to fail due to larger frames
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default y if X86_64 && !KASAN
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# We use the dependency on !COMPILE_TEST to not be enabled
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# blindly in allmodconfig or allyesconfig configurations
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depends on (X86_64 && !KASAN) || !COMPILE_TEST
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depends on EXPERT
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help
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Add -Werror to the build flags for KVM.
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If in doubt, say "N".
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config KVM_INTEL
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tristate "KVM for Intel (and compatible) processors support"
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depends on KVM && IA32_FEAT_CTL
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---help---
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Provides support for KVM on processors equipped with Intel's VT
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extensions, a.k.a. Virtual Machine Extensions (VMX).
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To compile this as a module, choose M here: the module
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will be called kvm-intel.
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config KVM_AMD
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tristate "KVM for AMD processors support"
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depends on KVM
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---help---
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Provides support for KVM on AMD processors equipped with the AMD-V
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(SVM) extensions.
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To compile this as a module, choose M here: the module
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will be called kvm-amd.
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config KVM_AMD_SEV
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def_bool y
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bool "AMD Secure Encrypted Virtualization (SEV) support"
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depends on KVM_AMD && X86_64
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depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
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---help---
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Provides support for launching Encrypted VMs on AMD processors.
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config KVM_MMU_AUDIT
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bool "Audit KVM MMU"
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depends on KVM && TRACEPOINTS
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---help---
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This option adds a R/W kVM module parameter 'mmu_audit', which allows
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auditing of KVM MMU events at runtime.
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endif # VIRTUALIZATION
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