arch/x86/kvm/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # KVM configuration
   4 #
   5
   6 source "virt/kvm/Kconfig"
   7
   8 menuconfig VIRTUALIZATION
   9         bool "Virtualization"
  10         depends on HAVE_KVM || X86
  11         default y
  12         ---help---
  13           Say Y here to get to see options for using your Linux host to run other
  14           operating systems inside virtual machines (guests).
  15           This option alone does not add any kernel code.
  16
  17           If you say N, all options in this submenu will be skipped and disabled.
  18
  19 if VIRTUALIZATION
  20
  21 config KVM
  22         tristate "Kernel-based Virtual Machine (KVM) support"
  23         depends on HAVE_KVM
  24         depends on HIGH_RES_TIMERS
  25         # for TASKSTATS/TASK_DELAY_ACCT:
  26         depends on NET && MULTIUSER
  27         depends on X86_LOCAL_APIC
  28         select PREEMPT_NOTIFIERS
  29         select MMU_NOTIFIER
  30         select HAVE_KVM_IRQCHIP
  31         select HAVE_KVM_IRQFD
  32         select IRQ_BYPASS_MANAGER
  33         select HAVE_KVM_IRQ_BYPASS
  34         select HAVE_KVM_IRQ_ROUTING
  35         select HAVE_KVM_EVENTFD
  36         select KVM_ASYNC_PF
  37         select USER_RETURN_NOTIFIER
  38         select KVM_MMIO
  39         select TASKSTATS
  40         select TASK_DELAY_ACCT
  41         select PERF_EVENTS
  42         select HAVE_KVM_MSI
  43         select HAVE_KVM_CPU_RELAX_INTERCEPT
  44         select HAVE_KVM_NO_POLL
  45         select KVM_GENERIC_DIRTYLOG_READ_PROTECT
  46         select KVM_VFIO
  47         select SRCU
  48         ---help---
  49           Support hosting fully virtualized guest machines using hardware
  50           virtualization extensions.  You will need a fairly recent
  51           processor equipped with virtualization extensions. You will also
  52           need to select one or more of the processor modules below.
  53
  54           This module provides access to the hardware capabilities through
  55           a character device node named /dev/kvm.
  56
  57           To compile this as a module, choose M here: the module
  58           will be called kvm.
  59
  60           If unsure, say N.
  61
  62 config KVM_WERROR
  63         bool "Compile KVM with -Werror"
  64         # KASAN may cause the build to fail due to larger frames
  65         default y if X86_64 && !KASAN
  66         # We use the dependency on !COMPILE_TEST to not be enabled
  67         # blindly in allmodconfig or allyesconfig configurations
  68         depends on (X86_64 && !KASAN) || !COMPILE_TEST
  69         depends on EXPERT
  70         help
  71           Add -Werror to the build flags for KVM.
  72
  73           If in doubt, say "N".
  74
  75 config KVM_INTEL
  76         tristate "KVM for Intel (and compatible) processors support"
  77         depends on KVM && IA32_FEAT_CTL
  78         ---help---
  79           Provides support for KVM on processors equipped with Intel's VT
  80           extensions, a.k.a. Virtual Machine Extensions (VMX).
  81
  82           To compile this as a module, choose M here: the module
  83           will be called kvm-intel.
  84
  85 config KVM_AMD
  86         tristate "KVM for AMD processors support"
  87         depends on KVM
  88         ---help---
  89           Provides support for KVM on AMD processors equipped with the AMD-V
  90           (SVM) extensions.
  91
  92           To compile this as a module, choose M here: the module
  93           will be called kvm-amd.
  94
  95 config KVM_AMD_SEV
  96         def_bool y
  97         bool "AMD Secure Encrypted Virtualization (SEV) support"
  98         depends on KVM_AMD && X86_64
  99         depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
 100         ---help---
 101         Provides support for launching Encrypted VMs on AMD processors.
 102
 103 config KVM_MMU_AUDIT
 104         bool "Audit KVM MMU"
 105         depends on KVM && TRACEPOINTS
 106         ---help---
 107          This option adds a R/W kVM module parameter 'mmu_audit', which allows
 108          auditing of KVM MMU events at runtime.
 109
 110 # OK, it's a little counter-intuitive to do this, but it puts it neatly under
 111 # the virtualization menu.
 112 source "drivers/vhost/Kconfig"
 113
 114 endif # VIRTUALIZATION