arch/x86/xen/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # This Kconfig describes xen options
   4 #
   5
   6 config XEN
   7         bool "Xen guest support"
   8         depends on PARAVIRT
   9         select PARAVIRT_CLOCK
  10         depends on X86_64 || (X86_32 && X86_PAE)
  11         depends on X86_LOCAL_APIC && X86_TSC
  12         help
  13           This is the Linux Xen port.  Enabling this will allow the
  14           kernel to boot in a paravirtualized environment under the
  15           Xen hypervisor.
  16
  17 config XEN_PV
  18         bool "Xen PV guest support"
  19         default y
  20         depends on XEN
  21         # XEN_PV is not ready to work with 5-level paging.
  22         # Changes to hypervisor are also required.
  23         depends on !X86_5LEVEL
  24         select XEN_HAVE_PVMMU
  25         select XEN_HAVE_VPMU
  26         help
  27           Support running as a Xen PV guest.
  28
  29 config XEN_PV_SMP
  30         def_bool y
  31         depends on XEN_PV && SMP
  32
  33 config XEN_DOM0
  34         bool "Xen PV Dom0 support"
  35         default y
  36         depends on XEN_PV && PCI_XEN && SWIOTLB_XEN
  37         depends on X86_IO_APIC && ACPI && PCI
  38         help
  39           Support running as a Xen PV Dom0 guest.
  40
  41 config XEN_PVHVM
  42         bool "Xen PVHVM guest support"
  43         default y
  44         depends on XEN && PCI && X86_LOCAL_APIC
  45         help
  46           Support running as a Xen PVHVM guest.
  47
  48 config XEN_PVHVM_SMP
  49         def_bool y
  50         depends on XEN_PVHVM && SMP
  51
  52 config XEN_512GB
  53         bool "Limit Xen pv-domain memory to 512GB"
  54         depends on XEN_PV && X86_64
  55         default y
  56         help
  57           Limit paravirtualized user domains to 512GB of RAM.
  58
  59           The Xen tools and crash dump analysis tools might not support
  60           pv-domains with more than 512 GB of RAM. This option controls the
  61           default setting of the kernel to use only up to 512 GB or more.
  62           It is always possible to change the default via specifying the
  63           boot parameter "xen_512gb_limit".
  64
  65 config XEN_SAVE_RESTORE
  66        bool
  67        depends on XEN
  68        select HIBERNATE_CALLBACKS
  69        default y
  70
  71 config XEN_DEBUG_FS
  72         bool "Enable Xen debug and tuning parameters in debugfs"
  73         depends on XEN && DEBUG_FS
  74         default n
  75         help
  76           Enable statistics output and various tuning options in debugfs.
  77           Enabling this option may incur a significant performance overhead.
  78
  79 config XEN_PVH
  80         bool "Support for running as a PVH guest"
  81         depends on XEN && XEN_PVHVM && ACPI
  82         # Pre-built page tables are not ready to handle 5-level paging.
  83         depends on !X86_5LEVEL
  84         def_bool n