0001 # SPDX-License-Identifier: GPL-2.0
0002 #
0003 # This Kconfig describes xen options
0004 #
0005
0006 config XEN
0007 bool "Xen guest support"
0008 depends on PARAVIRT
0009 select PARAVIRT_CLOCK
0010 select X86_HV_CALLBACK_VECTOR
0011 depends on X86_64 || (X86_32 && X86_PAE)
0012 depends on X86_LOCAL_APIC && X86_TSC
0013 help
0014 This is the Linux Xen port. Enabling this will allow the
0015 kernel to boot in a paravirtualized environment under the
0016 Xen hypervisor.
0017
0018 config XEN_PV
0019 bool "Xen PV guest support"
0020 default y
0021 depends on XEN
0022 depends on X86_64
0023 select PARAVIRT_XXL
0024 select XEN_HAVE_PVMMU
0025 select XEN_HAVE_VPMU
0026 select GUEST_PERF_EVENTS
0027 help
0028 Support running as a Xen PV guest.
0029
0030 config XEN_512GB
0031 bool "Limit Xen pv-domain memory to 512GB"
0032 depends on XEN_PV
0033 default y
0034 help
0035 Limit paravirtualized user domains to 512GB of RAM.
0036
0037 The Xen tools and crash dump analysis tools might not support
0038 pv-domains with more than 512 GB of RAM. This option controls the
0039 default setting of the kernel to use only up to 512 GB or more.
0040 It is always possible to change the default via specifying the
0041 boot parameter "xen_512gb_limit".
0042
0043 config XEN_PV_SMP
0044 def_bool y
0045 depends on XEN_PV && SMP
0046
0047 config XEN_PV_DOM0
0048 def_bool y
0049 depends on XEN_PV && XEN_DOM0
0050
0051 config XEN_PVHVM
0052 def_bool y
0053 depends on XEN && X86_LOCAL_APIC
0054
0055 config XEN_PVHVM_SMP
0056 def_bool y
0057 depends on XEN_PVHVM && SMP
0058
0059 config XEN_PVHVM_GUEST
0060 bool "Xen PVHVM guest support"
0061 default y
0062 depends on XEN_PVHVM && PCI
0063 help
0064 Support running as a Xen PVHVM guest.
0065
0066 config XEN_SAVE_RESTORE
0067 bool
0068 depends on XEN
0069 select HIBERNATE_CALLBACKS
0070 default y
0071
0072 config XEN_DEBUG_FS
0073 bool "Enable Xen debug and tuning parameters in debugfs"
0074 depends on XEN && DEBUG_FS
0075 help
0076 Enable statistics output and various tuning options in debugfs.
0077 Enabling this option may incur a significant performance overhead.
0078
0079 config XEN_PVH
0080 bool "Xen PVH guest support"
0081 depends on XEN && XEN_PVHVM && ACPI
0082 select PVH
0083 def_bool n
0084 help
0085 Support for running as a Xen PVH guest.
0086
0087 config XEN_DOM0
0088 bool "Xen Dom0 support"
0089 default XEN_PV
0090 depends on (XEN_PV && SWIOTLB_XEN) || (XEN_PVH && X86_64)
0091 depends on X86_IO_APIC && ACPI && PCI
0092 select X86_X2APIC if XEN_PVH && X86_64
0093 help
0094 Support running as a Xen Dom0 guest.
