1# SPDX-License-Identifier: GPL-2.0 2# 3# This Kconfig describes xen options 4# 5 6config 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 17config 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 29config XEN_PV_SMP 30 def_bool y 31 depends on XEN_PV && SMP 32 33config 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 41config 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 48config XEN_PVHVM_SMP 49 def_bool y 50 depends on XEN_PVHVM && SMP 51 52config 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 65config XEN_SAVE_RESTORE 66 bool 67 depends on XEN 68 select HIBERNATE_CALLBACKS 69 default y 70 71config 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 79config 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 85