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 select X86_HV_CALLBACK_VECTOR 11 depends on X86_64 || (X86_32 && X86_PAE) 12 depends on X86_LOCAL_APIC && X86_TSC 13 help 14 This is the Linux Xen port. Enabling this will allow the 15 kernel to boot in a paravirtualized environment under the 16 Xen hypervisor. 17 18config XEN_PV 19 bool "Xen PV guest support" 20 default y 21 depends on XEN 22 depends on X86_64 23 select PARAVIRT_XXL 24 select XEN_HAVE_PVMMU 25 select XEN_HAVE_VPMU 26 select GUEST_PERF_EVENTS 27 help 28 Support running as a Xen PV guest. 29 30config XEN_512GB 31 bool "Limit Xen pv-domain memory to 512GB" 32 depends on XEN_PV 33 default y 34 help 35 Limit paravirtualized user domains to 512GB of RAM. 36 37 The Xen tools and crash dump analysis tools might not support 38 pv-domains with more than 512 GB of RAM. This option controls the 39 default setting of the kernel to use only up to 512 GB or more. 40 It is always possible to change the default via specifying the 41 boot parameter "xen_512gb_limit". 42 43config XEN_PV_SMP 44 def_bool y 45 depends on XEN_PV && SMP 46 47config XEN_PV_DOM0 48 def_bool y 49 depends on XEN_PV && XEN_DOM0 50 51config XEN_PVHVM 52 def_bool y 53 depends on XEN && X86_LOCAL_APIC 54 55config XEN_PVHVM_SMP 56 def_bool y 57 depends on XEN_PVHVM && SMP 58 59config XEN_PVHVM_GUEST 60 bool "Xen PVHVM guest support" 61 default y 62 depends on XEN_PVHVM && PCI 63 help 64 Support running as a Xen PVHVM guest. 65 66config XEN_SAVE_RESTORE 67 bool 68 depends on XEN 69 select HIBERNATE_CALLBACKS 70 default y 71 72config XEN_DEBUG_FS 73 bool "Enable Xen debug and tuning parameters in debugfs" 74 depends on XEN && DEBUG_FS 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 "Xen PVH guest support" 81 depends on XEN && XEN_PVHVM && ACPI 82 select PVH 83 def_bool n 84 help 85 Support for running as a Xen PVH guest. 86 87config XEN_DOM0 88 bool "Xen Dom0 support" 89 default XEN_PV 90 depends on (XEN_PV && SWIOTLB_XEN) || (XEN_PVH && X86_64) 91 depends on X86_IO_APIC && ACPI && PCI 92 select X86_X2APIC if XEN_PVH && X86_64 93 help 94 Support running as a Xen Dom0 guest. 95 96config XEN_PV_MSR_SAFE 97 bool "Always use safe MSR accesses in PV guests" 98 default y 99 depends on XEN_PV 100 help 101 Use safe (not faulting) MSR access functions even if the MSR access 102 should not fault anyway. 103 The default can be changed by using the "xen_msr_safe" boot parameter. 104