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_64 || (X86_GENERIC || MPENTIUM4 || MCORE2 || MATOM || MK8) 13 depends on X86_LOCAL_APIC && X86_TSC 14 help 15 This is the Linux Xen port. Enabling this will allow the 16 kernel to boot in a paravirtualized environment under the 17 Xen hypervisor. 18 19config XEN_PV 20 bool "Xen PV guest support" 21 default y 22 depends on XEN 23 depends on X86_64 24 select PARAVIRT_XXL 25 select XEN_HAVE_PVMMU 26 select XEN_HAVE_VPMU 27 select GUEST_PERF_EVENTS 28 help 29 Support running as a Xen PV guest. 30 31config XEN_512GB 32 bool "Limit Xen pv-domain memory to 512GB" 33 depends on XEN_PV 34 default y 35 help 36 Limit paravirtualized user domains to 512GB of RAM. 37 38 The Xen tools and crash dump analysis tools might not support 39 pv-domains with more than 512 GB of RAM. This option controls the 40 default setting of the kernel to use only up to 512 GB or more. 41 It is always possible to change the default via specifying the 42 boot parameter "xen_512gb_limit". 43 44config XEN_PV_SMP 45 def_bool y 46 depends on XEN_PV && SMP 47 48config XEN_PV_DOM0 49 def_bool y 50 depends on XEN_PV && XEN_DOM0 51 52config XEN_PVHVM 53 def_bool y 54 depends on XEN && X86_LOCAL_APIC 55 56config XEN_PVHVM_SMP 57 def_bool y 58 depends on XEN_PVHVM && SMP 59 60config XEN_PVHVM_GUEST 61 bool "Xen PVHVM guest support" 62 default y 63 depends on XEN_PVHVM && PCI 64 help 65 Support running as a Xen PVHVM guest. 66 67config XEN_SAVE_RESTORE 68 bool 69 depends on XEN 70 select HIBERNATE_CALLBACKS 71 default y 72 73config XEN_DEBUG_FS 74 bool "Enable Xen debug and tuning parameters in debugfs" 75 depends on XEN && DEBUG_FS 76 help 77 Enable statistics output and various tuning options in debugfs. 78 Enabling this option may incur a significant performance overhead. 79 80config XEN_PVH 81 bool "Xen PVH guest support" 82 depends on XEN && XEN_PVHVM && ACPI 83 select PVH 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