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 help 27 Support running as a Xen PV guest. 28 29config XEN_512GB 30 bool "Limit Xen pv-domain memory to 512GB" 31 depends on XEN_PV 32 default y 33 help 34 Limit paravirtualized user domains to 512GB of RAM. 35 36 The Xen tools and crash dump analysis tools might not support 37 pv-domains with more than 512 GB of RAM. This option controls the 38 default setting of the kernel to use only up to 512 GB or more. 39 It is always possible to change the default via specifying the 40 boot parameter "xen_512gb_limit". 41 42config XEN_PV_SMP 43 def_bool y 44 depends on XEN_PV && SMP 45 46config XEN_DOM0 47 bool "Xen PV Dom0 support" 48 default y 49 depends on XEN_PV && PCI_XEN && SWIOTLB_XEN 50 depends on X86_IO_APIC && ACPI && PCI 51 help 52 Support running as a Xen PV Dom0 guest. 53 54config XEN_PVHVM 55 def_bool y 56 depends on XEN && X86_LOCAL_APIC 57 58config XEN_PVHVM_SMP 59 def_bool y 60 depends on XEN_PVHVM && SMP 61 62config XEN_PVHVM_GUEST 63 bool "Xen PVHVM guest support" 64 default y 65 depends on XEN_PVHVM && PCI 66 help 67 Support running as a Xen PVHVM guest. 68 69config XEN_SAVE_RESTORE 70 bool 71 depends on XEN 72 select HIBERNATE_CALLBACKS 73 default y 74 75config XEN_DEBUG_FS 76 bool "Enable Xen debug and tuning parameters in debugfs" 77 depends on XEN && DEBUG_FS 78 help 79 Enable statistics output and various tuning options in debugfs. 80 Enabling this option may incur a significant performance overhead. 81 82config XEN_PVH 83 bool "Xen PVH guest support" 84 depends on XEN && XEN_PVHVM && ACPI 85 select PVH 86 def_bool n 87 help 88 Support for running as a Xen PVH guest. 89