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 select PARAVIRT_XXL 23 select XEN_HAVE_PVMMU 24 select XEN_HAVE_VPMU 25 help 26 Support running as a Xen PV guest. 27 28config XEN_PV_SMP 29 def_bool y 30 depends on XEN_PV && SMP 31 32config XEN_DOM0 33 bool "Xen PV Dom0 support" 34 default y 35 depends on XEN_PV && PCI_XEN && SWIOTLB_XEN 36 depends on X86_IO_APIC && ACPI && PCI 37 help 38 Support running as a Xen PV Dom0 guest. 39 40config XEN_PVHVM 41 bool "Xen PVHVM guest support" 42 default y 43 depends on XEN && PCI && X86_LOCAL_APIC 44 help 45 Support running as a Xen PVHVM guest. 46 47config XEN_PVHVM_SMP 48 def_bool y 49 depends on XEN_PVHVM && SMP 50 51config XEN_512GB 52 bool "Limit Xen pv-domain memory to 512GB" 53 depends on XEN_PV && X86_64 54 default y 55 help 56 Limit paravirtualized user domains to 512GB of RAM. 57 58 The Xen tools and crash dump analysis tools might not support 59 pv-domains with more than 512 GB of RAM. This option controls the 60 default setting of the kernel to use only up to 512 GB or more. 61 It is always possible to change the default via specifying the 62 boot parameter "xen_512gb_limit". 63 64config XEN_SAVE_RESTORE 65 bool 66 depends on XEN 67 select HIBERNATE_CALLBACKS 68 default y 69 70config XEN_DEBUG_FS 71 bool "Enable Xen debug and tuning parameters in debugfs" 72 depends on XEN && DEBUG_FS 73 help 74 Enable statistics output and various tuning options in debugfs. 75 Enabling this option may incur a significant performance overhead. 76 77config XEN_PVH 78 bool "Support for running as a Xen PVH guest" 79 depends on XEN && XEN_PVHVM && ACPI 80 select PVH 81 def_bool n 82