| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | # |
| 3 | # This Kconfig describes xen options |
| 4 | # |
| 5 | |
| 6 | config 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 | |
| 17 | config 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 | |
| 29 | config XEN_PV_SMP |
| 30 | def_bool y |
| 31 | depends on XEN_PV && SMP |
| 32 | |
| 33 | config 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 | |
| 41 | config 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 | |
| 48 | config XEN_PVHVM_SMP |
| 49 | def_bool y |
| 50 | depends on XEN_PVHVM && SMP |
| 51 | |
| 52 | config 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 | |
| 65 | config XEN_SAVE_RESTORE |
| 66 | bool |
| 67 | depends on XEN |
| 68 | select HIBERNATE_CALLBACKS |
| 69 | default y |
| 70 | |
| 71 | config 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 | |
| 79 | config 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 |