1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 29702785aSThomas Gleixner# 39702785aSThomas Gleixner# This Kconfig describes xen options 49702785aSThomas Gleixner# 59702785aSThomas Gleixner 69702785aSThomas Gleixnerconfig XEN 7d3d1c4bdSRusty Russell bool "Xen guest support" 86276a074SBorislav Petkov depends on PARAVIRT 91c7b67f7SGerd Hoffmann select PARAVIRT_CLOCK 10ecca2502SZhao Yakui select X86_HV_CALLBACK_VECTOR 11*29c2f18dSLukas Bulwahn select HIBERNATE_CALLBACKS 12c5f9ee3dSH. Peter Anvin depends on X86_64 || (X86_32 && X86_PAE) 13091b7686SLukas Bulwahn depends on X86_64 || (X86_GENERIC || MPENTIUM4 || MATOM) 1487ffd2b9SDavid Vrabel depends on X86_LOCAL_APIC && X86_TSC 159702785aSThomas Gleixner help 169702785aSThomas Gleixner This is the Linux Xen port. Enabling this will allow the 179702785aSThomas Gleixner kernel to boot in a paravirtualized environment under the 189702785aSThomas Gleixner Xen hypervisor. 198006ec3eSJeremy Fitzhardinge 205e57f1d6SVitaly Kuznetsovconfig XEN_PV 215e57f1d6SVitaly Kuznetsov bool "Xen PV guest support" 225e57f1d6SVitaly Kuznetsov default y 235e57f1d6SVitaly Kuznetsov depends on XEN 24a13f2ef1SJuergen Gross depends on X86_64 25c00a280aSJuergen Gross select PARAVIRT_XXL 265e57f1d6SVitaly Kuznetsov select XEN_HAVE_PVMMU 2750a1062dSVitaly Kuznetsov select XEN_HAVE_VPMU 282aef6f30SSean Christopherson select GUEST_PERF_EVENTS 295e57f1d6SVitaly Kuznetsov help 305e57f1d6SVitaly Kuznetsov Support running as a Xen PV guest. 315e57f1d6SVitaly Kuznetsov 32bfda93aeSJason Andryukconfig XEN_512GB 33bfda93aeSJason Andryuk bool "Limit Xen pv-domain memory to 512GB" 346190c0ccSJason Andryuk depends on XEN_PV 35bfda93aeSJason Andryuk default y 36bfda93aeSJason Andryuk help 37bfda93aeSJason Andryuk Limit paravirtualized user domains to 512GB of RAM. 38bfda93aeSJason Andryuk 39bfda93aeSJason Andryuk The Xen tools and crash dump analysis tools might not support 40bfda93aeSJason Andryuk pv-domains with more than 512 GB of RAM. This option controls the 41bfda93aeSJason Andryuk default setting of the kernel to use only up to 512 GB or more. 42bfda93aeSJason Andryuk It is always possible to change the default via specifying the 43bfda93aeSJason Andryuk boot parameter "xen_512gb_limit". 44bfda93aeSJason Andryuk 4533af7469SVitaly Kuznetsovconfig XEN_PV_SMP 4633af7469SVitaly Kuznetsov def_bool y 4733af7469SVitaly Kuznetsov depends on XEN_PV && SMP 4833af7469SVitaly Kuznetsov 49cae7d81aSJan Beulichconfig XEN_PV_DOM0 50cae7d81aSJan Beulich def_bool y 51cae7d81aSJan Beulich depends on XEN_PV && XEN_DOM0 526b0661a5SStefano Stabellini 53ca65f9fcSStefano Stabelliniconfig XEN_PVHVM 5434aff145SJason Andryuk def_bool y 5534aff145SJason Andryuk depends on XEN && X86_LOCAL_APIC 56ca65f9fcSStefano Stabellini 57a52482d9SVitaly Kuznetsovconfig XEN_PVHVM_SMP 58a52482d9SVitaly Kuznetsov def_bool y 59a52482d9SVitaly Kuznetsov depends on XEN_PVHVM && SMP 60a52482d9SVitaly Kuznetsov 6134aff145SJason Andryukconfig XEN_PVHVM_GUEST 6234aff145SJason Andryuk bool "Xen PVHVM guest support" 6334aff145SJason Andryuk default y 6434aff145SJason Andryuk depends on XEN_PVHVM && PCI 6534aff145SJason Andryuk help 6634aff145SJason Andryuk Support running as a Xen PVHVM guest. 6734aff145SJason Andryuk 68994025caSJeremy Fitzhardingeconfig XEN_DEBUG_FS 69994025caSJeremy Fitzhardinge bool "Enable Xen debug and tuning parameters in debugfs" 70994025caSJeremy Fitzhardinge depends on XEN && DEBUG_FS 71994025caSJeremy Fitzhardinge help 72994025caSJeremy Fitzhardinge Enable statistics output and various tuning options in debugfs. 73994025caSJeremy Fitzhardinge Enabling this option may incur a significant performance overhead. 7480df4649SMaxim Uvarov 75ddc416cbSMukesh Rathorconfig XEN_PVH 7634aff145SJason Andryuk bool "Xen PVH guest support" 777243b933SBoris Ostrovsky depends on XEN && XEN_PVHVM && ACPI 787733607fSMaran Wilson select PVH 7934aff145SJason Andryuk help 8034aff145SJason Andryuk Support for running as a Xen PVH guest. 81cae7d81aSJan Beulich 82cae7d81aSJan Beulichconfig XEN_DOM0 83cae7d81aSJan Beulich bool "Xen Dom0 support" 84cae7d81aSJan Beulich default XEN_PV 85cae7d81aSJan Beulich depends on (XEN_PV && SWIOTLB_XEN) || (XEN_PVH && X86_64) 86cae7d81aSJan Beulich depends on X86_IO_APIC && ACPI && PCI 87cae7d81aSJan Beulich select X86_X2APIC if XEN_PVH && X86_64 88cae7d81aSJan Beulich help 89cae7d81aSJan Beulich Support running as a Xen Dom0 guest. 903fac3734SJuergen Gross 913fac3734SJuergen Grossconfig XEN_PV_MSR_SAFE 923fac3734SJuergen Gross bool "Always use safe MSR accesses in PV guests" 933fac3734SJuergen Gross default y 943fac3734SJuergen Gross depends on XEN_PV 953fac3734SJuergen Gross help 963fac3734SJuergen Gross Use safe (not faulting) MSR access functions even if the MSR access 973fac3734SJuergen Gross should not fault anyway. 983fac3734SJuergen Gross The default can be changed by using the "xen_msr_safe" boot parameter. 99