Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1 | # |
| 2 | # KVM configuration |
| 3 | # |
| 4 | |
Avi Kivity | 0ba12d1 | 2009-05-21 16:45:19 +0300 | [diff] [blame] | 5 | source "virt/kvm/Kconfig" |
Avi Kivity | 5d9b8e3 | 2009-01-04 18:04:18 +0200 | [diff] [blame] | 6 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 7 | menuconfig VIRTUALIZATION |
| 8 | bool "Virtualization" |
| 9 | ---help--- |
| 10 | Say Y here to get to see options for using your Linux host to run |
| 11 | other operating systems inside virtual machines (guests). |
| 12 | This option alone does not add any kernel code. |
| 13 | |
| 14 | If you say N, all options in this submenu will be skipped and |
| 15 | disabled. |
| 16 | |
| 17 | if VIRTUALIZATION |
| 18 | |
| 19 | config KVM |
Hollis Blanchard | 74ef740 | 2008-11-07 13:15:13 -0600 | [diff] [blame] | 20 | bool |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 21 | select PREEMPT_NOTIFIERS |
| 22 | select ANON_INODES |
Alexander Graf | 0e673fb | 2012-10-09 00:06:20 +0200 | [diff] [blame] | 23 | select HAVE_KVM_EVENTFD |
Pranith Kumar | 83fe27e | 2014-12-05 11:24:45 -0500 | [diff] [blame] | 24 | select SRCU |
Hollis Blanchard | 74ef740 | 2008-11-07 13:15:13 -0600 | [diff] [blame] | 25 | |
Alexander Graf | c14dea0 | 2010-04-16 00:11:41 +0200 | [diff] [blame] | 26 | config KVM_BOOK3S_HANDLER |
| 27 | bool |
| 28 | |
Alexander Graf | 4f84139 | 2010-04-16 00:11:58 +0200 | [diff] [blame] | 29 | config KVM_BOOK3S_32_HANDLER |
| 30 | bool |
| 31 | select KVM_BOOK3S_HANDLER |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 32 | select KVM_MMIO |
Alexander Graf | 4f84139 | 2010-04-16 00:11:58 +0200 | [diff] [blame] | 33 | |
Alexander Graf | c4f9c77 | 2009-10-30 05:47:24 +0000 | [diff] [blame] | 34 | config KVM_BOOK3S_64_HANDLER |
| 35 | bool |
Alexander Graf | c14dea0 | 2010-04-16 00:11:41 +0200 | [diff] [blame] | 36 | select KVM_BOOK3S_HANDLER |
Alexander Graf | c4f9c77 | 2009-10-30 05:47:24 +0000 | [diff] [blame] | 37 | |
Aneesh Kumar K.V | 7aa7993 | 2013-10-07 22:17:51 +0530 | [diff] [blame] | 38 | config KVM_BOOK3S_PR_POSSIBLE |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 39 | bool |
| 40 | select KVM_MMIO |
Alexander Graf | 9b0cb3c | 2012-08-10 13:23:55 +0200 | [diff] [blame] | 41 | select MMU_NOTIFIER |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 42 | |
Aneesh Kumar K.V | 9975f5e | 2013-10-07 22:17:52 +0530 | [diff] [blame] | 43 | config KVM_BOOK3S_HV_POSSIBLE |
| 44 | bool |
| 45 | |
Alexander Graf | 4f84139 | 2010-04-16 00:11:58 +0200 | [diff] [blame] | 46 | config KVM_BOOK3S_32 |
| 47 | tristate "KVM support for PowerPC book3s_32 processors" |
Kees Cook | 07ff8b5 | 2013-01-16 18:53:22 -0800 | [diff] [blame] | 48 | depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT |
Alexander Graf | 4f84139 | 2010-04-16 00:11:58 +0200 | [diff] [blame] | 49 | select KVM |
| 50 | select KVM_BOOK3S_32_HANDLER |
Aneesh Kumar K.V | 7aa7993 | 2013-10-07 22:17:51 +0530 | [diff] [blame] | 51 | select KVM_BOOK3S_PR_POSSIBLE |
Alexander Graf | 4f84139 | 2010-04-16 00:11:58 +0200 | [diff] [blame] | 52 | ---help--- |
| 53 | Support running unmodified book3s_32 guest kernels |
| 54 | in virtual machines on book3s_32 host processors. |
| 55 | |
| 56 | This module provides access to the hardware capabilities through |
| 57 | a character device node named /dev/kvm. |
| 58 | |
| 59 | If unsure, say N. |
| 60 | |
Alexander Graf | c4f9c77 | 2009-10-30 05:47:24 +0000 | [diff] [blame] | 61 | config KVM_BOOK3S_64 |
| 62 | tristate "KVM support for PowerPC book3s_64 processors" |
Kees Cook | 07ff8b5 | 2013-01-16 18:53:22 -0800 | [diff] [blame] | 63 | depends on PPC_BOOK3S_64 |
Alexander Graf | c4f9c77 | 2009-10-30 05:47:24 +0000 | [diff] [blame] | 64 | select KVM_BOOK3S_64_HANDLER |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 65 | select KVM |
Aneesh Kumar K.V | 9975f5e | 2013-10-07 22:17:52 +0530 | [diff] [blame] | 66 | select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE |
Alexander Graf | c4f9c77 | 2009-10-30 05:47:24 +0000 | [diff] [blame] | 67 | ---help--- |
| 68 | Support running unmodified book3s_64 and book3s_32 guest kernels |
| 69 | in virtual machines on book3s_64 host processors. |
| 70 | |
| 71 | This module provides access to the hardware capabilities through |
| 72 | a character device node named /dev/kvm. |
| 73 | |
| 74 | If unsure, say N. |
| 75 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 76 | config KVM_BOOK3S_64_HV |
Thomas Huth | 129fd42 | 2015-05-22 11:41:01 +0200 | [diff] [blame] | 77 | tristate "KVM for POWER7 and later using hypervisor mode in host" |
Shreyas B. Prabhu | a7e73e7 | 2015-04-16 16:28:09 +0530 | [diff] [blame] | 78 | depends on KVM_BOOK3S_64 && PPC_POWERNV |
Aneesh Kumar K.V | 9975f5e | 2013-10-07 22:17:52 +0530 | [diff] [blame] | 79 | select KVM_BOOK3S_HV_POSSIBLE |
Paul Mackerras | 342d3db | 2011-12-12 12:38:05 +0000 | [diff] [blame] | 80 | select MMU_NOTIFIER |
Aneesh Kumar K.V | fa61a4e3 | 2013-07-02 11:15:16 +0530 | [diff] [blame] | 81 | select CMA |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 82 | ---help--- |
| 83 | Support running unmodified book3s_64 guest kernels in |
Thomas Huth | 129fd42 | 2015-05-22 11:41:01 +0200 | [diff] [blame] | 84 | virtual machines on POWER7 and newer processors that have |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 85 | hypervisor mode available to the host. |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 86 | |
| 87 | If you say Y here, KVM will use the hardware virtualization |
| 88 | facilities of POWER7 (and later) processors, meaning that |
| 89 | guest operating systems will run at full hardware speed |
| 90 | using supervisor and user modes. However, this also means |
| 91 | that KVM is not usable under PowerVM (pHyp), is only usable |
Thomas Huth | 129fd42 | 2015-05-22 11:41:01 +0200 | [diff] [blame] | 92 | on POWER7 or later processors, and cannot emulate a |
| 93 | different processor from the host processor. |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 94 | |
| 95 | If unsure, say N. |
| 96 | |
| 97 | config KVM_BOOK3S_64_PR |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 98 | tristate "KVM support without using hypervisor mode in host" |
| 99 | depends on KVM_BOOK3S_64 |
Aneesh Kumar K.V | 7aa7993 | 2013-10-07 22:17:51 +0530 | [diff] [blame] | 100 | select KVM_BOOK3S_PR_POSSIBLE |
Aneesh Kumar K.V | 9975f5e | 2013-10-07 22:17:52 +0530 | [diff] [blame] | 101 | ---help--- |
| 102 | Support running guest kernels in virtual machines on processors |
| 103 | without using hypervisor mode in the host, by running the |
| 104 | guest in user mode (problem state) and emulating all |
| 105 | privileged instructions and registers. |
| 106 | |
| 107 | This is not as fast as using hypervisor mode, but works on |
| 108 | machines where hypervisor mode is not available or not usable, |
| 109 | and can emulate processors that are different from the host |
| 110 | processor, including emulating 32-bit processors on a 64-bit |
| 111 | host. |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 112 | |
Paul Mackerras | b6c295d | 2015-03-28 14:21:02 +1100 | [diff] [blame] | 113 | config KVM_BOOK3S_HV_EXIT_TIMING |
| 114 | bool "Detailed timing for hypervisor real-mode code" |
| 115 | depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS |
| 116 | ---help--- |
| 117 | Calculate time taken for each vcpu in the real-mode guest entry, |
| 118 | exit, and interrupt handling code, plus time spent in the guest |
| 119 | and in nap mode due to idle (cede) while other threads are still |
| 120 | in the guest. The total, minimum and maximum times in nanoseconds |
| 121 | together with the number of executions are reported in debugfs in |
| 122 | kvm/vm#/vcpu#/timings. The overhead is of the order of 30 - 40 |
| 123 | ns per exit on POWER8. |
| 124 | |
| 125 | If unsure, say N. |
| 126 | |
Scott Wood | d30f6e4 | 2011-12-20 15:34:43 +0000 | [diff] [blame] | 127 | config KVM_BOOKE_HV |
| 128 | bool |
| 129 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 130 | config KVM_EXIT_TIMING |
| 131 | bool "Detailed exit timing" |
Alexander Graf | b2677b8 | 2014-07-25 10:38:59 +0200 | [diff] [blame] | 132 | depends on KVM_E500V2 || KVM_E500MC |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 133 | ---help--- |
| 134 | Calculate elapsed time for every exit/enter cycle. A per-vcpu |
| 135 | report is available in debugfs kvm/vm#_vcpu#_timing. |
| 136 | The overhead is relatively small, however it is not recommended for |
| 137 | production environments. |
| 138 | |
| 139 | If unsure, say N. |
| 140 | |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 141 | config KVM_E500V2 |
| 142 | bool "KVM support for PowerPC E500v2 processors" |
Kees Cook | 07ff8b5 | 2013-01-16 18:53:22 -0800 | [diff] [blame] | 143 | depends on E500 && !PPC_E500MC |
Hollis Blanchard | bc8080c | 2009-01-03 16:23:10 -0600 | [diff] [blame] | 144 | select KVM |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 145 | select KVM_MMIO |
Alexander Graf | 862d31f | 2012-07-31 00:19:50 +0200 | [diff] [blame] | 146 | select MMU_NOTIFIER |
Hollis Blanchard | bc8080c | 2009-01-03 16:23:10 -0600 | [diff] [blame] | 147 | ---help--- |
| 148 | Support running unmodified E500 guest kernels in virtual machines on |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 149 | E500v2 host processors. |
Hollis Blanchard | bc8080c | 2009-01-03 16:23:10 -0600 | [diff] [blame] | 150 | |
| 151 | This module provides access to the hardware capabilities through |
| 152 | a character device node named /dev/kvm. |
| 153 | |
| 154 | If unsure, say N. |
| 155 | |
Scott Wood | 73196cd | 2011-12-20 15:34:47 +0000 | [diff] [blame] | 156 | config KVM_E500MC |
Mihai Caraman | d9ce604 | 2013-04-11 00:03:14 +0000 | [diff] [blame] | 157 | bool "KVM support for PowerPC E500MC/E5500/E6500 processors" |
Kees Cook | 07ff8b5 | 2013-01-16 18:53:22 -0800 | [diff] [blame] | 158 | depends on PPC_E500MC |
Scott Wood | 73196cd | 2011-12-20 15:34:47 +0000 | [diff] [blame] | 159 | select KVM |
| 160 | select KVM_MMIO |
| 161 | select KVM_BOOKE_HV |
Alexander Graf | 862d31f | 2012-07-31 00:19:50 +0200 | [diff] [blame] | 162 | select MMU_NOTIFIER |
Scott Wood | 73196cd | 2011-12-20 15:34:47 +0000 | [diff] [blame] | 163 | ---help--- |
Mihai Caraman | d9ce604 | 2013-04-11 00:03:14 +0000 | [diff] [blame] | 164 | Support running unmodified E500MC/E5500/E6500 guest kernels in |
| 165 | virtual machines on E500MC/E5500/E6500 host processors. |
Scott Wood | 73196cd | 2011-12-20 15:34:47 +0000 | [diff] [blame] | 166 | |
| 167 | This module provides access to the hardware capabilities through |
| 168 | a character device node named /dev/kvm. |
| 169 | |
| 170 | If unsure, say N. |
| 171 | |
Scott Wood | 5df554a | 2013-04-12 14:08:46 +0000 | [diff] [blame] | 172 | config KVM_MPIC |
| 173 | bool "KVM in-kernel MPIC emulation" |
Alexander Graf | 447a03c | 2013-04-17 01:54:26 +0200 | [diff] [blame] | 174 | depends on KVM && E500 |
Alexander Graf | de9ba2f | 2013-04-16 17:42:19 +0200 | [diff] [blame] | 175 | select HAVE_KVM_IRQCHIP |
Paul Mackerras | 297e210 | 2014-06-30 20:51:13 +1000 | [diff] [blame] | 176 | select HAVE_KVM_IRQFD |
Alexander Graf | de9ba2f | 2013-04-16 17:42:19 +0200 | [diff] [blame] | 177 | select HAVE_KVM_IRQ_ROUTING |
| 178 | select HAVE_KVM_MSI |
Scott Wood | 5df554a | 2013-04-12 14:08:46 +0000 | [diff] [blame] | 179 | help |
| 180 | Enable support for emulating MPIC devices inside the |
| 181 | host kernel, rather than relying on userspace to emulate. |
| 182 | Currently, support is limited to certain versions of |
| 183 | Freescale's MPIC implementation. |
| 184 | |
Benjamin Herrenschmidt | bc5ad3f | 2013-04-17 20:30:26 +0000 | [diff] [blame] | 185 | config KVM_XICS |
| 186 | bool "KVM in-kernel XICS emulation" |
| 187 | depends on KVM_BOOK3S_64 && !KVM_MPIC |
Paul Mackerras | 25a2150b | 2014-06-30 20:51:14 +1000 | [diff] [blame] | 188 | select HAVE_KVM_IRQCHIP |
| 189 | select HAVE_KVM_IRQFD |
Anton Blanchard | 476ce5ef0 | 2014-12-03 13:30:42 +1100 | [diff] [blame] | 190 | default y |
Benjamin Herrenschmidt | bc5ad3f | 2013-04-17 20:30:26 +0000 | [diff] [blame] | 191 | ---help--- |
| 192 | Include support for the XICS (eXternal Interrupt Controller |
| 193 | Specification) interrupt controller architecture used on |
| 194 | IBM POWER (pSeries) servers. |
| 195 | |
Michael S. Tsirkin | 3a4d5c94e | 2010-01-14 06:17:27 +0000 | [diff] [blame] | 196 | source drivers/vhost/Kconfig |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 197 | |
| 198 | endif # VIRTUALIZATION |