Paul Mackerras de56a948b9 KVM: PPC: Add support for Book3S processors in hypervisor mode ... This adds support for KVM running on 64-bit Book 3S processors, specifically POWER7, in hypervisor mode. Using hypervisor mode means that the guest can use the processor's supervisor mode. That means that the guest can execute privileged instructions and access privileged registers itself without trapping to the host. This gives excellent performance, but does mean that KVM cannot emulate a processor architecture other than the one that the hardware implements. This code assumes that the guest is running paravirtualized using the PAPR (Power Architecture Platform Requirements) interface, which is the interface that IBM's PowerVM hypervisor uses. That means that existing Linux distributions that run on IBM pSeries machines will also run under KVM without modification. In order to communicate the PAPR hypercalls to qemu, this adds a new KVM_EXIT_PAPR_HCALL exit code to include/linux/kvm.h. Currently the choice between book3s_hv support and book3s_pr support (i.e. the existing code, which runs the guest in user mode) has to be made at kernel configuration time, so a given kernel binary can only do one or the other. This new book3s_hv code doesn't support MMIO emulation at present. Since we are running paravirtualized guests, this isn't a serious restriction. With the guest running in supervisor mode, most exceptions go straight to the guest. We will never get data or instruction storage or segment interrupts, alignment interrupts, decrementer interrupts, program interrupts, single-step interrupts, etc., coming to the hypervisor from the guest. Therefore this introduces a new KVMTEST_NONHV macro for the exception entry path so that we don't have to do the KVM test on entry to those exception handlers. We do however get hypervisor decrementer, hypervisor data storage, hypervisor instruction storage, and hypervisor emulation assist interrupts, so we have to handle those. In hypervisor mode, real-mode accesses can access all of RAM, not just a limited amount. Therefore we put all the guest state in the vcpu.arch and use the shadow_vcpu in the PACA only for temporary scratch space. We allocate the vcpu with kzalloc rather than vzalloc, and we don't use anything in the kvmppc_vcpu_book3s struct, so we don't allocate it. We don't have a shared page with the guest, but we still need a kvm_vcpu_arch_shared struct to store the values of various registers, so we include one in the vcpu_arch struct. The POWER7 processor has a restriction that all threads in a core have to be in the same partition. MMU-on kernel code counts as a partition (partition 0), so we have to do a partition switch on every entry to and exit from the guest. At present we require the host and guest to run in single-thread mode because of this hardware restriction. This code allocates a hashed page table for the guest and initializes it with HPTEs for the guest's Virtual Real Memory Area (VRMA). We require that the guest memory is allocated using 16MB huge pages, in order to simplify the low-level memory management. This also means that we can get away without tracking paging activity in the host for now, since huge pages can't be paged or swapped. This also adds a few new exports needed by the book3s_hv code. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>		2011-07-12 13:16:54 +03:00
..
ABI	backlight: new driver for the ADP8870 backlight devices	2011-06-15 20:03:59 -07:00
accounting	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
acpi	ACPI: Split out custom_method functionality into an own driver	2011-05-29 01:50:40 -04:00
aoe	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
arm	Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable	2011-05-25 21:47:48 +01:00
auxdisplay	includecheck fix: Documentation, cfag12864b-example.c	2009-09-24 07:20:57 -07:00
blackfin	Blackfin: document SPI CS limitations with CPHA=0	2010-08-06 12:55:52 -04:00
block	Fix common misspellings	2011-03-31 11:26:23 -03:00
blockdev	cciss: add cciss_tape_cmds module paramter	2011-05-06 08:23:59 -06:00
cdrom	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cgroups	Documentation: fix cgroup blkio throttle filenames	2011-07-06 13:17:51 -07:00
connector	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
console	doc: fix console doc typo	2010-02-24 13:51:32 +01:00
cpu-freq	[CPUFREQ] Add documentation for sampling_down_factor	2011-03-16 17:54:31 -04:00
cpuidle
cris	fix random typos	2008-10-16 11:21:30 -07:00
crypto	async_tx: add support for asynchronous RAID6 recovery operations	2009-08-29 19:09:27 -07:00
development-process	docs: update the development process document	2011-03-25 14:30:31 -06:00
device-mapper	Fix common misspellings	2011-03-31 11:26:23 -03:00
devicetree	Merge branches 'devel', 'devel-stable' and 'fixes' into for-linus	2011-05-27 22:59:57 +01:00
DocBook	Merge git://git.infradead.org/mtd-2.6	2011-05-27 20:06:53 -07:00
driver-model	driver core: remove the driver-model structures from the documentation	2011-05-06 18:01:05 -07:00
dvb	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
early-userspace
fault-injection	lkdtm: add debugfs access and loosen KPROBE ties	2010-03-06 11:26:32 -08:00
fb	Fix common misspellings	2011-03-31 11:26:23 -03:00
filesystems	rcu: Use softirq to address performance regression	2011-06-14 15:25:39 -07:00
firmware_class	firmware: Update hotplug script	2010-08-05 13:53:34 -07:00
frv
hid	HID: Move hiddev.txt to the new Documentation/hid directory	2011-03-22 11:43:51 +01:00
hwmon	hwmon: (k10temp) Update documentation for Fam12h	2011-07-03 13:32:54 +02:00
i2c	i2c-i801: SMBus patch for Intel Panther Point DeviceIDs	2011-05-24 20:58:49 +02:00
i2o	Fix common misspellings	2011-03-31 11:26:23 -03:00
ia64	Fix common misspellings	2011-03-31 11:26:23 -03:00
ide	ide: preserve Host Protected Area by default (v2)	2009-06-07 13:52:52 +02:00
infiniband	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
input	Input: elantech - describe further the protocol	2011-05-16 22:48:24 -07:00
ioctl	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc	2011-05-25 16:55:55 -07:00
isdn	Fix common misspellings	2011-03-31 11:26:23 -03:00
ja_JP	HOWTO: sync up Documentaion/ja_JP/HOWTO	2011-04-19 16:53:45 -07:00
kbuild	Merge branch 'kconfig-for-40' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6	2011-05-25 16:54:01 -07:00
kdump	kdump: update kexec-tools URL and Vivek's email	2010-11-25 14:36:38 +01:00
ko_KR	Docs/Kconfig: Update: osdl.org -> linuxfoundation.org	2010-11-15 23:50:13 +01:00
laptops	acer-wmi: Delete out-of-date documentation	2011-05-27 12:36:46 -04:00
leds	Documentation: consolidate leds files to leds/ subdir	2011-04-04 17:51:47 -07:00
m68k
make	kbuild: introduce HDR_ARCH_LIST for headers_install_all	2010-12-14 22:16:19 +01:00
mips	Fix common misspellings	2011-03-31 11:26:23 -03:00
misc-devices	Fix common misspellings	2011-03-31 11:26:23 -03:00
mmc	mmc: MMC boot partitions support.	2011-05-24 21:01:21 -04:00
mn10300	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
mtd	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
namespaces
netlabel	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
networking	Merge branch 'docs-move' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs	2011-05-27 10:25:02 -07:00
nfc	NFC: Driver for NXP Semiconductors PN544 NFC chip.	2011-01-13 08:03:19 -08:00
parisc
PCI	Fix common misspellings	2011-03-31 11:26:23 -03:00
pcmcia	pcmcia: use autoconfiguration feature for ioports and iomem	2010-09-29 17:20:24 +02:00
power	PM / Runtime: Update documentation regarding driver removal	2011-07-02 14:27:11 +02:00
powerpc	Fix common misspellings	2011-03-31 11:26:23 -03:00
pps	pps: add parallel port PPS signal generator	2011-01-13 08:03:21 -08:00
prctl
pti	Kernel documentation for the PTI feature.	2011-05-13 16:31:00 -07:00
ptp	ptp: Added a brand new class driver for ptp clocks.	2011-05-23 13:01:00 -07:00
rapidio	rapidio: add RapidIO documentation	2011-03-23 19:46:41 -07:00
RCU	rcu: Decrease memory-barrier usage based on semi-formal proof	2011-05-26 09:42:23 -07:00
s390	Documentation: fix minor typos/spelling	2011-04-04 17:51:47 -07:00
scheduler	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
scsi	[SCSI] megaraid_sas: Version and Changelog update	2011-05-24 12:36:06 -04:00
security	Create Documentation/security/,	2011-05-19 15:59:38 -07:00
serial	Fix common misspellings	2011-03-31 11:26:23 -03:00
sh	sh: clkfwk: Kill off unused clk_set_rate_ex().	2010-11-15 18:25:12 +09:00
sound	Merge branch 'topic/hda' into for-linus	2011-05-22 10:01:35 +02:00
sparc	sparc: Remove Documentation/sparc/sbus_drivers.txt	2008-08-29 02:15:25 -07:00
spi	Fix common misspellings	2011-03-31 11:26:23 -03:00
sysctl	coredump: add support for exe_file in core name	2011-05-26 17:12:36 -07:00
target	[SCSI] tcm_mod_builder.py: Fix generated *_drop_nodeacl() handler	2011-03-23 11:36:45 -05:00
telephony	Fix common misspellings	2011-03-31 11:26:23 -03:00
thermal	thermal: Add event notification to thermal framework	2011-01-12 00:08:35 -05:00
timers	doc: timers-howto: fix a typo ("unsgined")	2011-05-17 10:52:02 +02:00
trace	sched: Get rid of lock_depth	2011-04-24 13:18:38 +02:00
usb	USB: Fix up URB error codes to reflect implementation.	2011-06-17 11:28:21 -07:00
video4linux	[media] uvcvideo: Add driver documentation	2011-05-20 09:30:36 -03:00
virtual	KVM: PPC: Add support for Book3S processors in hypervisor mode	2011-07-12 13:16:54 +03:00
vm	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
w1	Fix common misspellings	2011-03-31 11:26:23 -03:00
watchdog	Fix common misspellings	2011-03-31 11:26:23 -03:00
wimax	i2400m: documentation and instructions for usage	2009-01-07 10:00:18 -08:00
x86	x86, gart: Rename pci-gart_64.c to amd_gart_64.c	2011-05-10 17:22:06 +02:00
zh_CN	Translated Documentation/email-clients.txt	2011-05-06 17:59:20 -07:00
.gitignore	add random binaries to .gitignore	2010-04-08 11:34:34 +02:00
00-INDEX	Merge branch 'docs-security' into docs-move	2011-05-20 09:10:04 -07:00
applying-patches.txt
atomic_ops.txt	Documentation/atomic_ops.txt: avoid volatile in sample code	2011-05-26 17:12:34 -07:00
bad_memory.txt	Document handling of bad memory	2008-12-03 16:09:53 -07:00
basic_profiling.txt
binfmt_misc.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
braille-console.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
bt8xxgpio.txt	gpio: add bt8xxgpio driver	2008-07-25 10:53:30 -07:00
btmrvl.txt	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
BUG-HUNTING
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt	mm: convert mm->cpu_vm_cpumask into cpumask_var_t	2011-05-25 08:39:21 -07:00
Changes	Documentation/Changes: minor corrections	2011-03-22 17:44:17 -07:00
circular-buffers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
coccinelle.txt	scripts/coccinelle: update for compatability with Coccinelle 0.2.4	2010-12-03 12:27:01 +01:00
CodingStyle	Documentation: update CodingStyle memory allocators	2011-07-06 13:17:51 -07:00
cpu-hotplug.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
cpu-load.txt
cputopology.txt	topology/sysfs: Provide book id and siblings attributes	2010-09-09 20:41:25 +02:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt	ieee1394: update URLs in debugging-via-ohci1394.txt	2009-10-03 09:28:11 +02:00
dell_rbu.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
devices.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-10-28 09:35:11 -07:00
DMA-API-HOWTO.txt	Documentation: DMA-API-HOWTO.txt: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN	2010-08-14 11:56:46 -07:00
DMA-API.txt	dma-mapping: remove dma_is_consistent API	2010-08-11 08:59:21 -07:00
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt	dmaengine: Add API documentation for slave dma usage	2011-05-25 14:49:20 -07:00
dontdiff	Documentation: update dontdiff file	2011-05-23 15:14:11 -07:00
dynamic-debug-howto.txt	Merge branch 'docs-next' of git://git.lwn.net/linux-2.6	2011-03-27 19:46:59 -07:00
edac.txt	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
eisa.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
email-clients.txt	Documentation/email-clients.txt: update Thunderbird docs with wordwrap plugin	2011-01-13 08:03:15 -08:00
feature-removal-schedule.txt	Documentation/feature-removal-schedule.txt: remove ns_cgroup from feature-removal-schedule.txt	2011-06-15 20:04:02 -07:00
flexible-arrays.txt	flex_array: flex_array_prealloc takes a number of elements, not an end	2011-04-28 16:12:47 -04:00
futex-requeue-pi.txt	futex: add requeue-pi documentation	2009-05-09 07:12:50 +02:00
gcov.txt	trivial: fix typo in CONFIG_DEBUG_FS in gcov doc	2009-09-21 15:14:56 +02:00
gpio.txt	Revert "gpiolib: annotate gpio-intialization with __must_check"	2011-01-13 17:26:46 -08:00
highuid.txt
HOWTO	Documentation: update LXR web link	2011-05-23 15:14:11 -07:00
hw_random.txt
hwspinlock.txt	drivers: hwspinlock: add framework	2011-02-17 09:52:03 -08:00
init.txt	init/main.c: improve usability in case of init binary failure	2010-03-06 11:26:29 -08:00
initrd.txt
intel_txt.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
Intel-IOMMU.txt	intel-iommu: Kill DMAR_BROKEN_GFX_WA option.	2009-09-19 09:37:23 -07:00
io_ordering.txt
io-mapping.txt	io mapping: improve documentation	2008-11-03 18:21:44 +01:00
iostats.txt	Documentation/iostats.txt: bit-size reference etc.	2011-03-23 20:44:18 +01:00
IPMI.txt	IPMI: Add the document description of ipmi_get_smi_info	2010-12-14 00:22:00 -05:00
IRQ-affinity.txt	bitmap, irq: add smp_affinity_list interface to /proc/irq	2011-05-25 08:39:45 -07:00
IRQ.txt
irqflags-tracing.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	docbook: warn on unused doc entries	2010-09-11 16:49:21 -07:00
kernel-docs.txt	Documentation: update kernel-docs.txt	2011-01-06 09:59:38 -08:00
kernel-parameters.txt	usb-storage: redo incorrect reads	2011-06-07 09:05:42 -07:00
kmemcheck.txt	kmemcheck: update documentation	2009-07-01 22:36:22 +02:00
kmemleak.txt	Documentation: update kmemleak supported archs	2011-06-15 21:52:50 -07:00
kobject.txt	kobject: documentation: Update to refer to kset-example.c.	2010-03-19 07:12:20 -07:00
kprobes.txt	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
kref.txt	kref: Fix typo in kref documentation	2011-03-07 13:20:05 -08:00
ldm.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
local_ops.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
lockdep-design.txt	lockdep: Fix typos in documentation	2009-08-07 12:03:46 +02:00
lockstat.txt	Documentation: Add statistics about nested locks	2011-05-28 17:03:29 +02:00
logo.gif	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
logo.txt	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
magic-number.txt	take coda-private headers out of include/linux	2011-01-12 20:02:48 -05:00
Makefile	[media] Remove the old V4L1 v4lgrab.c file	2010-12-29 08:17:12 -02:00
ManagementStyle	docs: fix ManagementStyle book name	2008-10-30 11:38:46 -07:00
mca.txt
md.txt	md:Documentation/md.txt - fix typo	2011-06-09 11:43:04 +10:00
media-framework.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
memory-barriers.txt	smp: Document transitivity for memory barriers.	2011-03-04 08:05:49 -08:00
memory-hotplug.txt	memory hotplug: Allow memory blocks to span multiple memory sections	2011-02-03 16:08:57 -08:00
memory.txt	Documentation/memory.txt: remove some very outdated recommendations	2009-09-22 07:17:26 -07:00
mono.txt
mutex-design.txt	mutex: Fix annotations to include it in kernel-locking docbook	2010-09-03 08:19:51 +02:00
nmi_watchdog.txt	x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2	2008-10-30 19:07:04 +01:00
nommu-mmap.txt	nommu: fix malloc performance by adding uninitialized flag	2009-12-15 08:53:24 -08:00
numastat.txt	mm: fix NUMA accounting in numastat.txt	2009-09-22 07:17:39 -07:00
oops-tracing.txt	panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')	2010-05-19 08:37:43 +01:00
padata.txt	Documentation/padata.txt: fix typos etc.	2010-08-11 08:59:18 -07:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt	doc: capitalization and other minor fixes in pnp doc	2010-02-05 12:22:44 +01:00
preempt-locking.txt
printk-formats.txt	Documentation: update printk-formats.txt	2011-06-15 21:52:50 -07:00
prio_tree.txt
rbtree.txt	Documentation: remove anticipatory scheduler info	2010-11-11 12:09:59 +01:00
rfkill.txt	Document the rfkill sysfs ABI	2010-03-10 17:09:33 -05:00
robust-futex-ABI.txt	futex: documentation: fix inconsistent description of futex list_op_pending	2009-06-18 13:03:56 -07:00
robust-futexes.txt
rt-mutex-design.txt	variable name fix to Documentation/rt-mutex-design.txt	2010-06-05 17:39:09 +02:00
rt-mutex.txt
rtc.txt	RTC: Fix up rtc.txt documentation to reflect changes to generic rtc layer	2011-03-09 11:25:10 -08:00
SAK.txt	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
SecurityBugs	Fix common misspellings	2011-03-31 11:26:23 -03:00
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
sparse.txt	update email address	2010-07-19 10:56:54 +02:00
spinlocks.txt	locking: Remove deprecated lock initializers	2011-01-27 12:30:38 +01:00
stable_api_nonsense.txt	doc: stable_api_nonsense.txt: fix paragraph to make more sense.	2011-03-30 12:02:05 +02:00
stable_kernel_rules.txt	Documentation: -stable rules: upstream commit ID requirement reworded	2010-04-22 15:24:56 -07:00
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Fix common misspellings	2011-03-31 11:26:23 -03:00
SubmittingPatches	Documentation: update GregKH links	2011-05-23 15:14:11 -07:00
svga.txt
sysfs-rules.txt	Fix typos in comments	2010-03-16 11:47:56 +01:00
sysrq.txt	documentation: update sysrq.txt magic sysrq keys	2010-10-26 17:32:41 -07:00
unaligned-memory-access.txt	introduce HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig symbol	2008-07-25 10:53:27 -07:00
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt	Documentation: fix vgaarbiter.txt typos etc.	2011-05-23 15:14:11 -07:00
video-output.txt
volatile-considered-harmful.txt	Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation	2010-03-24 16:31:20 -07:00
workqueue.txt	workqueue: Document debugging tricks	2011-03-31 13:40:42 +02:00
xz.txt	decompressors: add XZ decompressor module	2011-01-13 08:03:24 -08:00
zorro.txt