linux_old1/Documentation
Roman Kagan d3457c877b kvm: x86: hyperv: make VP_INDEX managed by userspace
Hyper-V identifies vCPUs by Virtual Processor Index, which can be
queried via HV_X64_MSR_VP_INDEX msr.  It is defined by the spec as a
sequential number which can't exceed the maximum number of vCPUs per VM.
APIC ids can be sparse and thus aren't a valid replacement for VP
indices.

Current KVM uses its internal vcpu index as VP_INDEX.  However, to make
it predictable and persistent across VM migrations, the userspace has to
control the value of VP_INDEX.

This patch achieves that, by storing vp_index explicitly on vcpu, and
allowing HV_X64_MSR_VP_INDEX to be set from the host side.  For
compatibility it's initialized to KVM vcpu index.  Also a few variables
are renamed to make clear distinction betweed this Hyper-V vp_index and
KVM vcpu_id (== APIC id).  Besides, a new capability,
KVM_CAP_HYPERV_VP_INDEX, is added to allow the userspace to skip
attempting msr writes where unsupported, to avoid spamming error logs.

Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-07-14 16:28:18 +02:00
..
ABI DeviceTree for 4.13: 2017-07-07 10:37:54 -07:00
EDID drm: use .hword to represent 16-bit numbers 2017-03-30 10:15:19 +02:00
PCI docs: update old references for DocBook from the documentation 2017-05-16 08:44:19 -03:00
RCU rcu: Remove debugfs tracing 2017-06-08 18:52:43 -07:00
accounting
acpi This is the bulk of GPIO changes for the v4.13 series: 2017-07-07 12:40:27 -07:00
admin-guide Merge branch 'akpm' (patches from Andrew) 2017-07-06 22:27:08 -07:00
aoe
arm ARM: at91: Documentation: add armv7m families 2017-06-02 10:11:09 +02:00
arm64 arm64: Add workaround for Cavium Thunder erratum 30115 2017-06-15 09:45:04 +01:00
auxdisplay
backlight
blackfin
block block: remove bio_clone() and all references. 2017-06-18 12:40:59 -06:00
blockdev remove the mg_disk driver 2017-04-14 14:00:49 -06:00
bus-devices
cdrom cdrom: Make device operations read-only 2017-02-14 08:29:56 -07:00
cgroup-v1 Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2017-02-27 21:41:08 -08:00
cma
connector
console
core-api There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00
cpu-freq cpufreq: intel_pstate: Document the current behavior and user interface 2017-05-14 02:06:03 +02:00
cpuidle
cris
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-07-05 12:22:23 -07:00
dev-tools linux-kselftest-4.13-rc1-update 2017-07-07 14:04:47 -07:00
device-mapper dm zoned: drive-managed zoned block device target 2017-06-19 11:05:20 -04:00
devicetree main drm pull for v4.13 2017-07-09 18:48:37 -07:00
dmaengine
doc-guide kernel-doc: describe the ``literal`` syntax 2017-05-16 08:44:24 -03:00
driver-api This is the big bulk of pin control changes for the v4.13 series: 2017-07-06 11:38:59 -07:00
driver-model pci-v4.13-changes 2017-07-08 15:51:57 -07:00
early-userspace Documentation: Fix dead URLs to ftp.kernel.org 2017-03-29 15:46:06 -06:00
extcon extcon: Remove porting compatibility of swich class 2017-04-06 10:55:24 +09:00
fault-injection
fb docs: update old references for DocBook from the documentation 2017-05-16 08:44:19 -03:00
features powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
filesystems Writeback error handling fixes (pile #2) 2017-07-07 19:38:17 -07:00
firmware_class firmware: revamp firmware documentation 2017-01-11 09:42:59 +01:00
fmc
fpga fpga: Add scatterlist based programming 2017-02-10 15:20:44 +01:00
frv
gpio gpio: return NULL from gpiod_get_optional when GPIOLIB is disabled 2017-03-15 11:16:30 +01:00
gpu main drm pull for v4.13 2017-07-09 18:48:37 -07:00
hid Documentation: hid: fix path to input bus definitions 2017-03-13 17:15:19 -06:00
hwmon hwmon: (pmbus) move header file out of I2C realm 2017-06-11 17:08:19 -07:00
i2c i2c: i801: Add support for Intel Gemini Lake 2017-02-09 17:39:16 +01:00
ia64
ide
iio
infiniband IB/opa-vnic: Virtual Network Interface Controller (VNIC) documentation 2017-04-20 12:01:06 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2017-05-26 16:45:13 -07:00
ioctl scsi: cxlflash: Introduce host ioctl support 2017-06-26 15:01:11 -04:00
isdn
kbuild Kbuild thin archives updates for v4.13 2017-07-07 15:11:12 -07:00
kdump Documentation: kdump: describe arm64 port 2017-04-05 18:32:32 +01:00
kernel-hacking There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00
laptops platform/x86: thinkpad_acpi: Add support for X1 Yoga (2016) Tablet Mode 2016-12-13 09:29:06 -08:00
leds Documentaion: leds: leds-lp55xx.txt: Fix typos 2017-03-17 13:06:14 -06:00
lightnvm lightnvm: physical block device (pblk) target 2017-04-16 10:06:33 -06:00
livepatch livepatch: allow removal of a disabled patch 2017-03-08 09:38:43 +01:00
locking locking/ww_mutex/Documentation: Update the design document 2017-01-14 11:14:55 +01:00
m68k
md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2017-05-03 10:05:38 -07:00
media media updates for v4.13-rc1 2017-07-06 11:15:19 -07:00
memory-devices
metag
mic
mips
misc-devices Documentation: misc-devices: Add Documentation for pci-endpoint-test driver 2017-04-28 10:23:19 -05:00
mmc MMC core: 2017-05-02 17:34:32 -07:00
mn10300
mtd spi-nor: Add support for Intel SPI serial flash controller 2017-01-03 17:33:36 +00:00
namespaces
netlabel
networking doc: SKB_GSO_[IPIP|SIT] have been replaced 2017-07-08 11:25:56 +01:00
nfc
nios2
nvdimm
nvmem
parisc
pcmcia
perf perf: qcom: Add L3 cache PMU driver 2017-04-03 18:53:50 +01:00
phy
platform
power power supply and reset changes for the v4.13 series 2017-07-04 14:25:14 -07:00
powerpc powerpc updates for 4.13 2017-07-07 13:55:45 -07:00
pps Doc: clarify source of jitter in USB1.1, and USB2.0 2017-01-04 14:40:52 -07:00
process Kbuild thin archives updates for v4.13 2017-07-07 15:11:12 -07:00
pti
ptp
rapidio
s390 docs: add documentation for vfio-ccw 2017-03-31 12:55:11 +02:00
scheduler sched/deadline: Add documentation about GRUB reclaiming 2017-06-08 10:31:56 +02:00
scsi scsi: make asynchronous aborts mandatory 2017-04-06 13:07:33 -04:00
security docs: Fix some formatting issues in request-key.rst 2017-05-18 10:46:25 -06:00
serial tty: n_gsm: do not send/receive in ldisc close path 2017-06-03 18:48:52 +09:00
sh docs-rst: convert sh book to ReST 2017-05-16 08:44:18 -03:00
sound sound updates for 4.13-rc1 2017-07-06 10:56:51 -07:00
sparc Documentation/sparc: Steps for sending break on sunhv console 2017-02-23 08:27:25 -08:00
sphinx Docs: clean up some DocBook loose ends 2017-06-23 14:17:38 -06:00
sphinx-static
spi spi: Document SPI slave controller support 2017-05-26 13:11:00 +01:00
sysctl Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning 2017-04-21 13:22:34 -04:00
target Documentation/target: add an example script to configure an iSCSI target 2017-05-01 22:21:35 -07:00
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2017-05-12 11:58:45 -07:00
timers rcu: Eliminate NOCBs CPU-state Kconfig options 2017-06-08 18:52:43 -07:00
trace Char/Misc patches for 4.13-rc1 2017-07-03 20:55:59 -07:00
translations doc/kokr/howto: Only send regression fixes after -rc1 2017-06-22 10:25:22 -06:00
usb usb: gadget: add f_uac1 variant based on a new u_audio api 2017-06-19 09:22:47 +03:00
userspace-api doc: ReSTify no_new_privs.txt 2017-05-18 10:30:09 -06:00
virtual kvm: x86: hyperv: make VP_INDEX managed by userspace 2017-07-14 16:28:18 +02:00
vm ksm: introduce ksm_max_page_sharing per page deduplication limit 2017-07-06 16:24:31 -07:00
w1 w1: add documentation for w1_ds2438 2017-03-17 15:10:49 +09:00
watchdog iTCO_wdt: all versions count down twice 2017-05-19 10:42:11 +02:00
wimax
x86 x86/mce: Update bootlog description to reflect behavior on AMD 2017-06-14 07:32:10 +02:00
xtensa of: update ePAPR references to point to Devicetree Specification 2017-06-22 11:22:06 -05:00
.gitignore
00-INDEX linux-kselftest-4.13-rc1-update 2017-07-07 14:04:47 -07:00
Changes docs: add back 'Documentation/Changes' file (as symlink) 2016-12-14 16:30:12 -08:00
CodingStyle
DMA-API-HOWTO.txt dma-mapping: remove DMA_ERROR_CODE 2017-06-28 06:54:37 -07:00
DMA-API.txt Documentation: DMA API: fix a typo in a function name 2017-06-05 15:57:02 -06:00
DMA-ISA-LPC.txt Documentation: DMA-ISA-LPC.txt 2017-02-12 15:20:07 -07:00
DMA-attributes.txt common: DMA-mapping: add DMA_ATTR_PRIVILEGED attribute 2017-01-19 15:56:19 +00:00
IPMI.txt Documentation: Fix a typo in IPMI.txt. 2017-01-05 15:01:54 -06:00
IRQ-affinity.txt
IRQ-domain.txt Documentation: Update IRQ-domain.txt to document irq_domain_mapping 2017-05-22 22:29:45 +02:00
IRQ.txt
Intel-IOMMU.txt
Makefile docs: remove DocBook from the building system 2017-05-16 08:44:19 -03:00
SAK.txt
SM501.txt
SubmittingPatches
bcache.txt
bt8xxgpio.txt
btmrvl.txt
bus-virt-phys-mapping.txt
cachetlb.txt
cgroup-v2.txt mm/oom_kill: count global and memory cgroup oom kills 2017-07-06 16:24:35 -07:00
circular-buffers.txt
clk.txt
conf.py Docs: Fix breakage with Sphinx 1.5 and upper 2017-06-23 13:45:37 -06:00
cpu-load.txt
cputopology.txt docs: Fix a couple typos 2017-04-27 15:54:39 -06:00
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt docs: Fix a couple typos 2017-04-27 15:54:39 -06:00
dell_rbu.txt
digsig.txt
docutils.conf
dontdiff GCC plugin updates: 2017-07-05 11:46:59 -07:00
efi-stub.txt
eisa.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt gcc-plugins: update architecture list in documentation 2017-03-21 22:20:05 +11:00
highuid.txt
hw_random.txt
hwspinlock.txt
index.rst Make the main documentation title less Geocities 2017-06-23 14:02:27 -06:00
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
irqflags-tracing.txt
isa.txt
isapnp.txt
kernel-doc-nano-HOWTO.txt docs: update old references for DocBook from the documentation 2017-05-16 08:44:19 -03:00
kernel-per-CPU-kthreads.txt rcu: Eliminate NOCBs CPU-state Kconfig options 2017-06-08 18:52:43 -07:00
kobject.txt
kprobes.txt
kref.txt Revert "kref: double kref_put() in my_data_handler()" 2017-04-08 18:38:10 +02:00
ldm.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lsm.txt docs-rst: convert lsm from DocBook to ReST 2017-05-16 08:44:19 -03:00
lzo.txt
mailbox.txt
memory-barriers.txt There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00
memory-hotplug.txt scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
men-chameleon-bus.txt
nommu-mmap.txt
ntb.txt
numastat.txt
padata.txt
parport-lowlevel.txt
percpu-rw-semaphore.txt
phy.txt Documentation: phy: Fix repetition of word 'the' 2017-03-09 00:33:15 -07:00
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt vsprintf: Add %p extension "%pOF" for device tree 2017-06-27 12:36:40 -05:00
pwm.txt
rbtree.txt
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt
sgi-ioc4.txt
siphash.txt siphash: implement HalfSipHash1-3 for hash tables 2017-01-09 13:58:57 -05:00
smsc_ece1099.txt
static-keys.txt docs: Fix a couple typos 2017-04-27 15:54:39 -06:00
svga.txt
switchtec.txt switchtec: Add IOCTLs to the Switchtec driver 2017-04-12 12:23:37 -05:00
sync_file.txt sync_file.txt: standardize document format 2017-05-24 13:01:27 -03:00
tee.txt Documentation: tee subsystem and op-tee driver 2017-03-10 14:51:57 +01:00
this_cpu_ops.txt
unaligned-memory-access.txt Documentation/unaligned-memory-access.txt: fix incorrect comparison operator 2016-12-27 13:08:42 -07:00
vfio-mediated-device.txt docs: Fix a spelling error in vfio-mediated-device.txt 2017-04-27 15:54:39 -06:00
vfio.txt
video-output.txt
xillybus.txt
xz.txt
zorro.txt docs: Fix a couple typos 2017-04-27 15:54:39 -06:00