Vitaly Kuznetsov 561dbb41b1 i386: Make migration fail when Hyper-V reenlightenment was enabled but 'user_tsc_khz' is unset ... KVM doesn't fully support Hyper-V reenlightenment notifications on migration. In particular, it doesn't support emulating TSC frequency of the source host by trapping all TSC accesses so unless TSC scaling is supported on the destination host and KVM_SET_TSC_KHZ succeeds, it is unsafe to proceed with migration. KVM_SET_TSC_KHZ is called from two sites: kvm_arch_init_vcpu() and kvm_arch_put_registers(). The later (intentionally) doesn't propagate errors allowing migrations to succeed even when TSC scaling is not supported on the destination. This doesn't suit 're-enlightenment' use-case as we have to guarantee that TSC frequency stays constant. Require 'tsc-frequency=' command line option to be specified for successful migration when re-enlightenment was enabled by the guest. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210319123801.1111090-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-03-19 08:48:18 -04:00
..
_templates	docs: add "page source" link to sphinx documentation	2020-11-10 08:51:30 +01:00
config	docs: Grammar and spelling fixes	2018-07-13 10:16:04 +01:00
devel	Remove many old deprecated features	2021-03-18 19:00:50 +00:00
interop	parallels.txt: fix bitmap L1 table description	2021-03-08 14:56:54 +01:00
specs	m68k: add a system controller	2021-03-15 21:02:57 +01:00
sphinx	docs/sphinx/qapidoc.py: Handle change of QAPI's builtin module name	2021-02-15 14:59:11 +00:00
spin	docs: create config/, devel/ and spin/ subdirectories	2017-06-07 18:22:03 +02:00
system	block: remove support for using "file" driver with block/char devices	2021-03-18 09:22:55 +00:00
tools	docs: qsd: Explain --export nbd,name=... default	2021-03-08 14:56:55 +01:00
user	docs/user: Remove outdated 'Quick Start' section	2021-02-15 12:09:20 +01:00
amd-memory-encryption.txt	confidential guest support: Update documentation	2021-02-08 16:57:38 +11:00
barrier.txt	ui: add an embedded Barrier client	2019-09-17 13:43:22 +02:00
block-replication.txt	colo: Update Documentation for continuous replication	2020-03-03 18:04:47 +08:00
bootindex.txt	docs qemu-doc: Avoid ide-drive, it's deprecated	2017-06-04 18:42:55 +03:00
can.txt	docs: Fix some typos (found by codespell)	2020-11-18 09:29:41 +01:00
ccid.txt	docs: update to show preferred boolean syntax for -chardev	2021-02-25 14:14:33 +01:00
COLO-FT.txt	docs: update to show preferred boolean syntax for -cpu	2021-02-25 14:14:33 +01:00
colo-proxy.txt	docs: update to show preferred boolean syntax for -chardev	2021-02-25 14:14:33 +01:00
conf.py	docs: Build and install all the docs in a single manual	2021-01-19 15:45:14 +00:00
confidential-guest-support.txt	s390: Recognize confidential-guest-support option	2021-02-08 16:57:38 +11:00
defs.rst.inc	docs/system: convert Texinfo documentation to rST	2020-03-06 10:05:12 +00:00
hyperv.txt	i386: Make migration fail when Hyper-V reenlightenment was enabled but 'user_tsc_khz' is unset	2021-03-19 08:48:18 -04:00
igd-assign.txt	vfio/pci: Add IGD documentation	2016-05-26 11:12:05 -06:00
image-fuzzer.txt	docs: List all image elements currently supported by the fuzzer	2014-09-22 11:39:35 +01:00
index.rst	docs/index.rst, docs/index.html.in: Reorder manuals	2020-03-12 11:14:06 +00:00
memory-hotplug.txt	docs: Grammar and spelling fixes	2018-07-13 10:16:04 +01:00
meson.build	docs: don't install corresponding man page if guest agent is disabled	2021-02-08 14:43:55 +01:00
multi-thread-compression.txt	Replace '-enable-kvm' with '-accel kvm' in docs and help texts	2018-06-28 19:05:32 +02:00
multiseat.txt	tests/docker/test-mingw and docs: Remove --with-sdlabi=2.0	2019-02-04 15:25:21 +00:00
nvdimm.txt	nvdimm: check -object memory-backend-file, readonly=on option	2021-02-01 17:07:34 -05:00
papr-pef.txt	spapr: Add PEF based confidential guest support	2021-02-08 16:57:38 +11:00
pci_expander_bridge.txt	pxb: cleanup	2016-03-11 16:59:12 +02:00
pcie_pci_bridge.txt	pci: removed the is_express field since a uniform interface was inserted	2018-02-08 21:06:41 +02:00
pcie.txt	docs: pcie: Spell out machine type needs for PCIe features	2018-03-01 16:25:37 +02:00
pvrdma.txt	docs: Fix broken links	2020-09-01 09:31:33 +02:00
qcow2-cache.txt	qcow2: Document the Extended L2 Entries feature	2020-08-25 08:33:20 +02:00
qdev-device-use.txt	hw/ide: remove 'ide-drive' device	2021-03-18 09:22:55 +00:00
qemu_logo.pdf	docs: add qemu logo to pdf	2017-01-16 10:11:43 +01:00
qemu-option-trace.rst.inc	qemu-option-trace.rst.inc: Don't use option:: markup	2020-11-02 16:52:18 +00:00
qemupciserial.inf	docs: Grammar and spelling fixes	2018-07-13 10:16:04 +01:00
rdma.txt	migrate: remove QMP/HMP commands for speed, downtime and cache size	2021-03-18 09:22:55 +00:00
replay.txt	docs: Fix some typos (found by codespell)	2020-11-18 09:29:41 +01:00
spice-port-fqdn.txt	docs: add spice-port-fqdn.txt	2012-12-17 14:01:41 +01:00
throttle.txt	docs: Document the throttle block filter	2020-10-02 15:46:40 +02:00
u2f.txt	hw/usb: Add U2F device autoscan to passthru mode	2020-08-31 08:23:39 +02:00
usb2.txt	docs/usb2.txt: ehci has six ports	2018-08-21 10:22:03 +02:00
usb-storage.txt	usb: Fix typo in documentation	2017-01-24 23:26:52 +03:00
virtio-balloon-stats.txt	Remove the deprecated -balloon option	2018-08-31 09:52:13 +02:00
xbzrle.txt	migrate: remove QMP/HMP commands for speed, downtime and cache size	2021-03-18 09:22:55 +00:00
xen-save-devices-state.txt	Fix up dangling references to qmp-commands.* in comment and doc	2018-03-02 13:48:26 -06:00