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Gavin Shan 6028acbe3a KVM: arm64: Allow no running vcpu on saving vgic3 pending table 
We don't have a running VCPU context to save vgic3 pending table due
to KVM_DEV_ARM_VGIC_{GRP_CTRL, SAVE_PENDING_TABLES} command on KVM
device "kvm-arm-vgic-v3". The unknown case is caught by kvm-unit-tests.

   # ./kvm-unit-tests/tests/its-pending-migration
   WARNING: CPU: 120 PID: 7973 at arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3325 \
   mark_page_dirty_in_slot+0x60/0xe0
    :
   mark_page_dirty_in_slot+0x60/0xe0
   __kvm_write_guest_page+0xcc/0x100
   kvm_write_guest+0x7c/0xb0
   vgic_v3_save_pending_tables+0x148/0x2a0
   vgic_set_common_attr+0x158/0x240
   vgic_v3_set_attr+0x4c/0x5c
   kvm_device_ioctl+0x100/0x160
   __arm64_sys_ioctl+0xa8/0xf0
   invoke_syscall.constprop.0+0x7c/0xd0
   el0_svc_common.constprop.0+0x144/0x160
   do_el0_svc+0x34/0x60
   el0_svc+0x3c/0x1a0
   el0t_64_sync_handler+0xb4/0x130
   el0t_64_sync+0x178/0x17c

Use vgic_write_guest_lock() to save vgic3 pending table.

Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230126235451.469087-5-gshan@redhat.com
History 2023-01-29 18:46:11 +00:00
..
ABI kernel hardening fixes for v6.2-rc1 2022-12-23 12:00:24 -08:00
accel doc: add documentation for accel subsystem 2022-11-22 13:14:52 +02:00
accounting filemap: make the accounting of thrashing more consistent 2022-09-26 19:46:06 -07:00
admin-guide IOMMU Updates for Linux v6.2 2022-12-19 08:34:39 -06:00
arc docs: ARC: Improve readability 2021-12-10 14:28:01 -07:00
arm Documentation: arm: marvell: Add Orion codenames and archive homepage 2022-11-01 17:13:03 -06:00
arm64 Revert "arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption" 2022-12-15 17:59:12 +00:00
block blk-crypto: don't use struct request_queue for public interfaces 2022-11-21 11:39:05 -07:00
bpf docs/bpf: Reword docs for BPF_MAP_TYPE_SK_STORAGE 2022-12-14 18:35:41 +01:00
cdrom It was a moderately busy cycle for documentation; highlights include: 2022-05-25 11:17:41 -07:00
core-api hardening updates for v6.2-rc1 2022-12-14 12:20:00 -08:00
cpu-freq cpufreq: Remove CVS version control contents from documentation 2022-12-06 12:24:51 +01:00
crypto crypto: doc - use correct function name 2022-11-04 17:35:44 +08:00
dev-tools linux-kselftest-kunit-next-6.2-rc1 2022-12-12 16:42:57 -08:00
devicetree More sound updates for 6.2-rc1 2022-12-23 11:15:48 -08:00
doc-guide Merge branch 'alabaster-rb' into docs-mw 2022-10-18 16:29:50 -06:00
driver-api dmaengine updates for v6.2 2022-12-19 08:54:17 -06:00
fault-injection debugfs: fix error when writing negative value to atomic_t debugfs file 2022-11-30 16:13:16 -08:00
fb docs/fb: Document current named modes 2022-11-15 10:07:40 +01:00
features RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
filesystems ntfs3 for 6.2 2022-12-21 10:18:17 -08:00
firmware-guide Merge branches 'acpi-misc', 'acpi-tools' and 'acpi-docs' 2022-10-03 20:03:49 +02:00
firmware_class firmware: revamp firmware documentation 2017-01-11 09:42:59 +01:00
fpga Documentation: fpga: dfl: add link address of feature id table 2022-05-10 16:05:27 +08:00
gpu drm/amdgpu: add GART, GPUVM, and GTT to glossary 2022-12-02 10:05:33 -05:00
hid Documentation: Add leading slash to some paths 2021-03-31 13:49:19 -06:00
hwmon hwmon: (aquacomputer_d5next) Add support for Quadro flow sensor pulses 2022-12-04 16:45:03 -08:00
i2c docs: i2c: slave-interface: return errno when handle I2C_SLAVE_WRITE_REQUESTED 2022-09-28 21:41:59 +02:00
ia64 docs: ia64: Fix a typo ("identify mappings") 2022-11-09 14:03:51 -07:00
iio docs: iio: add documentation for BNO055 driver 2022-09-21 18:42:56 +01:00
images docs: add SVG version of the Linux logo 2022-06-01 09:32:45 -06:00
infiniband RDMA/core: Remove FMR device ops 2020-06-02 20:32:54 -03:00
input Merge branch 'next' into for-linus 2022-10-09 22:30:23 -07:00
isdn isdn: capi: dead code removal 2019-12-11 09:12:38 +01:00
kbuild Documentation: kbuild: Add description of git for reproducible builds 2022-10-28 00:16:29 +09:00
kernel-hacking Updates for timers, timekeeping and drivers: 2022-12-12 12:52:02 -08:00
leds leds: qcom-lpg: Require pattern to follow documentation 2022-05-24 22:08:10 +02:00
litmus-tests Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test 2020-06-29 12:05:18 -07:00
livepatch doc: module: update file references 2022-07-01 14:50:01 -07:00
locking Remove duplicate words inside documentation 2022-09-27 13:21:43 -06:00
loongarch This was a not-too-busy cycle for documentation; highlights include: 2022-12-12 17:18:50 -08:00
m68k video: fbdev: atari: Fix inverse handling 2022-07-18 07:56:17 +02:00
maintainer docs, nvme: add a feature and quirk policy document 2022-12-28 05:37:12 -10:00
mhi docs: Add documentation for MHI bus 2020-03-19 07:41:04 +01:00
mips docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
misc-devices Documentation: Wire Oxford Semiconductor PCIe (Tornado) 950 2022-05-19 18:24:22 +02:00
mm MM patches for 6.2-rc1. 2022-12-13 19:29:45 -08:00
netlabel docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
networking Documentation: devlink: add missing toc entry for etas_es58x devlink doc 2022-12-19 16:08:27 +01:00
nios2 docs: nios2: add missing ReST file 2020-12-07 08:35:21 -07:00
nvdimm nvdimm: fixes to maintainter-entry-profile 2020-05-25 10:19:19 -06:00
nvme docs, nvme: add a feature and quirk policy document 2022-12-28 05:37:12 -10:00
openrisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
parisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
PCI cxl for 6.2 2022-12-12 13:55:31 -08:00
pcmcia docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
peci docs: Add PECI documentation 2022-02-09 08:04:44 +01:00
power Merge branches 'pm-devfreq', 'pm-qos', 'pm-tools' and 'pm-docs' 2022-07-29 19:46:00 +02:00
powerpc docs: powerpc: add POWER9 and POWER10 to CPU families 2022-11-24 23:31:47 +11:00
process Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
RCU Updates for timers, timekeeping and drivers: 2022-12-12 12:52:02 -08:00
riscv RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
rust x86: enable initial Rust support 2022-09-28 09:02:45 +02:00
s390 vfio/mdev: embedd struct mdev_parent in the parent data structure 2022-10-04 12:06:58 -06:00
scheduler docs: scheduler: Update new path for the sysctl knobs 2022-09-27 13:21:42 -06:00
scsi scsi: core: Change the return type of .eh_timed_out() 2022-10-22 03:25:59 +00:00
security KEYS: encrypted: fix key instantiation with user-provided data 2022-10-19 13:01:23 -04:00
sh docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sound ALSA: doc: Drop snd_dma_continuous_data() usages 2022-08-24 08:00:26 +02:00
sparc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sphinx docs: sphinx-pre-install: don't require the RTD theme 2022-10-13 11:14:43 -06:00
sphinx-static docs: Don't wire font sizes for HTML output 2022-11-01 15:59:40 -06:00
spi spi: pxa2xx_spi: Convert to use GPIO descriptors 2022-01-31 15:17:27 +00:00
staging docs: put atomic*.txt and memory-barriers.txt into the core-api book 2022-09-29 12:55:06 -06:00
target tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
timers Documentation: Replace del_timer/del_timer_sync() 2022-11-24 15:09:11 +01:00
tools Documentation/rv: Add verification/rv man pages 2022-12-09 18:06:24 -05:00
trace Trace probes updates for 6.2: 2022-12-21 18:57:24 -08:00
translations This was a not-too-busy cycle for documentation; highlights include: 2022-12-12 17:18:50 -08:00
usb Documentation: USB: correct possessive "its" usage 2022-11-21 14:33:23 -07:00
userspace-api iommufd for 6.2 2022-12-14 09:15:43 -08:00
virt KVM: arm64: Allow no running vcpu on saving vgic3 pending table 2023-01-29 18:46:11 +00:00
w1 Documentation: W1: minor typo corrections 2022-09-27 13:21:44 -06:00
watchdog watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers 2022-07-20 21:57:39 +10:00
x86 Add TDX guest attestation infrastructure and driver 2022-12-12 14:27:49 -08:00
xtensa A much quieter cycle for documentation (happily), with, one hopes, the bulk 2020-12-14 16:55:54 -08:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
arch.rst Documentation: LoongArch: Add basic documentations 2022-06-03 20:09:27 +08:00
atomic_bitops.txt wait_on_bit: add an acquire memory barrier 2022-08-26 09:30:25 -07:00
atomic_t.txt Documentation/atomic_t: Document forward progress expectations 2021-08-04 15:16:47 +02:00
Changes docs: add back 'Documentation/Changes' file (as symlink) 2016-12-14 16:30:12 -08:00
CodingStyle doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
conf.py docs/sphinx: More depth in the rtd sidebar toc 2022-11-09 13:28:40 -07:00
docutils.conf doc-rst: Add missing newline at end of file 2019-06-20 14:16:56 -06:00
dontdiff randstruct: Move seed generation into scripts/basic/ 2022-05-08 01:33:07 -07:00
index.rst Rust introduction for v6.1-rc1 2022-10-03 16:39:37 -07:00
Kconfig docs: Kconfig: Fix help text indentation 2022-06-13 11:33:43 -06:00
Makefile doc: add texinfodocs and infodocs targets 2022-11-21 14:13:57 -07:00
memory-barriers.txt docs/memory-barriers.txt: Add a missed closing parenthesis 2022-10-18 15:14:52 -07:00
SubmittingPatches doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
subsystem-apis.rst doc: add documentation for accel subsystem 2022-11-22 13:14:52 +02:00