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linux/arch/arm64/kvm
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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
2023-01-29 18:46:11 +00:00
..
hyp
KVM: arm64: Convert FSC_* over to ESR_ELx_FSC_*
2023-01-03 10:01:52 +00:00
vgic
KVM: arm64: Allow no running vcpu on saving vgic3 pending table
2023-01-29 18:46:11 +00:00
.gitignore
KVM: arm64: Generate hyp_constants.h for the host
2021-12-06 08:37:03 +00:00
arch_timer.c
Merge branch kvm-arm64/burn-the-flags into kvmarm-master/next
2022-06-29 10:30:10 +01:00
arm.c
KVM/arm64 updates for 6.2
2022-12-09 09:12:12 +01:00
debug.c
Merge branch kvm-arm64/single-step-async-exception into kvmarm-master/next
2022-09-19 10:59:29 +01:00
fpsimd.c
arm64/fp: Use a struct to pass data to fpsimd_bind_state_to_cpu()
2022-11-29 15:01:56 +00:00
guest.c
KVM: arm64: Pass the actual page address to mte_clear_page_tags()
2023-01-21 11:02:19 +00:00
handle_exit.c
KVM: arm64: Clear PSTATE.SS when the Software Step state was Active-pending
2022-09-19 10:48:53 +01:00
hypercalls.c
KVM: arm64: Fix hypercall bitmap writeback when vcpus have already run
2022-05-16 17:40:48 +01:00
inject_fault.c
KVM: arm64: Move vcpu PC/Exception flags to the input flag set
2022-06-10 09:54:34 +01:00
Kconfig
KVM: arm64: Enable ring-based dirty memory tracking
2022-11-10 13:11:58 +00:00
Makefile
KVM: arm64: Move nVHE stacktrace unwinding into its own compilation unit
2022-07-27 18:18:03 +01:00
mmio.c
KVM: arm64: Generalise VM features into a set of flags
2022-03-18 14:02:33 +00:00
mmu.c
KVM: arm64: Convert FSC_* over to ESR_ELx_FSC_*
2023-01-03 10:01:52 +00:00
pkvm.c
KVM: arm64: Return guest memory from EL2 via dedicated teardown memcache
2022-11-11 17:18:58 +00:00
pmu-emul.c
KVM: arm64: PMU: Fix period computation for 64bit counters with 32bit overflow
2022-12-05 12:05:51 +00:00
pmu.c
KVM: arm64: Pass pmu events to hyp via vcpu
2022-05-15 11:26:41 +01:00
psci.c
Merge branch kvm-arm64/psci-suspend into kvmarm-master/next
2022-05-16 17:48:20 +01:00
pvtime.c
KVM: arm64: Use kvm_write_guest_lock when init stolen time
2020-12-03 19:02:18 +00:00
reset.c
KVM: arm64: Consolidate stage-2 initialisation into a single function
2022-11-11 17:16:25 +00:00
stacktrace.c
arm64: stacktrace: track hyp stacks in unwinder's address space
2022-09-09 12:30:08 +01:00
sys_regs.c
KVM: arm64: PMU: Fix PMCR_EL0 reset value
2022-12-12 09:07:14 +00:00
sys_regs.h
KVM: arm64: Add a visibility bit to ignore user writes
2022-09-14 11:36:16 +01:00
trace_arm.h
KVM: Move arm64's MMU notifier trace events to generic code
2021-04-17 08:30:56 -04:00
trace_handle_exit.h
KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit
2021-08-20 11:12:18 +01:00
trace.h
KVM: arm64: Move virt/kvm/arm to arch/arm64
2020-05-16 15:03:59 +01:00
trng.c
KVM: arm64: Implement the TRNG hypervisor call
2021-01-25 22:19:31 +00:00
va_layout.c
arm64: alternatives: kvm: prepare for cap changes
2022-09-16 17:15:02 +01:00
vgic-sys-reg-v3.c
KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP
2022-07-17 11:55:33 +01:00
vmid.c
KVM: arm64: Fix inconsistent indenting
2022-06-07 15:27:05 +01:00