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Zelin Deng b428bc247f KVM: x86: Update vCPU's hv_clock before back to guest when tsc_offset is adjusted 
commit d9130a2dfdd4b21736c91b818f87dbc0ccd1e757 upstream.

When MSR_IA32_TSC_ADJUST is written by guest due to TSC ADJUST feature
especially there's a big tsc warp (like a new vCPU is hot-added into VM
which has been up for a long time), tsc_offset is added by a large value
then go back to guest. This causes system time jump as tsc_timestamp is
not adjusted in the meantime and pvclock monotonic character.
To fix this, just notify kvm to update vCPU's guest time before back to
guest.

Cc: stable@vger.kernel.org
Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1619576521-81399-2-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-22 11:43:02 +02:00
..
assigned-dev.c
KVM: x86: use list_for_each_entry*
2016-02-23 15:40:54 +01:00
assigned-dev.h
…
cpuid.c
KVM: x86: Use guest MAXPHYADDR from CPUID.0x8000_0008 iff TDP is enabled
2021-07-20 16:21:10 +02:00
cpuid.h
x86/bugs: Add AMD's SPEC_CTRL MSR usage
2019-05-14 19:19:33 +02:00
debugfs.c
kvm: x86: export TSC information to user-space
2016-09-16 16:57:48 +02:00
emulate.c
KVM: x86: clflushopt should be treated as a no-op by emulation
2020-11-22 09:58:14 +01:00
hyperv.c
KVM: x86: Protect kvm_hv_msr_[get|set]_crash_data() from Spectre-v1/L1TF attacks
2020-02-14 16:31:04 -05:00
hyperv.h
KVM: x86: Hyper-V tsc page setup
2016-09-20 09:26:20 +02:00
i8254.c
kthread: kthread worker API cleanup
2016-10-11 15:06:33 -07:00
i8254.h
KVM: i8254: turn kvm_kpit_state.reinject into atomic_t
2016-03-04 09:30:25 +01:00
i8259.c
KVM: x86: clean/fix memory barriers in irqchip_in_kernel
2015-07-30 16:02:56 +02:00
ioapic.c
x86/kvm: fix vcpu-id indexed array sizes
2021-08-04 11:58:02 +02:00
ioapic.h
x86/kvm: fix vcpu-id indexed array sizes
2021-08-04 11:58:02 +02:00
iommu.c
- ARM: GICv3 ITS emulation and various fixes. Removal of the old
2016-08-02 16:11:27 -04:00
irq_comm.c
KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
2020-02-28 15:42:49 +01:00
irq.c
x86/kvm: Audit and remove any unnecessary uses of module.h
2016-07-14 15:07:00 +02:00
irq.h
KVM: Move kvm_setup_default/empty_irq_routing declaration in arch specific header
2016-07-22 18:52:00 +01:00
Kconfig
KVM: add X86_LOCAL_APIC dependency
2018-02-25 11:05:54 +01:00
kvm_cache_regs.h
KVM, pkeys: add pkeys support for permission_fault
2016-03-22 16:23:37 +01:00
lapic.c
KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled
2020-08-21 11:01:52 +02:00
lapic.h
KVM: x86: flush pending lapic jump label updates on module unload
2017-01-19 20:17:59 +01:00
Makefile
kvm: add stubs for arch specific debugfs support
2016-09-16 16:57:47 +02:00
mmu_audit.c
kvm: rename pfn_t to kvm_pfn_t
2016-01-15 17:56:32 -08:00
mmu.c
KVM: x86/mmu: Treat NX as used (not reserved) for all !TDP shadow MMUs
2021-09-03 09:44:40 +02:00
mmu.h
kvm: x86: mmu: Recovery of shattered NX large pages
2019-11-16 10:29:57 +01:00
mmutrace.h
KVM: x86: fix incorrect comparison in trace event
2020-10-01 20:40:08 +02:00
mtrr.c
KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks
2020-02-14 16:31:04 -05:00
page_track.c
KVM: x86: cleanup the page tracking SRCU instance
2017-03-31 10:31:45 +02:00
paging_tmpl.h
kvm: mmu: ITLB_MULTIHIT mitigation
2019-11-16 10:29:55 +01:00
pmu_amd.c
perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2
2016-09-16 16:19:49 +02:00
pmu_intel.c
KVM: x86/pmu: Fix HW_REF_CPU_CYCLES event pseudo-encoding in intel_arch_events[]
2021-02-03 23:19:50 +01:00
pmu.c
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
2019-08-04 09:33:27 +02:00
pmu.h
KVM: x86: Protect MSR-based index computations in pmu.h from Spectre-v1/L1TF attacks
2020-02-14 16:31:04 -05:00
svm.c
KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653)
2021-08-26 08:37:25 -04:00
trace.h
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
2019-05-16 19:43:42 +02:00
tss.h
…
vmx.c
KVM: VMX: Don't freeze guest when event delivery causes an APIC-access exit
2020-09-23 08:46:13 +02:00
x86.c
KVM: x86: Update vCPU's hv_clock before back to guest when tsc_offset is adjusted
2021-09-22 11:43:02 +02:00
x86.h
KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system
2018-06-16 09:52:33 +02:00