Wanpeng Li 4c27625b7a KVM: X86: Lower the default timer frequency limit to 200us ...

Anthoine reported:
 The period used by Windows change over time but it can be 1
 milliseconds or less. I saw the limit_periodic_timer_frequency
 print so 500 microseconds is sometimes reached.

As suggested by Paolo, lower the default timer frequency limit to a
smaller interval of 200 us (5000 Hz) to leave some headroom. This
is required due to Windows 10 changing the scheduler tick limit
from 1024 Hz to 2048 Hz.

Reported-by: Anthoine Bourgeois <anthoine.bourgeois@blade-group.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Anthoine Bourgeois <anthoine.bourgeois@blade-group.com>
Cc: Darren Kenny <darren.kenny@oracle.com>
Cc: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2018-05-15 11:56:21 +02:00

..

cpuid.c

KVM: X86: Provide a capability to disable HLT intercepts

2018-03-16 22:03:52 +01:00

cpuid.h

KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX

2018-02-03 23:06:51 +01:00

debugfs.c

…

emulate.c

kvm: Add emulation for movups/movupd

2018-04-04 17:52:46 +02:00

hyperv.c

KVM: hyperv: idr_find needs RCU protection

2018-05-11 11:21:11 +02:00

hyperv.h

kvm: x86: hyperv: guest->host event signaling via eventfd

2018-03-06 18:40:36 +01:00

i8254.c

KVM: x86: take slots_lock in kvm_free_pit

2017-07-12 22:38:26 +02:00

i8254.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

i8259.c

…

ioapic.c

KVM: x86: ioapic: Preserve read-only values in the redirection table

2017-11-17 13:20:21 +01:00

ioapic.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

irq_comm.c

…

irq.c

KVM: x86: Rename interrupt.pending to interrupt.injected

2018-03-28 22:47:06 +02:00

irq.h

…

Kconfig

KVM: x86: prefer "depends on" to "select" for SEV

2018-01-16 16:38:32 +01:00

kvm_cache_regs.h

KVM: nVMX: Do not load EOI-exitmap while running L2

2018-03-21 14:16:44 +01:00

lapic.c

KVM: x86: remove APIC Timer periodic/oneshot spikes

2018-05-05 23:09:39 +02:00

lapic.h

x86/kvm: rename HV_X64_MSR_APIC_ASSIST_PAGE to HV_X64_MSR_VP_ASSIST_PAGE

2018-03-28 22:47:06 +02:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmu_audit.c

KVM: x86: MMU: make array audit_point_name static

2017-12-14 09:26:41 +01:00

mmu.c

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-04-09 11:42:31 -07:00

mmu.h

Merge tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2017-11-16 13:00:24 -08:00

mmutrace.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mtrr.c

KVM: x86: generalize guest_cpuid_has_ helpers

2017-08-07 16:11:50 +02:00

page_track.c

locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()

2017-10-25 11:01:08 +02:00

paging_tmpl.h

KVM: x86: Update the exit_qualification access bits while walking an address

2018-03-16 22:01:30 +01:00

pmu_amd.c

KVM: x86: Add support for AMD Core Perf Extension in guest

2018-03-16 22:01:28 +01:00

pmu_intel.c

…

pmu.c

KVM: x86: Add support for VMware backdoor Pseudo-PMCs

2018-03-16 22:02:01 +01:00

pmu.h

KVM: x86: Add support for VMware backdoor Pseudo-PMCs

2018-03-16 22:02:01 +01:00

svm.c

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-04-16 11:24:28 -07:00

trace.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tss.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vmx_evmcs.h

x86/kvm: use Enlightened VMCS when running on Hyper-V

2018-03-28 22:47:06 +02:00

vmx_shadow_fields.h

KVM: nVMX: track dirty state of non-shadowed VMCS fields

2018-01-16 16:50:13 +01:00

vmx.c

KVM: vmx: update sec exec controls for UMIP iff emulating UMIP

2018-05-11 11:21:13 +02:00

x86.c

KVM: X86: Lower the default timer frequency limit to 200us

2018-05-15 11:56:21 +02:00

x86.h

x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI

2018-04-27 18:37:17 +02:00