Longpeng(Mike) 199b5763d3 KVM: add spinlock optimization framework ...

If a vcpu exits due to request a user mode spinlock, then
the spinlock-holder may be preempted in user mode or kernel mode.
(Note that not all architectures trap spin loops in user mode,
only AMD x86 and ARM/ARM64 currently do).

But if a vcpu exits in kernel mode, then the holder must be
preempted in kernel mode, so we should choose a vcpu in kernel mode
as a more likely candidate for the lock holder.

This introduces kvm_arch_vcpu_in_kernel() to decide whether the
vcpu is in kernel-mode when it's preempted.  kvm_vcpu_on_spin's
new argument says the same of the spinning VCPU.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2017-08-08 10:57:43 +02:00

..

cpuid.c

KVM: cpuid: Fix read/write out-of-bounds vulnerability in cpuid emulation

2017-06-08 15:38:21 +02:00

cpuid.h

KVM: x86: use general helpers for some cpuid manipulation

2017-08-07 16:16:30 +02:00

debugfs.c

kvm: x86: export TSC information to user-space

2016-09-16 16:57:48 +02:00

emulate.c

PPC:

2017-07-06 18:38:31 -07:00

hyperv.c

KVM: add spinlock optimization framework

2017-08-08 10:57:43 +02:00

hyperv.h

kvm: x86: hyperv: make VP_INDEX managed by userspace

2017-07-14 16:28:18 +02:00

i8254.c

KVM: x86: take slots_lock in kvm_free_pit

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

i8254.h

KVM: x86: Handle the kthread worker using the new API

2016-12-08 15:31:11 +01:00

i8259.c

KVM: x86: simplify pic_ioport_read()

2017-04-12 20:17:15 +02:00

ioapic.c

KVM: x86: rename kvm_vcpu_request_scan_ioapic()

2017-04-12 20:17:14 +02:00

ioapic.h

KVM: x86: convert kvm_(set|get)_ioapic() into void

2017-04-12 20:17:14 +02:00

irq_comm.c

KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING

2017-05-02 14:45:45 +02:00

irq.c

KVM: x86: get rid of pic_irqchip()

2017-04-12 20:17:13 +02:00

irq.h

KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING

2017-05-02 14:45:45 +02:00

Kconfig

x86: add MULTIUSER dependency for KVM

2017-07-19 16:19:14 +02:00

kvm_cache_regs.h

KVM, pkeys: add pkeys support for permission_fault

2016-03-22 16:23:37 +01:00

lapic.c

KVM: hyperv: support HV_X64_MSR_TSC_FREQUENCY and HV_X64_MSR_APIC_FREQUENCY

2017-08-07 15:26:06 +02:00

lapic.h

KVM: hyperv: support HV_X64_MSR_TSC_FREQUENCY and HV_X64_MSR_APIC_FREQUENCY

2017-08-07 15:26:06 +02:00

Makefile

KVM: x86: drop legacy device assignment

2017-04-07 16:49:00 +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: generalize guest_cpuid_has_ helpers

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

mmu.h

KVM: async_pf: Add L1 guest async_pf #PF vmexit handler

2017-07-14 14:25:24 +02:00

mmutrace.h

kvm: x86: mmu: allow A/D bits to be disabled in an mmu

2017-07-03 11:19:54 +02:00

mtrr.c

KVM: x86: generalize guest_cpuid_has_ helpers

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

page_track.c

mm: introduce kv[mz]alloc helpers

2017-05-08 17:15:12 -07:00

paging_tmpl.h

KVM: nVMX: fix EPT permissions as reported in exit qualification

2017-05-15 18:22:40 +02:00

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/vPMU: fix undefined shift in intel_pmu_refresh()

2017-05-19 19:59:27 +02:00

pmu.c

KVM: x86: never specify a sample period for virtualized in_tx_cp counters

2017-03-01 14:19:46 +01:00

pmu.h

KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch

2015-06-23 14:12:14 +02:00

svm.c

KVM: add spinlock optimization framework

2017-08-08 10:57:43 +02:00

trace.h

KVM: x86: support using the vmx preemption timer for tsc deadline timer

2016-06-16 10:07:48 +02:00

tss.h

…

vmx.c

KVM: add spinlock optimization framework

2017-08-08 10:57:43 +02:00

x86.c

KVM: add spinlock optimization framework

2017-08-08 10:57:43 +02:00

x86.h

kvm: better MWAIT emulation for guests

2017-04-21 12:50:28 +02:00