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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 18:27:09 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 18:27:09 (GMT) |
commit | 7beaa24ba49717419e24d1f6321e8b3c265a719c (patch) | |
tree | a5c5433d3c7bfc4c23e67174463ccf519c8406f0 /arch/x86/kvm/x86.c | |
parent | 07b75260ebc2c789724c594d7eaf0194fa47b3be (diff) | |
parent | 9842df62004f366b9fed2423e24df10542ee0dc5 (diff) | |
download | linux-7beaa24ba49717419e24d1f6321e8b3c265a719c.tar.xz |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"Small release overall.
x86:
- miscellaneous fixes
- AVIC support (local APIC virtualization, AMD version)
s390:
- polling for interrupts after a VCPU goes to halted state is now
enabled for s390
- use hardware provided information about facility bits that do not
need any hypervisor activity, and other fixes for cpu models and
facilities
- improve perf output
- floating interrupt controller improvements.
MIPS:
- miscellaneous fixes
PPC:
- bugfixes only
ARM:
- 16K page size support
- generic firmware probing layer for timer and GIC
Christoffer Dall (KVM-ARM maintainer) says:
"There are a few changes in this pull request touching things
outside KVM, but they should all carry the necessary acks and it
made the merge process much easier to do it this way."
though actually the irqchip maintainers' acks didn't make it into the
patches. Marc Zyngier, who is both irqchip and KVM-ARM maintainer,
later acked at http://mid.gmane.org/573351D1.4060303@arm.com ('more
formally and for documentation purposes')"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (82 commits)
KVM: MTRR: remove MSR 0x2f8
KVM: x86: make hwapic_isr_update and hwapic_irr_update look the same
svm: Manage vcpu load/unload when enable AVIC
svm: Do not intercept CR8 when enable AVIC
svm: Do not expose x2APIC when enable AVIC
KVM: x86: Introducing kvm_x86_ops.apicv_post_state_restore
svm: Add VMEXIT handlers for AVIC
svm: Add interrupt injection via AVIC
KVM: x86: Detect and Initialize AVIC support
svm: Introduce new AVIC VMCB registers
KVM: split kvm_vcpu_wake_up from kvm_vcpu_kick
KVM: x86: Introducing kvm_x86_ops VCPU blocking/unblocking hooks
KVM: x86: Introducing kvm_x86_ops VM init/destroy hooks
KVM: x86: Rename kvm_apic_get_reg to kvm_lapic_get_reg
KVM: x86: Misc LAPIC changes to expose helper functions
KVM: shrink halt polling even more for invalid wakeups
KVM: s390: set halt polling to 80 microseconds
KVM: halt_polling: provide a way to qualify wakeups during poll
KVM: PPC: Book3S HV: Re-enable XICS fast path for irqfd-generated interrupts
kvm: Conditionally register IRQ bypass consumer
...
Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r-- | arch/x86/kvm/x86.c | 64 |
1 files changed, 36 insertions, 28 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 12f33e6..c805cf4 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -161,6 +161,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "halt_exits", VCPU_STAT(halt_exits) }, { "halt_successful_poll", VCPU_STAT(halt_successful_poll) }, { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) }, + { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) }, { "halt_wakeup", VCPU_STAT(halt_wakeup) }, { "hypercalls", VCPU_STAT(hypercalls) }, { "request_irq", VCPU_STAT(request_irq_exits) }, @@ -2002,22 +2003,8 @@ static void kvmclock_reset(struct kvm_vcpu *vcpu) vcpu->arch.pv_time_enabled = false; } -static void accumulate_steal_time(struct kvm_vcpu *vcpu) -{ - u64 delta; - - if (!(vcpu->arch.st.msr_val & KVM_MSR_ENABLED)) - return; - - delta = current->sched_info.run_delay - vcpu->arch.st.last_steal; - vcpu->arch.st.last_steal = current->sched_info.run_delay; - vcpu->arch.st.accum_steal = delta; -} - static void record_steal_time(struct kvm_vcpu *vcpu) { - accumulate_steal_time(vcpu); - if (!(vcpu->arch.st.msr_val & KVM_MSR_ENABLED)) return; @@ -2025,9 +2012,26 @@ static void record_steal_time(struct kvm_vcpu *vcpu) &vcpu->arch.st.steal, sizeof(struct kvm_steal_time)))) return; - vcpu->arch.st.steal.steal += vcpu->arch.st.accum_steal; - vcpu->arch.st.steal.version += 2; - vcpu->arch.st.accum_steal = 0; + if (vcpu->arch.st.steal.version & 1) + vcpu->arch.st.steal.version += 1; /* first time write, random junk */ + + vcpu->arch.st.steal.version += 1; + + kvm_write_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, + &vcpu->arch.st.steal, sizeof(struct kvm_steal_time)); + + smp_wmb(); + + vcpu->arch.st.steal.steal += current->sched_info.run_delay - + vcpu->arch.st.last_steal; + vcpu->arch.st.last_steal = current->sched_info.run_delay; + + kvm_write_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, + &vcpu->arch.st.steal, sizeof(struct kvm_steal_time)); + + smp_wmb(); + + vcpu->arch.st.steal.version += 1; kvm_write_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, &vcpu->arch.st.steal, sizeof(struct kvm_steal_time)); @@ -7752,6 +7756,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) kvm_page_track_init(kvm); kvm_mmu_init_vm(kvm); + if (kvm_x86_ops->vm_init) + return kvm_x86_ops->vm_init(kvm); + return 0; } @@ -7873,6 +7880,8 @@ void kvm_arch_destroy_vm(struct kvm *kvm) x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT, 0, 0); x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0); } + if (kvm_x86_ops->vm_destroy) + kvm_x86_ops->vm_destroy(kvm); kvm_iommu_unmap_guest(kvm); kfree(kvm->arch.vpic); kfree(kvm->arch.vioapic); @@ -8355,19 +8364,21 @@ bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) } EXPORT_SYMBOL_GPL(kvm_arch_has_noncoherent_dma); +bool kvm_arch_has_irq_bypass(void) +{ + return kvm_x86_ops->update_pi_irte != NULL; +} + int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons, struct irq_bypass_producer *prod) { struct kvm_kernel_irqfd *irqfd = container_of(cons, struct kvm_kernel_irqfd, consumer); - if (kvm_x86_ops->update_pi_irte) { - irqfd->producer = prod; - return kvm_x86_ops->update_pi_irte(irqfd->kvm, - prod->irq, irqfd->gsi, 1); - } + irqfd->producer = prod; - return -EINVAL; + return kvm_x86_ops->update_pi_irte(irqfd->kvm, + prod->irq, irqfd->gsi, 1); } void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons, @@ -8377,11 +8388,6 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons, struct kvm_kernel_irqfd *irqfd = container_of(cons, struct kvm_kernel_irqfd, consumer); - if (!kvm_x86_ops->update_pi_irte) { - WARN_ON(irqfd->producer != NULL); - return; - } - WARN_ON(irqfd->producer != prod); irqfd->producer = NULL; @@ -8429,3 +8435,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_write_tsc_offset); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ple_window); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pml_full); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pi_irte_update); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi); |