search for: kvm_for_each_vcpu

...h guest and host. Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Raghavendra K T (4): kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration kvm hypervisor: Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock --- Documentation/virtual/kvm/cpuid.txt | 4 ++++ Documentation/virtual/kvm/hypercalls.txt | 14 ++++++++++++++ arch/x86/include/asm/kvm_host.h | 5 +++++ arch/x8...

...h guest and host. Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Raghavendra K T (4): kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration kvm hypervisor: Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock --- Documentation/virtual/kvm/cpuid.txt | 4 ++++ Documentation/virtual/kvm/hypercalls.txt | 14 ++++++++++++++ arch/x86/include/asm/kvm_host.h | 5 +++++ arch/x8...

...te that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup) Raghavendra K T (3): kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi kvm hypervisor: Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Documentation/virtual/kvm/cpuid.txt | 4 ++++ Documentati...

...te that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup) Raghavendra K T (3): kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi kvm hypervisor: Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Srivatsa Vaddagiri (1): kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Documentation/virtual/kvm/cpuid.txt | 4 ++++ Documentati...

> On Oct 4, 2018, at 12:31 PM, Peter Zijlstra <peterz at infradead.org> wrote: > > On Thu, Oct 04, 2018 at 07:00:45AM -0700, Andy Lutomirski wrote: >>> On Oct 4, 2018, at 1:11 AM, Peter Zijlstra <peterz at infradead.org> wrote: >>> >>>> On Thu, Oct 04, 2018 at 09:54:45AM +0200, Vitaly Kuznetsov wrote: >>>> I was hoping to hear this

> On Oct 4, 2018, at 12:31 PM, Peter Zijlstra <peterz at infradead.org> wrote: > > On Thu, Oct 04, 2018 at 07:00:45AM -0700, Andy Lutomirski wrote: >>> On Oct 4, 2018, at 1:11 AM, Peter Zijlstra <peterz at infradead.org> wrote: >>> >>>> On Thu, Oct 04, 2018 at 09:54:45AM +0200, Vitaly Kuznetsov wrote: >>>> I was hoping to hear this

...siginfo[1] = {}; + int err = -ESRCH; + struct pid *pid; + + rcu_read_lock(); + pid = rcu_dereference(vcpu->pid); + if (pid) + err = kill_pid_info(sig, siginfo, pid); + rcu_read_unlock(); + + return err; +} + +static void kvmi_vm_shutdown(struct kvm *kvm) +{ + struct kvm_vcpu *vcpu; + int i; + + kvm_for_each_vcpu(i, vcpu, kvm) + kvmi_vcpu_kill(SIGTERM, vcpu); +} + void kvmi_handle_common_event_actions(struct kvm *kvm, u32 action) { switch (action) { + case KVMI_EVENT_ACTION_CRASH: + kvmi_vm_shutdown(kvm); + break; + default: kvmi_handle_unsupported_event_action(kvm); }

...not against kvm.git queue though, so I had to fix one minor conflict manually. > Changes since V12: > fold the patch 3 into patch 2 for bisection. (Eric Northup) > > Raghavendra K T (3): > kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi > kvm hypervisor: Simplify kvm_for_each_vcpu with > kvm_irq_delivery_to_apic > Documentation/kvm : Add documentation on Hypercalls and features used > for PV spinlock > > Srivatsa Vaddagiri (1): > kvm hypervisor : Add a hypercall to KVM hypervisor to support > pv-ticketlocks > > Documentation/virt...

...em_cache_free(radix_cache, m); + } + + spin_unlock(&kvm->mmu_lock); + srcu_read_unlock(&kvm->srcu, idx); +} + static void free_kvmi(struct kvm *kvm) { bool restore_interception = KVMI(kvm)->cleanup_on_unhook; struct kvm_vcpu *vcpu; int i; + kvmi_clear_mem_access(kvm); + kvm_for_each_vcpu(i, vcpu, kvm) free_vcpui(vcpu, restore_interception); @@ -297,6 +333,10 @@ alloc_kvmi(struct kvm *kvm, const struct kvm_introspection_hook *hook) atomic_set(&kvmi->ev_seq, 0); + INIT_RADIX_TREE(&kvmi->access_tree, + GFP_KERNEL & ~__GFP_DIRECT_RECLAIM); + rwlock_init(&...

...*vcpu) { free_vcpui(vcpu); + kvmi_arch_vcpu_free(vcpu); } static struct kvm_introspection * @@ -324,6 +326,21 @@ static int kvmi_recv_thread(void *arg) return 0; } +static bool ready_to_hook(struct kvm *kvm) +{ + struct kvm_vcpu *vcpu; + int i; + + if (kvm->kvmi) + return false; + + kvm_for_each_vcpu(i, vcpu, kvm) + if (kvmi_arch_vcpu_introspected(vcpu)) + return false; + + return true; +} + int kvmi_hook(struct kvm *kvm, const struct kvm_introspection_hook *hook) { struct kvm_introspection *kvmi; @@ -331,7 +348,7 @@ int kvmi_hook(struct kvm *kvm, const struct kvm_introspection_hook *hoo...

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

The 6-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. one MSR is added to aid live migration. Changes

The 6-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. one MSR is added to aid live migration. Changes

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Note: 1) patch is based on 3.4-rc3 + ticketlock

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Note: 1) patch is based on 3.4-rc3 + ticketlock

...siginfo[1] = {}; + int err = -ESRCH; + struct pid *pid; + + rcu_read_lock(); + pid = rcu_dereference(vcpu->pid); + if (pid) + err = kill_pid_info(sig, siginfo, pid); + rcu_read_unlock(); + + return err; +} + +static void kvmi_vm_shutdown(struct kvm *kvm) +{ + struct kvm_vcpu *vcpu; + int i; + + kvm_for_each_vcpu(i, vcpu, kvm) + kvmi_vcpu_kill(SIGTERM, vcpu); +} + +void kvmi_handle_common_event_actions(struct kvm *kvm, + u32 action, const char *str) +{ + switch (action) { + case KVMI_EVENT_ACTION_CRASH: + kvmi_vm_shutdown(kvm); + break; + + default: + kvmi_err(KVMI(kvm), "Unsupported actio...

...enable debug information for KVM Guests kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T (5): x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Add directed yield in vcpu block path --- Link in V8 has links to previous patch series and also whole history. [1]. V9 PV Ticketspinlock for Xen/KVM link: https://lkml.org/lkml/...

...enable debug information for KVM Guests kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T (5): x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Add directed yield in vcpu block path --- Link in V8 has links to previous patch series and also whole history. [1]. V9 PV Ticketspinlock for Xen/KVM link: https://lkml.org/lkml/...

...enable debug information for KVM Guests kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T (5): x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Add directed yield in vcpu block path --- Link in V8 has links to previous patch series and also whole history. [1]. V9 PV Ticketspinlock for Xen/KVM link: https://lkml.org/lkml/...