search for: irq_comm

This patchset implements the KVM part of the synthetic interrupt controller (SynIC) which is a building block of the Hyper-V paravirtualized device bus (vmbus). SynIC is a lapic extension, which is controlled via MSRs and maintains for each vCPU - 16 synthetic interrupt "lines" (SINT's); each can be configured to trigger a specific interrupt vector optionally with auto-EOI

This patchset implements the KVM part of the synthetic interrupt controller (SynIC) which is a building block of the Hyper-V paravirtualized device bus (vmbus). SynIC is a lapic extension, which is controlled via MSRs and maintains for each vCPU - 16 synthetic interrupt "lines" (SINT's); each can be configured to trigger a specific interrupt vector optionally with auto-EOI

...lt;pbonzini at redhat.com> --- arch/powerpc/kvm/mpic.c | 18 +++ arch/s390/kvm/interrupt.c | 18 +++ arch/x86/include/asm/kvm_host.h | 14 +++ arch/x86/kvm/hyperv.c | 266 ++++++++++++++++++++++++++++++++++++++++ arch/x86/kvm/hyperv.h | 20 +++ arch/x86/kvm/irq_comm.c | 16 +++ arch/x86/kvm/lapic.c | 15 ++- arch/x86/kvm/lapic.h | 5 + arch/x86/kvm/x86.c | 4 + drivers/hv/hyperv_vmbus.h | 5 - include/linux/kvm_host.h | 12 ++ include/uapi/linux/hyperv.h | 12 ++ include/uapi/linux/kvm.h...

This patchset implements the KVM part of the synthetic interrupt controller (synic) which is a building block of the Hyper-V paravirtualized device bus (vmbus). Synic is a lapic extension, which is controlled via MSRs and maintains for each vCPU - 16 synthetic interrupt "lines" (SINT's); each can be configured to trigger a specific interrupt vector optionally with auto-EOI

This patchset implements the KVM part of the synthetic interrupt controller (synic) which is a building block of the Hyper-V paravirtualized device bus (vmbus). Synic is a lapic extension, which is controlled via MSRs and maintains for each vCPU - 16 synthetic interrupt "lines" (SINT's); each can be configured to trigger a specific interrupt vector optionally with auto-EOI

...irt/kvm kvm-y += $(KVM)/kvm_main.o $(KVM)/coalesced_mmio.o \ $(KVM)/eventfd.o $(KVM)/irqchip.o $(KVM)/vfio.o kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o +kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \ diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c38cc5eb7e73..582b0187f5a4 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -455,6 +455,10 @@ struct kvm { struct srcu_struct srcu; struct srcu_struct irq_srcu; pid_t userspa...

...irqchip.o $(KVM)/vfio.o kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o -kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o $(KVM)/kvmi_msg.o +kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o $(KVM)/kvmi_msg.o kvmi.o kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \ diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c new file mode 100644 index 000000000000..9aecca551673 --- /dev/null +++ b/arch/x86/kvm/kvmi.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KVM introspection - x86 + * + * Copyright (C) 2019 Bitdefender...

...$(KVM)/eventfd.o $(KVM)/irqchip.o $(KVM)/vfio.o kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o -kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o +kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o $(KVM)/kvmi_msg.o kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 941f932373d0..0163e1ad1aaa 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -20,6 +20,8 @@ */ #include <linux/kvm_host.h> +#include <uapi/linux/kvmi.h> +#include <linux/kvmi.h> #in...

..._main.o $(KVM)/coalesced_mmio.o \ > $(KVM)/eventfd.o $(KVM)/irqchip.o $(KVM)/vfio.o > kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o > +kvm-$(CONFIG_KVM_INTROSPECTION) += $(KVM)/kvmi.o > > kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ > i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \ > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index c38cc5eb7e73..582b0187f5a4 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -455,6 +455,10 @@ struct kvm { > struct srcu_struct srcu; > struct sr...

...3 +- arch/x86/kernel/reboot.c | 3 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kernel/uprobes.c | 4 +- arch/x86/kvm/emulate.c | 2 +- arch/x86/kvm/hyperv.c | 2 +- arch/x86/kvm/irq_comm.c | 2 +- arch/x86/kvm/lapic.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 15 ++- arch/x86/kvm/x86.c...

...3 +- arch/x86/kernel/reboot.c | 3 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kernel/uprobes.c | 4 +- arch/x86/kvm/emulate.c | 2 +- arch/x86/kvm/hyperv.c | 2 +- arch/x86/kvm/irq_comm.c | 2 +- arch/x86/kvm/lapic.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 15 ++- arch/x86/kvm/x86.c...

...3 +- arch/x86/kernel/reboot.c | 3 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kernel/uprobes.c | 4 +- arch/x86/kvm/emulate.c | 2 +- arch/x86/kvm/hyperv.c | 2 +- arch/x86/kvm/irq_comm.c | 2 +- arch/x86/kvm/lapic.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 15 ++- arch/x86/kvm/x86.c...

...3 +- arch/x86/kernel/reboot.c | 3 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kernel/uprobes.c | 4 +- arch/x86/kvm/emulate.c | 2 +- arch/x86/kvm/hyperv.c | 2 +- arch/x86/kvm/irq_comm.c | 2 +- arch/x86/kvm/lapic.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 15 ++- arch/x86/kvm/x86.c...

...3 +- arch/x86/kernel/reboot.c | 3 +- arch/x86/kernel/signal.c | 2 +- arch/x86/kernel/uprobes.c | 4 +- arch/x86/kvm/emulate.c | 2 +- arch/x86/kvm/hyperv.c | 2 +- arch/x86/kvm/irq_comm.c | 2 +- arch/x86/kvm/lapic.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 15 ++- arch/x86/kvm/x86.c...

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

This patch series is based on the VM introspection patches (https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/), extending the introspection API with EPT Views and Virtualization Exceptions (#VE) support. The purpose of this series is to get an initial feedback and to see if we are on the right track, especially because the changes made to add the EPT views are not small

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place