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Diffstat (limited to 'Documentation/virt/kvm/devices/vcpu.rst')
| -rw-r--r-- | Documentation/virt/kvm/devices/vcpu.rst | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/Documentation/virt/kvm/devices/vcpu.rst b/Documentation/virt/kvm/devices/vcpu.rst index 31f14ec4a65b..60bf205cb373 100644 --- a/Documentation/virt/kvm/devices/vcpu.rst +++ b/Documentation/virt/kvm/devices/vcpu.rst @@ -137,13 +137,37 @@ exit_reason = KVM_EXIT_FAIL_ENTRY and populate the fail_entry struct by setting hardare_entry_failure_reason field to KVM_EXIT_FAIL_ENTRY_CPU_UNSUPPORTED and the cpu field to the processor id. +1.5 ATTRIBUTE: KVM_ARM_VCPU_PMU_V3_SET_NR_COUNTERS +-------------------------------------------------- + +:Parameters: in kvm_device_attr.addr the address to an unsigned int + representing the maximum value taken by PMCR_EL0.N + +:Returns: + + ======= ==================================================== + -EBUSY PMUv3 already initialized, a VCPU has already run or + an event filter has already been set + -EFAULT Error accessing the value pointed to by addr + -ENODEV PMUv3 not supported or GIC not initialized + -EINVAL No PMUv3 explicitly selected, or value of N out of + range + ======= ==================================================== + +Set the number of implemented event counters in the virtual PMU. This +mandates that a PMU has explicitly been selected via +KVM_ARM_VCPU_PMU_V3_SET_PMU, and will fail when no PMU has been +explicitly selected, or the number of counters is out of range for the +selected PMU. Selecting a new PMU cancels the effect of setting this +attribute. + 2. GROUP: KVM_ARM_VCPU_TIMER_CTRL ================================= :Architectures: ARM64 -2.1. ATTRIBUTES: KVM_ARM_VCPU_TIMER_IRQ_VTIMER, KVM_ARM_VCPU_TIMER_IRQ_PTIMER ------------------------------------------------------------------------------ +2.1. ATTRIBUTES: KVM_ARM_VCPU_TIMER_IRQ_{VTIMER,PTIMER,HVTIMER,HPTIMER} +----------------------------------------------------------------------- :Parameters: in kvm_device_attr.addr the address for the timer interrupt is a pointer to an int @@ -159,10 +183,12 @@ A value describing the architected timer interrupt number when connected to an in-kernel virtual GIC. These must be a PPI (16 <= intid < 32). Setting the attribute overrides the default values (see below). -============================= ========================================== -KVM_ARM_VCPU_TIMER_IRQ_VTIMER The EL1 virtual timer intid (default: 27) -KVM_ARM_VCPU_TIMER_IRQ_PTIMER The EL1 physical timer intid (default: 30) -============================= ========================================== +============================== ========================================== +KVM_ARM_VCPU_TIMER_IRQ_VTIMER The EL1 virtual timer intid (default: 27) +KVM_ARM_VCPU_TIMER_IRQ_PTIMER The EL1 physical timer intid (default: 30) +KVM_ARM_VCPU_TIMER_IRQ_HVTIMER The EL2 virtual timer intid (default: 28) +KVM_ARM_VCPU_TIMER_IRQ_HPTIMER The EL2 physical timer intid (default: 26) +============================== ========================================== Setting the same PPI for different timers will prevent the VCPUs from running. Setting the interrupt number on a VCPU configures all VCPUs created at that |