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| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-09-10 19:09:14 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-09-10 19:09:14 +0200 |
| commit | 32d1d15c52c17a7f0368e6a7084796e16ec481d3 (patch) | |
| tree | 1ef7e045c610279617003d750501224190f12a30 /Documentation/virt | |
| parent | 8146856b0a2693d5f7334f720c9b39a987f7571d (diff) | |
| parent | 92f35b751c71d14250a401246f2c792e3aa5b386 (diff) | |
Merge tag 'kvmarm-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm updates for 5.4
- New ITS translation cache
- Allow up to 512 CPUs to be supported with GICv3 (for real this time)
- Now call kvm_arch_vcpu_blocking early in the blocking sequence
- Tidy-up device mappings in S2 when DIC is available
- Clean icache invalidation on VMID rollover
- General cleanup
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.txt | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/virt/kvm/api.txt b/Documentation/virt/kvm/api.txt index 2d067767b617..25931ca1cb38 100644 --- a/Documentation/virt/kvm/api.txt +++ b/Documentation/virt/kvm/api.txt @@ -753,8 +753,8 @@ in-kernel irqchip (GIC), and for in-kernel irqchip can tell the GIC to use PPIs designated for specific cpus. The irq field is interpreted like this: - bits: | 31 ... 24 | 23 ... 16 | 15 ... 0 | - field: | irq_type | vcpu_index | irq_id | + bits: | 31 ... 28 | 27 ... 24 | 23 ... 16 | 15 ... 0 | + field: | vcpu2_index | irq_type | vcpu_index | irq_id | The irq_type field has the following values: - irq_type[0]: out-of-kernel GIC: irq_id 0 is IRQ, irq_id 1 is FIQ @@ -766,6 +766,14 @@ The irq_type field has the following values: In both cases, level is used to assert/deassert the line. +When KVM_CAP_ARM_IRQ_LINE_LAYOUT_2 is supported, the target vcpu is +identified as (256 * vcpu2_index + vcpu_index). Otherwise, vcpu2_index +must be zero. + +Note that on arm/arm64, the KVM_CAP_IRQCHIP capability only conditions +injection of interrupts for the in-kernel irqchip. KVM_IRQ_LINE can always +be used for a userspace interrupt controller. + struct kvm_irq_level { union { __u32 irq; /* GSI */ |