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| author | Radim Krčmář <rkrcmar@redhat.com> | 2016-07-22 21:27:26 +0300 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2016-07-22 21:27:26 +0300 |
| commit | 912902ce78b0d48f717f9128e61fb9bffbd65f86 (patch) | |
| tree | 5a97dd19149ba1e0386df9bb467f8c5fb7ba2393 /Documentation/virtual/kvm/api.txt | |
| parent | 61f5dea179653558562ba9a5dd71eb29d91a383e (diff) | |
| parent | 3a88bded203591d4683aacdbb65cd0f549bc58cb (diff) | |
| download | linux-912902ce78b0d48f717f9128e61fb9bffbd65f86.tar.xz | |
Merge tag 'kvm-arm-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into next
KVM/ARM changes for Linux 4.8
- GICv3 ITS emulation
- Simpler idmap management that fixes potential TLB conflicts
- Honor the kernel protection in HYP mode
- Removal of the old vgic implementation
Diffstat (limited to 'Documentation/virtual/kvm/api.txt')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 299306db5d84..5237e1b2fd66 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -2182,7 +2182,7 @@ after pausing the vcpu, but before it is resumed. 4.71 KVM_SIGNAL_MSI Capability: KVM_CAP_SIGNAL_MSI -Architectures: x86 +Architectures: x86 arm64 Type: vm ioctl Parameters: struct kvm_msi (in) Returns: >0 on delivery, 0 if guest blocked the MSI, and -1 on error @@ -2195,10 +2195,18 @@ struct kvm_msi { __u32 address_hi; __u32 data; __u32 flags; - __u8 pad[16]; + __u32 devid; + __u8 pad[12]; }; -No flags are defined so far. The corresponding field must be 0. +flags: KVM_MSI_VALID_DEVID: devid contains a valid value +devid: If KVM_MSI_VALID_DEVID is set, contains a unique device identifier + for the device that wrote the MSI message. + For PCI, this is usually a BFD identifier in the lower 16 bits. + +The per-VM KVM_CAP_MSI_DEVID capability advertises the need to provide +the device ID. If this capability is not set, userland cannot rely on +the kernel to allow the KVM_MSI_VALID_DEVID flag being set. On x86, address_hi is ignored unless the KVM_CAP_X2APIC_API capability is enabled. If it is enabled, address_hi bits 31-8 provide bits 31-8 of the |