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kvm/ppc/mpic: add KVM_CAP_IRQ_MPIC

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Enabling this capability connects the vcpu to the designated in-kernel
MPIC.  Using explicit connections between vcpus and irqchips allows
for flexibility, but the main benefit at the moment is that it
simplifies the code -- KVM doesn't need vm-global state to remember
which MPIC object is associated with this vm, and it doesn't need to
care about ordering between irqchip creation and vcpu creation.

Signed-off-by: Scott Wood <[email protected]>
[agraf: add stub functions for kvmppc_mpic_{dis,}connect_vcpu]
Signed-off-by: Alexander Graf <[email protected]>
This commit is contained in:
Scott Wood 2013-04-12 14:08:47 +00:00 • committed by Alexander Graf
commit eb1e4f43e0
7 changed files with 141 additions and 8 deletions
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8
Documentation/virtual/kvm/api.txt
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@ -2744,3 +2744,11 @@ to receive the topmost interrupt vector.
When disabled (args[0] == 0), behavior is as if this facility is unsupported.
When this capability is enabled, KVM_EXIT_EPR can occur.
6.6 KVM_CAP_IRQ_MPIC
Architectures: ppc
Parameters: args[0] is the MPIC device fd
args[1] is the MPIC CPU number for this vcpu
This capability connects the vcpu to an in-kernel MPIC device.