Christian Borntraeger 8f2abe6a1e
KVM: s390: sie intercept handling ...
This path introduces handling of sie intercepts in three flavors: Intercepts
are either handled completely in-kernel by kvm_handle_sie_intercept(),
or passed to userspace with corresponding data in struct kvm_run in case
kvm_handle_sie_intercept() returns -ENOTSUPP.
In case of partial execution in kernel with the need of userspace support,
kvm_handle_sie_intercept() may choose to set up struct kvm_run and return
-EREMOTE.
The trivial intercept reasons are handled in this patch:
handle_noop() just does nothing for intercepts that don't require our support
at all
handle_stop() is called when a cpu enters stopped state, and it drops out to
userland after updating our vcpu state
handle_validity() faults in the cpu lowcore if needed, or passes the request
to userland
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com >
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com >
Signed-off-by: Carsten Otte <cotte@de.ibm.com >
Signed-off-by: Avi Kivity <avi@qumranet.com >
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8f2abe6a1e