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authorChristian Borntraeger <borntraeger@de.ibm.com>2008-03-25 18:47:23 +0100
committerAvi Kivity <avi@qumranet.com>2008-04-27 12:00:43 +0300
commit8f2abe6a1e525e878bdf58f68ccd146d543fde84 (patch)
tree5f52959474a16847c740fb8668ebd9d6cbc75d07 /include/linux
parentb0c632db637d68ad39d9f97f452ce176253f5f4e (diff)
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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/kvm.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 2367ff0c5dd..f2acd6b9ab4 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -74,6 +74,7 @@ struct kvm_irqchip {
#define KVM_EXIT_INTR 10
#define KVM_EXIT_SET_TPR 11
#define KVM_EXIT_TPR_ACCESS 12
+#define KVM_EXIT_S390_SIEIC 13
/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
struct kvm_run {
@@ -138,6 +139,14 @@ struct kvm_run {
__u32 is_write;
__u32 pad;
} tpr_access;
+ /* KVM_EXIT_S390_SIEIC */
+ struct {
+ __u8 icptcode;
+ __u64 mask; /* psw upper half */
+ __u64 addr; /* psw lower half */
+ __u16 ipa;
+ __u32 ipb;
+ } s390_sieic;
/* Fix the size of the union. */
char padding[256];
};