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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 /arch/s390/kvm/kvm-s390.h
parentb0c632db637d68ad39d9f97f452ce176253f5f4e (diff)
downloadop-kernel-dev-8f2abe6a1e525e878bdf58f68ccd146d543fde84.zip
op-kernel-dev-8f2abe6a1e525e878bdf58f68ccd146d543fde84.tar.gz
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 'arch/s390/kvm/kvm-s390.h')
-rw-r--r--arch/s390/kvm/kvm-s390.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index ed64a22..5b82527 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -13,6 +13,13 @@
#ifndef ARCH_S390_KVM_S390_H
#define ARCH_S390_KVM_S390_H
+
+#include <linux/kvm_host.h>
+
+typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
+
+int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
+
#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
do { \
debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
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