diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2008-03-25 18:47:34 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 12:00:46 +0300 |
| commit | e28acfea5dd9dbc67c2594cbefc140129dbd0e3f (patch) | |
| tree | 2f66c3afcf18fd938bae1460f1c5d35ccbf75550 /arch/s390/kvm/kvm-s390.h | |
| parent | 5288fbf0ef041ba0e8b4dcb2df4536b5e3a48b32 (diff) | |
KVM: s390: intercepts for diagnose instructions
This patch introduces interpretation of some diagnose instruction intercepts.
Diagnose is our classic architected way of doing a hypercall. This patch
features the following diagnose codes:
- vm storage size, that tells the guest about its memory layout
- time slice end, which is used by the guest to indicate that it waits
for a lock and thus cannot use up its time slice in a useful way
- ipl functions, which a guest can use to reset and reboot itself
In order to implement ipl functions, we also introduce an exit reason that
causes userspace to perform various resets on the virtual machine. All resets
are described in the principles of operation book, except KVM_S390_RESET_IPL
which causes a reboot of the machine.
Acked-by: Martin Schwidefsky <martin.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.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index e6e5756a0e0..3893cf12eac 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -58,4 +58,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); /* implemented in kvm-s390.c */ int __kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); +/* implemented in diag.c */ +int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); + #endif |