diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2008-03-25 18:47:23 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 11:00:43 +0200 |
| commit | 8f2abe6a1e525e878bdf58f68ccd146d543fde84 (patch) | |
| tree | 5f52959474a16847c740fb8668ebd9d6cbc75d07 /include | |
| parent | KVM: s390: arch backend for the kvm kernel module (diff) | |
| download | linux-8f2abe6a1e525e878bdf58f68ccd146d543fde84.tar.xz linux-8f2abe6a1e525e878bdf58f68ccd146d543fde84.zip | |
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')
| -rw-r--r-- | include/asm-s390/kvm_host.h | 4 | ||||
| -rw-r--r-- | include/linux/kvm.h | 9 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-s390/kvm_host.h b/include/asm-s390/kvm_host.h index c9d653333106..8965b38d0a32 100644 --- a/include/asm-s390/kvm_host.h +++ b/include/asm-s390/kvm_host.h @@ -101,6 +101,10 @@ struct sie_block { struct kvm_vcpu_stat { u32 exit_userspace; + u32 exit_external_request; + u32 exit_external_interrupt; + u32 exit_stop_request; + u32 exit_validity; }; struct kvm_vcpu_arch { diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 2367ff0c5dd0..f2acd6b9ab4d 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]; }; |