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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-05-24 12:40:11 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-01-30 11:19:17 +0100 |
| commit | a69cbe81b2f38437113c05019a134a4731a3aa78 (patch) | |
| tree | c73438a4bb6fe4518f3a03c44fe84cb7a5befbb9 /arch/s390/kvm/kvm-s390.h | |
| parent | 3fa8cad7402cfe982a60d746609e89aafe15d131 (diff) | |
| download | linux-stable-a69cbe81b2f38437113c05019a134a4731a3aa78.tar.gz linux-stable-a69cbe81b2f38437113c05019a134a4731a3aa78.tar.bz2 linux-stable-a69cbe81b2f38437113c05019a134a4731a3aa78.zip | |
KVM: s390: guestdbg: filter PER i-fetch on EXECUTE properly
When we get a PER i-fetch event on an EXECUTE or EXECUTE RELATIVE LONG
instruction, because the executed instruction generated a PER i-fetch
event, then the PER address points at the EXECUTE function, not the
fetched one.
Therefore, when filtering PER events, we have to take care of the
really fetched instruction, which we can only get by reading in guest
virtual memory.
For icpt code 4 and 56, we directly have additional information about an
EXECUTE instruction at hand. For icpt code 8, we always have to read
in guest virtual memory.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[small fixes]
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 22a0a7ceffad..af9fa91a0c91 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -377,7 +377,7 @@ int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu); -void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); +int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); /* support for Basic/Extended SCA handling */ static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) |