diff options
| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2015-09-30 13:48:45 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2015-10-21 12:21:30 +0200 |
| commit | 4ab729207fe1464b19c6bec609cd545ab717174a (patch) | |
| tree | f2345f04f0128f83a18c50438fd74a847b438acd /target-s390x/cpu.h | |
| parent | db3b2566e0fb45e2901b6f9b842d91db6963915d (diff) | |
s390x: reset crypto only on clear reset and QEMU reset
Initializing VM crypto in initial cpu reset has multiple problems
1. We call the exact same function #VCPU times, although one time is enough
2. On SIGP initial cpu reset, we exchange the wrapping key while
other VCPUs are running. Bad!
3. It is simply wrong. According to the Pop, a reset happens only during a
clear reset.
So, we have to reset the keys
- on modified clear reset
- on load clear (QEMU reset - via machine reset)
- on qemu start (via machine reset)
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'target-s390x/cpu.h')
| -rw-r--r-- | target-s390x/cpu.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 07ae16c8c5..ca98e5a547 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -1166,6 +1166,7 @@ void kvm_s390_reset_vcpu(S390CPU *cpu); int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit); void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu); int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu); +void kvm_s390_crypto_reset(void); #else static inline void kvm_s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr, @@ -1215,6 +1216,9 @@ static inline int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu) { return 0; } +static inline void kvm_s390_crypto_reset(void) +{ +} #endif static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit) @@ -1261,6 +1265,13 @@ static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier, return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign); } +static inline void s390_crypto_reset(void) +{ + if (kvm_enabled()) { + kvm_s390_crypto_reset(); + } +} + #ifdef CONFIG_KVM static inline bool vregs_needed(void *opaque) { |