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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2012-04-24 09:24:44 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-04-30 21:55:52 -0300 |
| commit | 8c3f61e2ddb6c1845704fd8ef1b999ecd2e4725c (patch) | |
| tree | 0a2c2375f75ae52b879afe1cbfb770ef5ce53394 /arch/s390/kvm/priv.c | |
| parent | 8733ac36fc37fe055a7d7daadf5451b4231f0214 (diff) | |
| download | lwn-8c3f61e2ddb6c1845704fd8ef1b999ecd2e4725c.tar.gz lwn-8c3f61e2ddb6c1845704fd8ef1b999ecd2e4725c.zip | |
KVM: s390: Handle sckpf instruction
Handle the mandatory intercept SET CLOCK PROGRAMMABLE FIELD
instruction.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390/kvm/priv.c')
| -rw-r--r-- | arch/s390/kvm/priv.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index e5a45dbd26ac..68a6b2ed16bf 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -380,3 +380,34 @@ int kvm_s390_handle_e5(struct kvm_vcpu *vcpu) return -EOPNOTSUPP; } +static int handle_sckpf(struct kvm_vcpu *vcpu) +{ + u32 value; + + if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) + return kvm_s390_inject_program_int(vcpu, + PGM_PRIVILEGED_OPERATION); + + if (vcpu->run->s.regs.gprs[0] & 0x00000000ffff0000) + return kvm_s390_inject_program_int(vcpu, + PGM_SPECIFICATION); + + value = vcpu->run->s.regs.gprs[0] & 0x000000000000ffff; + vcpu->arch.sie_block->todpr = value; + + return 0; +} + +static intercept_handler_t x01_handlers[256] = { + [0x07] = handle_sckpf, +}; + +int kvm_s390_handle_01(struct kvm_vcpu *vcpu) +{ + intercept_handler_t handler; + + handler = x01_handlers[vcpu->arch.sie_block->ipa & 0x00ff]; + if (handler) + return handler(vcpu); + return -EOPNOTSUPP; +} |