Commit 8c3f61e2 authored by Cornelia Huck's avatar Cornelia Huck Committed by Marcelo Tosatti
Browse files

KVM: s390: Handle sckpf instruction 



Handle the mandatory intercept SET CLOCK PROGRAMMABLE FIELD
instruction.

Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 8733ac36

arch/s390/kvm/intercept.c

+1 −0
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ static int handle_lctl(struct kvm_vcpu *vcpu) 
}



static intercept_handler_t instruction_handlers[256] = {

	[0x01] = kvm_s390_handle_01,

	[0x83] = kvm_s390_handle_diag,

	[0xae] = kvm_s390_handle_sigp,

	[0xb2] = kvm_s390_handle_b2,

arch/s390/kvm/kvm-s390.h

+1 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); 
/* implemented in priv.c */

int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);

int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);

int kvm_s390_handle_01(struct kvm_vcpu *vcpu);



/* implemented in sigp.c */

int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);

arch/s390/kvm/priv.c

+31 −0
Original line number Diff line number Diff line
@@ -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;

}