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Commit 1a03b764 authored by Jens Freimann's avatar Jens Freimann Committed by Christian Borntraeger
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KVM: s390: convert local irqs in __do_deliver_interrupt() 



Convert local irqs in __do_deliver_interrupt() to new guest
access functions.

Signed-off-by: default avatarJens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 7988276d

arch/s390/kvm/interrupt.c

+43 −38
Original line number Diff line number Diff line
@@ -186,26 +186,28 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, 
		vcpu->stat.deliver_emergency_signal++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,

						 inti->emerg.code, 0);

		rc  = put_guest(vcpu, 0x1201, (u16 __user *)__LC_EXT_INT_CODE);

		rc |= put_guest(vcpu, inti->emerg.code,

				(u16 __user *)__LC_EXT_CPU_ADDR);

		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,

		rc  = put_guest_lc(vcpu, 0x1201, (u16 *)__LC_EXT_INT_CODE);

		rc |= put_guest_lc(vcpu, inti->emerg.code,

				   (u16 *)__LC_EXT_CPU_ADDR);

		rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,

				     &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,

				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

				      __LC_EXT_NEW_PSW, sizeof(psw_t));

		break;

	case KVM_S390_INT_EXTERNAL_CALL:

		VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp ext call");

		vcpu->stat.deliver_external_call++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,

						 inti->extcall.code, 0);

		rc  = put_guest(vcpu, 0x1202, (u16 __user *)__LC_EXT_INT_CODE);

		rc |= put_guest(vcpu, inti->extcall.code,

				(u16 __user *)__LC_EXT_CPU_ADDR);

		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,

				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

				      __LC_EXT_NEW_PSW, sizeof(psw_t));

		rc  = put_guest_lc(vcpu, 0x1202, (u16 *)__LC_EXT_INT_CODE);

		rc |= put_guest_lc(vcpu, inti->extcall.code,

				   (u16 *)__LC_EXT_CPU_ADDR);

		rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,

				     &vcpu->arch.sie_block->gpsw,

				     sizeof(psw_t));

		rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,

				    &vcpu->arch.sie_block->gpsw,

				    sizeof(psw_t));

		break;

	case KVM_S390_INT_SERVICE:

		VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x",
@@ -225,14 +227,14 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, 
	case KVM_S390_INT_PFAULT_INIT:

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type, 0,

						 inti->ext.ext_params2);

		rc  = put_guest(vcpu, 0x2603, (u16 __user *) __LC_EXT_INT_CODE);

		rc |= put_guest(vcpu, 0x0600, (u16 __user *) __LC_EXT_CPU_ADDR);

		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,

		rc  = put_guest_lc(vcpu, 0x2603, (u16 *) __LC_EXT_INT_CODE);

		rc |= put_guest_lc(vcpu, 0x0600, (u16 *) __LC_EXT_CPU_ADDR);

		rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,

				     &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

				      __LC_EXT_NEW_PSW, sizeof(psw_t));

		rc |= put_guest(vcpu, inti->ext.ext_params2,

				(u64 __user *) __LC_EXT_PARAMS2);

		rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,

				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= put_guest_lc(vcpu, inti->ext.ext_params2,

				   (u64 *) __LC_EXT_PARAMS2);

		break;

	case KVM_S390_INT_PFAULT_DONE:

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type, 0,
@@ -288,11 +290,11 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, 
		vcpu->stat.deliver_restart_signal++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,

						 0, 0);

		rc  = copy_to_guest(vcpu,

		rc  = write_guest_lc(vcpu,

				     offsetof(struct _lowcore, restart_old_psw),

				     &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

				      offsetof(struct _lowcore, restart_psw),

		rc |= read_guest_lc(vcpu, offsetof(struct _lowcore, restart_psw),

				    &vcpu->arch.sie_block->gpsw,

				    sizeof(psw_t));

		atomic_clear_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags);

		break;
@@ -303,13 +305,15 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, 
		vcpu->stat.deliver_program_int++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,

						 inti->pgm.code, 0);

		rc  = put_guest(vcpu, inti->pgm.code, (u16 __user *)__LC_PGM_INT_CODE);

		rc |= put_guest(vcpu, table[vcpu->arch.sie_block->ipa >> 14],

		rc  = put_guest_lc(vcpu, inti->pgm.code,

				   (u16 __user *)__LC_PGM_INT_CODE);

		rc |= put_guest_lc(vcpu, table[vcpu->arch.sie_block->ipa >> 14],

				   (u16 __user *)__LC_PGM_ILC);

		rc |= copy_to_guest(vcpu, __LC_PGM_OLD_PSW,

		rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW,

				     &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

				      __LC_PGM_NEW_PSW, sizeof(psw_t));

		rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW,

				    &vcpu->arch.sie_block->gpsw,

				    sizeof(psw_t));

		break;



	case KVM_S390_MCHK:
@@ -372,11 +376,12 @@ static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu) 
		return 0;

	if (!(vcpu->arch.sie_block->gcr[0] & 0x800ul))

		return 0;

	rc  = put_guest(vcpu, 0x1004, (u16 __user *)__LC_EXT_INT_CODE);

	rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,

	rc  = put_guest_lc(vcpu, 0x1004, (u16 __user *)__LC_EXT_INT_CODE);

	rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,

			     &vcpu->arch.sie_block->gpsw, sizeof(psw_t));

	rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,

			      __LC_EXT_NEW_PSW, sizeof(psw_t));

	rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,

			    &vcpu->arch.sie_block->gpsw,

			    sizeof(psw_t));

	if (rc) {

		printk("kvm: The guest lowcore is not mapped during interrupt "

			"delivery, killing userspace\n");