Commit a76ccff6 authored by Thomas Huth's avatar Thomas Huth Committed by Paolo Bonzini
Browse files

KVM: s390: Push run loop into __vcpu_run 



Moved the do-while loop from kvm_arch_vcpu_ioctl_run into __vcpu_run
and the calling of kvm_handle_sie_intercept() into vcpu_post_run()
(so we can add the srcu locks in a proper way in the next patch).

Signed-off-by: default avatarThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 3fb4c40f

arch/s390/kvm/kvm-s390.c

+25 −24
Original line number Diff line number Diff line
@@ -738,6 +738,13 @@ static int vcpu_post_run(struct kvm_vcpu *vcpu, int exit_reason) 


	memcpy(&vcpu->run->s.regs.gprs[14], &vcpu->arch.sie_block->gg14, 16);



	if (rc == 0) {

		if (kvm_is_ucontrol(vcpu->kvm))

			rc = -EOPNOTSUPP;

		else

			rc = kvm_handle_sie_intercept(vcpu);

	}



	return rc;

}
@@ -745,21 +752,24 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) 
{

	int rc, exit_reason;



	do {

		rc = vcpu_pre_run(vcpu);

		if (rc)

		return rc;

			break;



		/*

	 * As PF_VCPU will be used in fault handler, between guest_enter

	 * and guest_exit should be no uaccess.

		 * As PF_VCPU will be used in fault handler, between

		 * guest_enter and guest_exit should be no uaccess.

		 */

		preempt_disable();

		kvm_guest_enter();

		preempt_enable();

	exit_reason = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs);

		exit_reason = sie64a(vcpu->arch.sie_block,

				     vcpu->run->s.regs.gprs);

		kvm_guest_exit();



		rc = vcpu_post_run(vcpu, exit_reason);

	} while (!signal_pending(current) && !rc);



	return rc;

}
@@ -801,16 +811,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) 
	}



	might_fault();



	do {

	rc = __vcpu_run(vcpu);

		if (rc)

			break;

		if (kvm_is_ucontrol(vcpu->kvm))

			rc = -EOPNOTSUPP;

		else

			rc = kvm_handle_sie_intercept(vcpu);

	} while (!signal_pending(current) && !rc);



	if (signal_pending(current) && !rc) {

		kvm_run->exit_reason = KVM_EXIT_INTR;

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