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Commit 9daecfc6 authored by David Hildenbrand's avatar David Hildenbrand Committed by Christian Borntraeger
Browse files

KVM: s390: introduce and use kvm_s390_clear_cpuflags() 



Use it just like kvm_s390_set_cpuflags().

Suggested-by: default avatarCornelia Huck <cohuck@redhat.com>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Message-Id: <20180123170531.13687-4-david@redhat.com>
Reviewed-by: default avatarThomas Huth <thuth@redhat.com>
Reviewed-by: default avatarCornelia Huck <cohuck@redhat.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent ef8f4f49

arch/s390/kvm/interrupt.c

+4 −4
Original line number Diff line number Diff line
@@ -111,7 +111,7 @@ static void sca_clear_ext_call(struct kvm_vcpu *vcpu) 


	if (!kvm_s390_use_sca_entries())

		return;

	atomic_andnot(CPUSTAT_ECALL_PEND, &vcpu->arch.sie_block->cpuflags);

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_ECALL_PEND);

	read_lock(&vcpu->kvm->arch.sca_lock);

	if (vcpu->kvm->arch.use_esca) {

		struct esca_block *sca = vcpu->kvm->arch.sca;
@@ -283,14 +283,14 @@ static void __set_cpu_idle(struct kvm_vcpu *vcpu) 


static void __unset_cpu_idle(struct kvm_vcpu *vcpu)

{

	atomic_andnot(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags);

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_WAIT);

	clear_bit(vcpu->vcpu_id, vcpu->kvm->arch.float_int.idle_mask);

}



static void __reset_intercept_indicators(struct kvm_vcpu *vcpu)

{

	atomic_andnot(CPUSTAT_IO_INT | CPUSTAT_EXT_INT | CPUSTAT_STOP_INT,

		    &vcpu->arch.sie_block->cpuflags);

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_IO_INT | CPUSTAT_EXT_INT |

				      CPUSTAT_STOP_INT);

	vcpu->arch.sie_block->lctl = 0x0000;

	vcpu->arch.sie_block->ictl &= ~(ICTL_LPSW | ICTL_STCTL | ICTL_PINT);

arch/s390/kvm/kvm-s390.c

+5 −6
Original line number Diff line number Diff line
@@ -2340,7 +2340,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) 
	vcpu->cpu = -1;

	if (vcpu->arch.cputm_enabled && !is_vcpu_idle(vcpu))

		__stop_cpu_timer_accounting(vcpu);

	atomic_andnot(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags);

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_RUNNING);

	vcpu->arch.enabled_gmap = gmap_get_enabled();

	gmap_disable(vcpu->arch.enabled_gmap);
@@ -2827,14 +2827,14 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 
		if (dbg->control & KVM_GUESTDBG_USE_HW_BP)

			rc = kvm_s390_import_bp_data(vcpu, dbg);

	} else {

		atomic_andnot(CPUSTAT_P, &vcpu->arch.sie_block->cpuflags);

		kvm_s390_clear_cpuflags(vcpu, CPUSTAT_P);

		vcpu->arch.guestdbg.last_bp = 0;

	}



	if (rc) {

		vcpu->guest_debug = 0;

		kvm_s390_clear_bp_data(vcpu);

		atomic_andnot(CPUSTAT_P, &vcpu->arch.sie_block->cpuflags);

		kvm_s390_clear_cpuflags(vcpu, CPUSTAT_P);

	}



	return rc;
@@ -2919,8 +2919,7 @@ static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu) 
	if (kvm_check_request(KVM_REQ_DISABLE_IBS, vcpu)) {

		if (ibs_enabled(vcpu)) {

			trace_kvm_s390_enable_disable_ibs(vcpu->vcpu_id, 0);

			atomic_andnot(CPUSTAT_IBS,

					  &vcpu->arch.sie_block->cpuflags);

			kvm_s390_clear_cpuflags(vcpu, CPUSTAT_IBS);

		}

		goto retry;

	}
@@ -3564,7 +3563,7 @@ void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu) 
		__disable_ibs_on_all_vcpus(vcpu->kvm);

	}



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

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_STOPPED);

	/*

	 * Another VCPU might have used IBS while we were offline.

	 * Let's play safe and flush the VCPU at startup.

arch/s390/kvm/kvm-s390.h

+5 −0
Original line number Diff line number Diff line
@@ -52,6 +52,11 @@ static inline void kvm_s390_set_cpuflags(struct kvm_vcpu *vcpu, u32 flags) 
	atomic_or(flags, &vcpu->arch.sie_block->cpuflags);

}



static inline void kvm_s390_clear_cpuflags(struct kvm_vcpu *vcpu, u32 flags)

{

	atomic_andnot(flags, &vcpu->arch.sie_block->cpuflags);

}



static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)

{

	return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED;

arch/s390/kvm/priv.c

+1 −1
Original line number Diff line number Diff line
@@ -216,7 +216,7 @@ int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu) 
	VCPU_EVENT(vcpu, 3, "enabling storage keys for guest: %d", rc);

	if (!rc) {

		if (atomic_read(&sie_block->cpuflags) & CPUSTAT_KSS)

			atomic_andnot(CPUSTAT_KSS, &sie_block->cpuflags);

			kvm_s390_clear_cpuflags(vcpu, CPUSTAT_KSS);

		else

			sie_block->ictl &= ~(ICTL_ISKE | ICTL_SSKE |

					     ICTL_RRBE);

arch/s390/kvm/vsie.c

+1 −1
Original line number Diff line number Diff line
@@ -935,7 +935,7 @@ static void register_shadow_scb(struct kvm_vcpu *vcpu, 
 */

static void unregister_shadow_scb(struct kvm_vcpu *vcpu)

{

	atomic_andnot(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags);

	kvm_s390_clear_cpuflags(vcpu, CPUSTAT_WAIT);

	WRITE_ONCE(vcpu->arch.vsie_block, NULL);

}