From mboxrd@z Thu Jan 1 00:00:00 1970 From: vijay.kilari@gmail.com Subject: [PATCH v9 2/7] xen/arm: fallback to vcpu 0 if get_target_vcpu handler not exists Date: Thu, 4 Sep 2014 18:45:22 +0530 Message-ID: <1409836527-16526-3-git-send-email-vijay.kilari@gmail.com> References: <1409836527-16526-1-git-send-email-vijay.kilari@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1409836527-16526-1-git-send-email-vijay.kilari@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian.Campbell@citrix.com, julien.grall@linaro.org, stefano.stabellini@eu.citrix.com, stefano.stabellini@citrix.com, tim@xen.org, xen-devel@lists.xen.org Cc: Prasun.Kapoor@caviumnetworks.com, Vijaya Kumar K , jbeulich@suse.com, manish.jaggi@caviumnetworks.com, vijay.kilari@gmail.com List-Id: xen-devel@lists.xenproject.org From: Vijaya Kumar K if get_target_vcpu handler is not implemented. Fallback to vcpu0 target. This patch helps to be compatible with GICV3 driver which does not implement this handler. Signed-off-by: Vijaya Kumar K --- xen/arch/arm/vgic.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c index 6b41dbf..129b1b5 100644 --- a/xen/arch/arm/vgic.c +++ b/xen/arch/arm/vgic.c @@ -155,7 +155,11 @@ struct vcpu *vgic_get_target_vcpu(struct vcpu *v, unsigned int irq) unsigned long flags; vgic_lock_rank(v, rank, flags); - v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + if ( d->arch.vgic.handler->get_target_vcpu != NULL ) + v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + else + v_target = d->vcpu[0]; + vgic_unlock_rank(v, rank, flags); return v_target; } @@ -230,7 +234,10 @@ void vgic_disable_irqs(struct vcpu *v, uint32_t r, int n) while ( (i = find_next_bit(&mask, 32, i)) < 32 ) { irq = i + (32 * n); - v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + if ( d->arch.vgic.handler->get_target_vcpu != NULL ) + v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + else + v_target = d->vcpu[0]; p = irq_to_pending(v_target, irq); clear_bit(GIC_IRQ_GUEST_ENABLED, &p->status); gic_remove_from_queues(v_target, irq); @@ -256,7 +263,10 @@ void vgic_enable_irqs(struct vcpu *v, uint32_t r, int n) while ( (i = find_next_bit(&mask, 32, i)) < 32 ) { irq = i + (32 * n); - v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + if ( d->arch.vgic.handler->get_target_vcpu != NULL ) + v_target = d->arch.vgic.handler->get_target_vcpu(v, irq); + else + v_target = d->vcpu[0]; p = irq_to_pending(v_target, irq); set_bit(GIC_IRQ_GUEST_ENABLED, &p->status); spin_lock_irqsave(&v_target->arch.vgic.lock, flags); -- 1.7.9.5