From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753730AbdCPVRY (ORCPT ); Thu, 16 Mar 2017 17:17:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55406 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752397AbdCPVRX (ORCPT ); Thu, 16 Mar 2017 17:17:23 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 076A380474 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=eric.auger@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 076A380474 Subject: Re: [RFC PATCH 30/33] irqchip/gic-v4: Add VPE command interface To: Marc Zyngier , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu References: <1484648454-21216-1-git-send-email-marc.zyngier@arm.com> <1484648454-21216-31-git-send-email-marc.zyngier@arm.com> Cc: Thomas Gleixner , Jason Cooper , Christoffer Dall From: Auger Eric Message-ID: Date: Thu, 16 Mar 2017 22:17:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <1484648454-21216-31-git-send-email-marc.zyngier@arm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Thu, 16 Mar 2017 21:17:23 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi On 17/01/2017 11:20, Marc Zyngier wrote: > Add the required interfaces to schedule a VPE and perform a > VINVALL command. > > Signed-off-by: Marc Zyngier Reviewed-by: Eric Auger I think it would have helped me to get the VPE and VLPI API earlier since it brings the user point of you. Eric > --- > drivers/irqchip/irq-gic-v4.c | 31 +++++++++++++++++++++++++++++++ > include/linux/irqchip/arm-gic-v4.h | 2 ++ > 2 files changed, 33 insertions(+) > > diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c > index b9a0b34..7d74089 100644 > --- a/drivers/irqchip/irq-gic-v4.c > +++ b/drivers/irqchip/irq-gic-v4.c > @@ -109,3 +109,34 @@ void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes) > > irq_domain_free_irqs(irq, nr_vpes); > } > + > +static int its_send_vpe_cmd(struct its_vpe *vpe, struct its_cmd_info *info) > +{ > + unsigned int irq; > + irq_hw_number_t hwirq; > + > + WARN_ON(preemptible()); > + > + hwirq = vpe->vpe_db_lpi - vpe->its_vm->db_lpi_base; > + irq = irq_find_mapping(vpe->its_vm->domain, hwirq); > + > + return irq_set_vcpu_affinity(irq, info); > +} > + > +int its_schedule_vpe(struct its_vpe *vpe, bool on) > +{ > + struct its_cmd_info info; > + > + info.cmd_type = on ? SCHEDULE_VPE : DESCHEDULE_VPE; > + > + return its_send_vpe_cmd(vpe, &info); > +} > + > +int its_invall_vpe(struct its_vpe *vpe) > +{ > + struct its_cmd_info info = { > + .cmd_type = INVALL_VPE, > + }; > + > + return its_send_vpe_cmd(vpe, &info); > +} > diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h > index 2463d70..1c58add 100644 > --- a/include/linux/irqchip/arm-gic-v4.h > +++ b/include/linux/irqchip/arm-gic-v4.h > @@ -91,5 +91,7 @@ struct its_cmd_info { > > int its_alloc_vcpu_irqs(struct its_vm *vm, struct its_vpe **vpes, int nr_vpes); > void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes); > +int its_schedule_vpe(struct its_vpe *vpe, bool on); > +int its_invall_vpe(struct its_vpe *vpe); > > #endif >