From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FF30C2D0CF for ; Tue, 24 Dec 2019 11:43:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D5F1120706 for ; Tue, 24 Dec 2019 11:43:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577187782; bh=sofTiE/O+Tz6TEQPuGCdXYrRHmwdFceNL5oa3+oLZ6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=scQZ7Xk23QPsufcEnksBgDVe1MNqY5bk4Tjio/Zali1xYLZkVKpqRYtXJSQditZ11 ECwousPOY2GYBoQJ/G6vVrD6jLPwKLybkIC7hqjoVL23mBdl2s6+mrjY+lVoJzyevt uiVx5vV3laBFjnWO41pR5Y+CyEmEL9PdVCCtO+Ug= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727190AbfLXLnB (ORCPT ); Tue, 24 Dec 2019 06:43:01 -0500 Received: from inca-roads.misterjones.org ([213.251.177.50]:48063 "EHLO inca-roads.misterjones.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726237AbfLXLnB (ORCPT ); Tue, 24 Dec 2019 06:43:01 -0500 Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by cheepnis.misterjones.org with esmtpsa (TLSv1.2:DHE-RSA-AES128-GCM-SHA256:128) (Exim 4.80) (envelope-from ) id 1iji5y-000169-H6; Tue, 24 Dec 2019 12:11:22 +0100 From: Marc Zyngier To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Cc: Eric Auger , James Morse , Julien Thierry , Suzuki K Poulose , Thomas Gleixner , Jason Cooper , Lorenzo Pieralisi , Andrew Murray , Zenghui Yu , Robert Richter Subject: [PATCH v3 14/32] irqchip/gic-v4.1: Suppress per-VLPI doorbell Date: Tue, 24 Dec 2019 11:10:37 +0000 Message-Id: <20191224111055.11836-15-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191224111055.11836-1-maz@kernel.org> References: <20191224111055.11836-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, eric.auger@redhat.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, tglx@linutronix.de, jason@lakedaemon.net, lorenzo.pieralisi@arm.com, Andrew.Murray@arm.com, yuzenghui@huawei.com, rrichter@marvell.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since GICv4.1 gives us a per-VPE doorbell, avoid programming anything else on VMOVI/VMAPI/VMAPTI and on any other action that would have otherwise resulted in a per-VLPI doorbell to be programmed. Reviewed-by: Zenghui Yu Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v3-its.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 403f5753e1ed..f00c8ddd3798 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -719,7 +719,7 @@ static struct its_vpe *its_build_vmapti_cmd(struct its_node *its, { u32 db; - if (desc->its_vmapti_cmd.db_enabled) + if (!is_v4_1(its) && desc->its_vmapti_cmd.db_enabled) db = desc->its_vmapti_cmd.vpe->vpe_db_lpi; else db = 1023; @@ -742,7 +742,7 @@ static struct its_vpe *its_build_vmovi_cmd(struct its_node *its, { u32 db; - if (desc->its_vmovi_cmd.db_enabled) + if (!is_v4_1(its) && desc->its_vmovi_cmd.db_enabled) db = desc->its_vmovi_cmd.vpe->vpe_db_lpi; else db = 1023; @@ -1353,6 +1353,13 @@ static void its_vlpi_set_doorbell(struct irq_data *d, bool enable) u32 event = its_get_event_id(d); struct its_vlpi_map *map; + /* + * GICv4.1 does away with the per-LPI nonsense, nothing to do + * here. + */ + if (is_v4_1(its_dev->its)) + return; + map = dev_event_to_vlpi_map(its_dev, event); if (map->db_enabled == enable) -- 2.20.1