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=-20.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 8B866C5519F for ; Sun, 29 Nov 2020 13:53:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C560207FF for ; Sun, 29 Nov 2020 13:53:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="wgSRkb4L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727393AbgK2NxG (ORCPT ); Sun, 29 Nov 2020 08:53:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:34976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726462AbgK2NxG (ORCPT ); Sun, 29 Nov 2020 08:53:06 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8D7E52084C; Sun, 29 Nov 2020 13:52:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606657945; bh=n2tV1p816OOCVHx87N6We4fpb9I40M9zLfrltyfP5Kc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wgSRkb4L70Ipu46a86jrB1DrXqIB2Z3ES0eWCv9xepSUDeWd/Ae/bhYvNMFQuu6md baHKc4fGRj51sWAM4WdybHGdd4akX8oayscvvFrjlAKB+s4BWn8pmhA+ydrtjmKaXp LYl/DU6KK9Z8XSxPVDKwXmQ3aHmZBqJ8l77/RJNU= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1kjN7n-00ETZs-TV; Sun, 29 Nov 2020 13:52:24 +0000 From: Marc Zyngier To: linux-kernel@vger.kernel.org Cc: Thomas Gleixner , john.garry@huawei.com Subject: [PATCH 2/3] irqchip/gic-v3-its: Tag ITS device as shared if allocating for a proxy device Date: Sun, 29 Nov 2020 13:52:07 +0000 Message-Id: <20201129135208.680293-3-maz@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201129135208.680293-1-maz@kernel.org> References: <20201129135208.680293-1-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: linux-kernel@vger.kernel.org, tglx@linutronix.de, john.garry@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The ITS already has some notion of "shared" devices. Let's map the MSI_ALLOC_FLAGS_PROXY_DEVICE flag onto this internal property. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v3-its.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 0fec31931e11..b99a8ec6585e 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -3488,6 +3488,9 @@ static int its_msi_prepare(struct irq_domain *domain, struct device *dev, goto out; } + if (info->flags & MSI_ALLOC_FLAGS_PROXY_DEVICE) + its_dev->shared = true; + pr_debug("ITT %d entries, %d bits\n", nvec, ilog2(nvec)); out: mutex_unlock(&its->dev_alloc_lock); -- 2.28.0