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=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 3B4E4C47096 for ; Sun, 6 Jun 2021 13:29:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 05BD5613DF for ; Sun, 6 Jun 2021 13:29:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 05BD5613DF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:Cc:To:From :Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=74ecyJB28JmZ+JNgbHDPNjU8PkJ/xDUWJd4stHTE6RQ=; b=w5ZLPZXJqr77kifxIHe5SPEp/N cDsY5Z2/TgbFazn3gCzoowIKpBanbNUpJxWsQXzUPNZD5pwJcH+dHBJrIAJ5kLFbsseKXWNRQdxBb OYAS1r8O7iN+bmdeUukg4b1wUrsdXvB6mq2MpOmz+kV7iCjWcj7oMQUQA2SvgqXeNievM2gKeGwxp AkHYvaq4pbkNC019wRQxctrEpCqGq48cdiKN7nzS0IuVIAUDfSYboTjYtyCJkDUpqZ2XpMfDZDE/G fWO1zcAbJ6uEkHqP36cjGymG6ZK2eUij2/rmtef/L50Vx/9CJKNL3RLZWMsNVaOB+p5SXW3/K9l79 xdcDsFIQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpsp8-000Kuu-GL; Sun, 06 Jun 2021 13:28:18 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpsp4-000KuF-Ve for linux-arm-kernel@lists.infradead.org; Sun, 06 Jun 2021 13:28:16 +0000 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 582DC613D4; Sun, 6 Jun 2021 13:28:14 +0000 (UTC) Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1lpsp2-005ldH-7W; Sun, 06 Jun 2021 14:28:12 +0100 MIME-Version: 1.0 Date: Sun, 06 Jun 2021 14:28:12 +0100 From: Marc Zyngier To: Sandor Bodo-Merle Cc: Lorenzo Pieralisi , Rob Herring , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] PCI: iproc: Support multi-MSI only on uniprocessor kernel In-Reply-To: <20210606123044.31250-2-sbodomerle@gmail.com> References: <20210606123044.31250-1-sbodomerle@gmail.com> <20210606123044.31250-2-sbodomerle@gmail.com> User-Agent: Roundcube Webmail/1.4.11 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: sbodomerle@gmail.com, lorenzo.pieralisi@arm.com, robh@kernel.org, kw@linux.com, bhelgaas@google.com, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210606_062815_069301_671495C2 X-CRM114-Status: GOOD ( 11.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2021-06-06 13:30, Sandor Bodo-Merle wrote: > The interrupt affinity scheme used by this driver is incompatible with > multi-MSI as it implies moving the doorbell address to that of another > MSI > group. This isn't possible for multi-MSI, as all the MSIs must have > the > same doorbell address. As such it is restricted to systems with a > single > CPU. > > Fixes: fc54bae28818 ("PCI: iproc: Allow allocation of multiple MSIs") > Reported-by: Marc Zyngier > Signed-off-by: Sandor Bodo-Merle Acked-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel