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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC968C433EF for ; Mon, 13 Dec 2021 09:40:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233193AbhLMJkB (ORCPT ); Mon, 13 Dec 2021 04:40:01 -0500 Received: from sin.source.kernel.org ([145.40.73.55]:33556 "EHLO sin.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233109AbhLMJiO (ORCPT ); Mon, 13 Dec 2021 04:38:14 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 2772ECE0E95; Mon, 13 Dec 2021 09:38:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C874BC341C8; Mon, 13 Dec 2021 09:38:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1639388291; bh=w6F+ty0ZxFSujMTStnXobz0I1cwsN2IrtuDJVFPJQZs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ofsZrZykbtcSaYfsIE7jlItacjBwPxzkvRxwAnQXjAES7zw0Cue3niyfLgrmsQATa JQ2sfWLNjvXPY9vrsydPs+2z60LHOb+imIp0O4ju7P9GtRUOz6BhjjfEkBcRGh2z32 44JEBmsQemfv4N+a4xUBvdwN1Az7dqgQMGvtiLlc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wudi Wang , Shaokun Zhang , Marc Zyngier Subject: [PATCH 4.14 52/53] irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL Date: Mon, 13 Dec 2021 10:30:31 +0100 Message-Id: <20211213092930.091021199@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211213092928.349556070@linuxfoundation.org> References: <20211213092928.349556070@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wudi Wang commit b383a42ca523ce54bcbd63f7c8f3cf974abc9b9a upstream. INVALL CMD specifies that the ITS must ensure any caching associated with the interrupt collection defined by ICID is consistent with the LPI configuration tables held in memory for all Redistributors. SYNC is required to ensure that INVALL is executed. Currently, LPI configuration data may be inconsistent with that in the memory within a short period of time after the INVALL command is executed. Signed-off-by: Wudi Wang Signed-off-by: Shaokun Zhang Signed-off-by: Marc Zyngier Fixes: cc2d3216f53c ("irqchip: GICv3: ITS command queue") Link: https://lore.kernel.org/r/20211208015429.5007-1-zhangshaokun@hisilicon.com Signed-off-by: Greg Kroah-Hartman --- drivers/irqchip/irq-gic-v3-its.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -531,7 +531,7 @@ static struct its_collection *its_build_ its_fixup_cmd(cmd); - return NULL; + return desc->its_invall_cmd.col; } static struct its_vpe *its_build_vinvall_cmd(struct its_cmd_block *cmd,