From patchwork Mon Dec 13 09:30:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 524138 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 E4C8AC433EF for ; Mon, 13 Dec 2021 09:43:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233118AbhLMJnt (ORCPT ); Mon, 13 Dec 2021 04:43:49 -0500 Received: from sin.source.kernel.org ([145.40.73.55]:35860 "EHLO sin.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233226AbhLMJlk (ORCPT ); Mon, 13 Dec 2021 04:41:40 -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 0F912CE0E8B; Mon, 13 Dec 2021 09:41:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF3A4C341C5; Mon, 13 Dec 2021 09:41:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1639388497; bh=g7TtM4lZrjv6vxgD9PUn+nEapo7Y78gLjwplUuzXz2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LJEm1XBETptYfesoxmnqtUwsHaFivB4VulDOzIP8WYIfFWlBfI+gAu+nA7lRdO0i2 iEjFBeN+bERjatfVrg+uJ5Dw+3MJxooEqjQb9ePYNmg17IHSKahEZLfloTLs21jyzK huV4hE9XWFlMIv4mUJ/fZWus9BbPYcmAfQo8e2go= 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 4.19 71/74] irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL Date: Mon, 13 Dec 2021 10:30:42 +0100 Message-Id: <20211213092933.183337020@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211213092930.763200615@linuxfoundation.org> References: <20211213092930.763200615@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@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 @@ -581,7 +581,7 @@ 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_node *its,