From patchwork Sat Feb 6 10:49:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juergen Gross X-Patchwork-Id: 378025 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 B2B09C433DB for ; Sat, 6 Feb 2021 10:51:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D05764EE0 for ; Sat, 6 Feb 2021 10:51:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229715AbhBFKup (ORCPT ); Sat, 6 Feb 2021 05:50:45 -0500 Received: from mx2.suse.de ([195.135.220.15]:52492 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229691AbhBFKul (ORCPT ); Sat, 6 Feb 2021 05:50:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1612608587; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VlVL2Y2ASTFVpwcU4SmdSz79vlZWGd1T5oGBYzvUtKQ=; b=CaAOHRpv7RYB3U4+TM6JjEfbGxTHtF6cA58Si23ab7AwqoG6YglxUsLmvFuf0c94PPFVIm SpAadYtJiVApk9QAnqoPFKPJPHt+6euf4qwQg6uIr8CsiyoWiW+qlFD/zWnyEkhfhkHS8b Gs1DtsywWPRDSXVKB3DIktuDeZYkblE= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1DFC9AD78; Sat, 6 Feb 2021 10:49:47 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Cc: Juergen Gross , Boris Ostrovsky , Stefano Stabellini , stable@vger.kernel.org Subject: [PATCH 3/7] xen/events: fix lateeoi irq acknowledgment Date: Sat, 6 Feb 2021 11:49:28 +0100 Message-Id: <20210206104932.29064-4-jgross@suse.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210206104932.29064-1-jgross@suse.com> References: <20210206104932.29064-1-jgross@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org When having accepted an irq as result from receiving an event the related event should be cleared. The lateeoi model is missing that, resulting in a continuous stream of events being signalled. Fixes: 54c9de89895e0a ("xen/events: add a new late EOI evtchn framework") Cc: stable@vger.kernel.org Signed-off-by: Juergen Gross --- drivers/xen/events/events_base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c index 6a836d131e73..7b26ef817f8b 100644 --- a/drivers/xen/events/events_base.c +++ b/drivers/xen/events/events_base.c @@ -1826,6 +1826,7 @@ static void lateeoi_ack_dynirq(struct irq_data *data) if (VALID_EVTCHN(evtchn)) { info->eoi_pending = true; mask_evtchn(evtchn); + clear_evtchn(evtchn); } } @@ -1838,6 +1839,7 @@ static void lateeoi_mask_ack_dynirq(struct irq_data *data) info->masked = true; info->eoi_pending = true; mask_evtchn(evtchn); + clear_evtchn(evtchn); } }