From patchwork Thu Feb 11 10:16:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 12082691 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B2BEEC433E9 for ; Thu, 11 Feb 2021 10:19:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 82FAF64E8B for ; Thu, 11 Feb 2021 10:19:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229969AbhBKKTu (ORCPT ); Thu, 11 Feb 2021 05:19:50 -0500 Received: from mx2.suse.de ([195.135.220.15]:40916 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229639AbhBKKS1 (ORCPT ); Thu, 11 Feb 2021 05:18:27 -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=1613038660; 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; bh=in+h4lBDIRM6mJ7t9cKXZa5bGbgsEjGF9LUcGBiK4pw=; b=V6/nHildAeeP4mTaW9pkNSIVN3W5JG7oTeZ/pm8uEYQwO4UvFiHUpuKpMve/BpBv1v2hDc zSTmNSzLpmjpGw4gEVI+1q7BnJ17tQmdjF7FJ39oRAfLmWt2kbB7tj8L2NeYypbl1pGYHA D4i8R84Uh3YQj183ZThezUvLnAY9qNY= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 2F54EADA2; Thu, 11 Feb 2021 10:17:40 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org Cc: Juergen Gross , Boris Ostrovsky , Stefano Stabellini , stable@vger.kernel.org, Wei Liu , Paul Durrant , "David S. Miller" , Jakub Kicinski , Konrad Rzeszutek Wilk , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= , Jens Axboe Subject: [PATCH v2 0/8] xen/events: bug fixes and some diagnostic aids Date: Thu, 11 Feb 2021 11:16:08 +0100 Message-Id: <20210211101616.13788-1-jgross@suse.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The first four patches are fixes for XSA-332. The avoid WARN splats and a performance issue with interdomain events. Patches 5 and 6 are some additions to event handling in order to add some per pv-device statistics to sysfs and the ability to have a per backend device spurious event delay control. Patches 7 and 8 are minor fixes I had lying around. Juergen Gross (8): xen/events: reset affinity of 2-level event when tearing it down xen/events: don't unmask an event channel when an eoi is pending xen/events: avoid handling the same event on two cpus at the same time xen/netback: fix spurious event detection for common event case xen/events: link interdomain events to associated xenbus device xen/events: add per-xenbus device event statistics and settings xen/evtchn: use smp barriers for user event ring xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices .../ABI/testing/sysfs-devices-xenbus | 41 ++++ drivers/block/xen-blkback/xenbus.c | 2 +- drivers/net/xen-netback/interface.c | 24 ++- drivers/xen/events/events_2l.c | 22 +- drivers/xen/events/events_base.c | 190 ++++++++++++++---- drivers/xen/events/events_fifo.c | 7 - drivers/xen/events/events_internal.h | 14 +- drivers/xen/evtchn.c | 29 ++- drivers/xen/pvcalls-back.c | 4 +- drivers/xen/xen-pciback/xenbus.c | 2 +- drivers/xen/xen-scsiback.c | 2 +- drivers/xen/xenbus/xenbus_probe.c | 66 ++++++ include/xen/events.h | 7 +- include/xen/xenbus.h | 7 + 14 files changed, 323 insertions(+), 94 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-devices-xenbus