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 smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2F65CCD4F3C for ; Tue, 19 May 2026 16:56:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id C38EA40AD9; Tue, 19 May 2026 16:56:53 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id pBIf3y704_ru; Tue, 19 May 2026 16:56:52 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver= DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org E81BC40ABE DKIM-Signature: v=1; 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Tue, 19 May 2026 16:56:49 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id z31J0syIzqYv for ; Tue, 19 May 2026 16:56:49 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=horms@kernel.org; receiver= DMARC-Filter: OpenDMARC Filter v1.4.2 smtp2.osuosl.org 32FC34046D DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 32FC34046D Received: from sea.source.kernel.org (sea.source.kernel.org [IPv6:2600:3c0a:e001:78e:0:1991:8:25]) by smtp2.osuosl.org (Postfix) with ESMTPS id 32FC34046D for ; Tue, 19 May 2026 16:56:48 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 0E3644371F; Tue, 19 May 2026 16:56:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A380AC2BCB3; Tue, 19 May 2026 16:56:46 +0000 (UTC) Date: Tue, 19 May 2026 17:56:44 +0100 From: Simon Horman To: Dawid Osuchowski Cc: intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, stable@vger.kernel.org, Vladimir Medvedkin , Aleksandr Loktionov Message-ID: <20260519165644.GI98116@horms.kernel.org> References: <20260514163555.8243-1-dawid.osuchowski@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260514163555.8243-1-dawid.osuchowski@linux.intel.com> X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779209807; bh=11ckrE4HiKyRcuenxRTtM43EpwAeL4simpAQt8lARiI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=by40fzxPMi+9tYYRKgfw4EgSDYjRkus8L/nz2bjIbc2wr7jDxXvQb9oMKb7P5RIXG m9qCsqWriEqXaVOYLIXsoHEkiVCQNMSOwcHgqgYeyYW4u44jFvkjySKBKjjSGO2zNt jByNhknh7MyLNujcim9/kRAiZRcQ9Mb+GIHYxrneFiTRNcB8EeMlXjPVBOM8Xx27em wtDMi2WaSbaOGfaFJEtUK6qNmchu3SRXDx37DawJ85lJG4BjWh7aRTpf8tk8EKsKeb CuZfHdFBwcntFeG336gGDTVD/Ok76CIkmmjcxTr8nFXo0IePVfrMmGVFS+i/kfK1EX f1tgBX2kgiCtw== X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=by40fzxP Subject: Re: [Intel-wired-lan] [PATCH iwl-net] ice: fix VF interrupts cleanup X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Thu, May 14, 2026 at 06:35:55PM +0200, Dawid Osuchowski wrote: > When a virtual function sends an IRQ map command, the PF will set up > interrupts according to that request. However, because these interrupts are > never reset, the next time Virtual Function initializes, the interrupts are > still enabled for a given VF, which leads to performance degradation in > certain cases (e.g. Data Plane Development Kit) due to interrupts being > unexpectedly enabled and thus causing interrupt floods. > > Cc: stable@vger.kernel.org > Fixes: 1071a8358a28 ("ice: Implement virtchnl commands for AVF support") > Suggested-by: Vladimir Medvedkin > Reviewed-by: Aleksandr Loktionov > Signed-off-by: Dawid Osuchowski Reviewed-by: Simon Horman From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E037409100; Tue, 19 May 2026 16:56:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779209808; cv=none; b=IpN2R28cvPQ4oITf/sYfAOEhHa+tsEJIcDLZSwI6ilD6OgvZr5qvR7Ps0H8x0V+vOEWFBfNri9jZ51rVgl3QS55R86SMhScd9YEcQArZUdkl3x7atkfyNsGWGm43xGGYwP7acBy2WE8RftNIMvS6IaFgzxqygGXWvEaruvC+f+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779209808; c=relaxed/simple; bh=11ckrE4HiKyRcuenxRTtM43EpwAeL4simpAQt8lARiI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fEN8yr/vk5A7dIb5Fq3diR/7DujAmvKOVaVbRN8PJ4b/1Gz2cnPDoBGZuDNQ5qa2EjQzx4VNVzMU3SKlQaIz5V/yN2tCYlSibhctPo1QAsHcyGUrM9udyzj+Gqa6zaCXRa4QgkBkF7DL0bfAu04sMABCoNyCG/FhMrLhfk5CB7g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=by40fzxP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="by40fzxP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A380AC2BCB3; Tue, 19 May 2026 16:56:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779209807; bh=11ckrE4HiKyRcuenxRTtM43EpwAeL4simpAQt8lARiI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=by40fzxPMi+9tYYRKgfw4EgSDYjRkus8L/nz2bjIbc2wr7jDxXvQb9oMKb7P5RIXG m9qCsqWriEqXaVOYLIXsoHEkiVCQNMSOwcHgqgYeyYW4u44jFvkjySKBKjjSGO2zNt jByNhknh7MyLNujcim9/kRAiZRcQ9Mb+GIHYxrneFiTRNcB8EeMlXjPVBOM8Xx27em wtDMi2WaSbaOGfaFJEtUK6qNmchu3SRXDx37DawJ85lJG4BjWh7aRTpf8tk8EKsKeb CuZfHdFBwcntFeG336gGDTVD/Ok76CIkmmjcxTr8nFXo0IePVfrMmGVFS+i/kfK1EX f1tgBX2kgiCtw== Date: Tue, 19 May 2026 17:56:44 +0100 From: Simon Horman To: Dawid Osuchowski Cc: intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, stable@vger.kernel.org, Vladimir Medvedkin , Aleksandr Loktionov Subject: Re: [PATCH iwl-net] ice: fix VF interrupts cleanup Message-ID: <20260519165644.GI98116@horms.kernel.org> References: <20260514163555.8243-1-dawid.osuchowski@linux.intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260514163555.8243-1-dawid.osuchowski@linux.intel.com> On Thu, May 14, 2026 at 06:35:55PM +0200, Dawid Osuchowski wrote: > When a virtual function sends an IRQ map command, the PF will set up > interrupts according to that request. However, because these interrupts are > never reset, the next time Virtual Function initializes, the interrupts are > still enabled for a given VF, which leads to performance degradation in > certain cases (e.g. Data Plane Development Kit) due to interrupts being > unexpectedly enabled and thus causing interrupt floods. > > Cc: stable@vger.kernel.org > Fixes: 1071a8358a28 ("ice: Implement virtchnl commands for AVF support") > Suggested-by: Vladimir Medvedkin > Reviewed-by: Aleksandr Loktionov > Signed-off-by: Dawid Osuchowski Reviewed-by: Simon Horman