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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 0542AEB64DB for ; Tue, 20 Jun 2023 14:59:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1BY5cikSahtprfOIjh6E8FegJo3Xy1mMOEuQXRzJNLE=; b=PoHTPnPNInyVot M2JPE/dkMMS74su0pv25RC7hVfFg9NCVq6gvUqtGtDRKrXHMsyQlRwd7Gt6ZHIgUpPLZ9UlsuxUeS 23DBG09yHVdHx4gxlFeX6gq+mifNZmERzgkdn4JsiBgzGI938u1q/mCLtycjcDRY1KU7BPXSRqcG6 TDRYFmvuMdVUjQ6lu4+KBfUDmDo8v1bxr37VnRN+N/6q9oUJ5KCHFuNhKtakv92sJD/dG+pBlI5qn RRbutNn9Nmx1zl/a5lPlsuwpoPgCuzGePe2G+t0x1yUZG+8zQhNQPZg8VzyhIx5EH0vhlG8humOHJ pIM5VQusIK37edSNSnAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qBcpH-00Bbuw-2n; Tue, 20 Jun 2023 14:59:23 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qBcpF-00BbtX-20 for linux-arm-kernel@lists.infradead.org; Tue, 20 Jun 2023 14:59:22 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 26C02612DC; Tue, 20 Jun 2023 14:59:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F52BC433CB; Tue, 20 Jun 2023 14:59:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1687273160; bh=3RjJgYHvxHz6U13usMLK7Uu8bvMMGhSroIZVzx3oyFg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=e/tsxQimJYwM/IURODA1JYov0VCxtw6gOiHrkgLqvXU7RlyBieG2stOcYlAXMAnri SHwVzzflOusIRfdRCXMf/AootEX1MKcw+CvOAD0LKhoxrvxgVUpyliN2HSRMZH6x0J osmGWymMAy4E7TTtAZHY62UhWufNZqtfnTqdEyXo= Date: Tue, 20 Jun 2023 16:59:18 +0200 From: Greg Kroah-Hartman To: Linux regressions mailing list Cc: Stefan Wahren , Sergey Organov , Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= , Fabio Estevam , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Stefan Wahren , linux-serial@vger.kernel.org, Sascha Hauer , NXP Linux Team , Pengutronix Kernel Team , Shawn Guo , Jiri Slaby , Tomasz =?utf-8?Q?Mo=C5=84?= , Linux ARM Subject: Re: Regression: serial: imx: overrun errors on debug UART Message-ID: <2023062046-jersey-facecloth-7a5d@gregkh> References: <20230325151100.mskydt3hwbnspqp4@pengutronix.de> <87mt3ynsa7.fsf@osv.gnss.ru> <87sfcy8ncu.fsf@osv.gnss.ru> <534ac8db-ae8f-1ea3-9aa9-2105db7f7a52@i2se.com> <203ce87f-2898-eb10-2f8c-f237859d75e6@leemhuis.info> <87ttw2vnn0.fsf@osv.gnss.ru> <3853881c-976f-dadc-b64b-4ffd8cc88cf0@leemhuis.info> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <3853881c-976f-dadc-b64b-4ffd8cc88cf0@leemhuis.info> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230620_075921_697789_EBA47D1B X-CRM114-Status: GOOD ( 20.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jun 20, 2023 at 04:47:10PM +0200, Linux regression tracking (Thorsten Leemhuis) wrote: > On 24.05.23 15:07, Stefan Wahren wrote: > > > > Am 23.05.23 um 21:44 schrieb Sergey Organov: > >> "Linux regression tracking (Thorsten Leemhuis)" > >> writes: > >> > >> Solving this would need to identify the cause of interrupts being > >> disabled for prolonged times, and nobody volunteered to investigate this > >> further. One suspect, the Linux serial console, has been likely excluded > >> already though, as not actually being in use for printk() output. > >> > > > > I don't think that we can exclude the serial console as a whole, i never > > made such a observation. But at least we can exclude kernel logging on > > the debug UART. > > Stefan, just wondering: was this ever addressed upstream? I assume it's > not, just wanted to be sure. > > I'm a bit unsure what to do with this and consider asking Greg for > advice, as he applied the patch. On one hand it's *IMHO* clearly a > regression (but for the record, some people involved in the discussion > claim it's not). OTOH the culprit was applied more than a year ago now, > so reverting it might cause more trouble than it's worth at this point, > as that could lead to regressions for other users. I'll be glad to revert this, but for some reason I thought that someone was working on a "real fix" here. Stefan, is that not the case? thanks, greg k-h _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel