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 AC95CE77188 for ; Mon, 30 Dec 2024 15:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=H0Ta0DJsbzn2ZLhVqlv8dv42niwU17XW21qLA074XCI=; b=QxsOfZ9EZ5SLN9O+81hSCxdqVu /4R+y3snUPHDPnPjnXqcUfcTPoIvJCvJHdS3iwo3yh4sXqNXTgCq1kN4wu24I75CjxpXJBZLFNMos GNc2JYN75S7UufRUL7pjL0dZJEDx4UzNxwhATzg85R2wkt+a/PMwz6ZtG8UB+OM5v9itvWZVp86Yy ahEqOl5ZeNFZvYdSesNpRpj2dQoJoKxOtOtJq8a/kRZVdLEcyocbg2nm/s1i4CYf/fJKaeDZ4FTyM PwPjxjX+yugJBADr6nGZree7C8IHeNzpzEs5kl3DywdofOrT0+Ht/cptr4EYi6xboKvN6EWmBipVp pA38GkUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tSHje-00000005RYN-10Mh; Mon, 30 Dec 2024 15:31:14 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tSHiS-00000005ROO-0fkk; Mon, 30 Dec 2024 15:30:01 +0000 From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1735572596; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=H0Ta0DJsbzn2ZLhVqlv8dv42niwU17XW21qLA074XCI=; b=zV3N9C2wqQ1woRKwb0m1EnKxApoAQkr4JyzEwDQ/wJngmn5IVx5IDLb5pswfRUflrz8Ld1 Yrm82tMfbsi/Pez1o32LrPTaVjnS51mLcifOLysFYPU/x+xBq/fdWJPbnuaDtnBKgMdEGT L7AC0ANI7LTpNtZkO1q+dYjMHnwhPTEgP108wrQWxjAA3JvC3vZoeirwkPtoBOufAfbiOr 5AjD6YxA+SfAIqN1bGFSlucpYZc6SQ8U46TJIEurxHa83xuPW1Of/WvamlcbSt1UhOztw0 pCv3aeJhod6tz0/mPqwAtqAHEAzChVY0AeTeumrNZk4nXzeZIdsmEHuELMSA0g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1735572596; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=H0Ta0DJsbzn2ZLhVqlv8dv42niwU17XW21qLA074XCI=; b=rZH7+Zd0GKA7jczUq6tkXw5b34YBrxr3lAIPf9uYRC6eZ5S91ZjzC3JRJ+bIZGxr8nswI0 0W/EQcccnUbL+SAQ== To: Greg Kroah-Hartman Cc: Jiri Slaby , Petr Mladek , Sergey Senozhatsky , Steven Rostedt , Thomas Gleixner , Esben Haabendal , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Andy Shevchenko , Arnd Bergmann , Rengarajan S , Niklas Schnelle , Serge Semin , Wander Lairson Costa , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , Sunil V L , Matt Turner , Stefan Wahren , Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= , Kevin Hilman , Markus Schneider-Pargmann , Udit Kumar , Griffin Kroah-Hartman , linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Tony Lindgren Subject: Re: [PATCH tty-next v4 0/6] convert 8250 to nbcon In-Reply-To: <20241227224523.28131-1-john.ogness@linutronix.de> References: <20241227224523.28131-1-john.ogness@linutronix.de> Date: Mon, 30 Dec 2024 16:35:55 +0106 Message-ID: <84y0zxp4ss.fsf@jogness.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241230_073000_342735_4B073AB0 X-CRM114-Status: UNSURE ( 5.40 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2024-12-27, John Ogness wrote: > The changes since v3: > > - For serial8250_console_fifo_write() and > serial8250_console_byte_write(), use nbcon_can_proceed() > rather than repeatedly enter/exit unsafe regions. I will revert this particular change for v5. It is necessary to exit/enter unsafe regions per character so that handovers can occur mid-line. Using nbcon_can_proceed() only allows the hostile takeover case to perform mid-line interruptions. John