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[125.30.85.146]) by smtp.gmail.com with ESMTPSA id o40sm804452pjb.18.2020.04.30.18.30.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Apr 2020 18:30:46 -0700 (PDT) From: Sergey Senozhatsky X-Google-Original-From: Sergey Senozhatsky Date: Fri, 1 May 2020 10:30:44 +0900 To: Alper Nebi Yasak Cc: Greg Kroah-Hartman , Jiri Slaby , Petr Mladek , Sergey Senozhatsky , linux-serial@vger.kernel.org, Steven Rostedt , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Morton , Andy Shevchenko , Arvind Sankar , Benjamin Herrenschmidt , Daniel Vetter , "David S. Miller" , Eric Biggers , Feng Tang , Grzegorz Halat , Lukas Wunner , Nicolas Pitre , Sam Ravnborg Subject: Re: [RFC PATCH v2 0/3] Prefer working VT console over SPCR and device-tree chosen stdout-path Message-ID: <20200501013044.GA288759@jagdpanzerIV.localdomain> References: <20200430161438.17640-1-alpernebiyasak@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200430161438.17640-1-alpernebiyasak@gmail.com> Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org On (20/04/30 19:14), Alper Nebi Yasak wrote: > | "console=tty0" | (no console arg) | > ------------------+-----------------------+-----------------------+ > QEMU VM | tty0 -WU (EC p ) | ttyAMA0 -W- (EC a) | > (w/ SPCR) | ttyAMA0 -W- (E a) | | > ------------------+-----------------------+-----------------------+ > Chromebook Plus | tty0 -WU (EC p ) | ttyS2 -W- (EC p a) | > (w/ stdout-path) | | tty0 -WU (E ) | > ------------------+-----------------------+-----------------------+ > Chromebook Plus | tty0 -WU (EC p ) | tty0 -WU (EC p ) | > (w/o either) | | | > ------------------+-----------------------+-----------------------+ > > This patchset tries to ensure that VT is preferred in those conditions > even in the presence of firmware-mandated serial consoles. These should > cleanly apply onto next-20200430. Well, if there is a "mandated console", then why would we prefer any other console? -ss