Date: Wed, 3 Jun 2015 18:55:50 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Bin Gao <bin.gao@linux.intel.com>
cc: Ingo Molnar <mingo@kernel.org>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Peter Hurley <peter@hurleysoftware.com>, Jiri Slaby <jslaby@suse.cz>,
        Borislav Petkov <bp@suse.de>,
        "Stuart R. Anderson" <stuart.r.anderson@intel.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 2/2] arch/x86: remove pci uart early console from
 early_prink.c
In-Reply-To: <20150602224305.GB64269@worksta>
Message-ID: <alpine.DEB.2.11.1506031854570.31424@nanos>
References: <20150529184123.GB13090@worksta> <20150602115433.GA20697@gmail.com> <20150602192036.GA52512@worksta> <alpine.DEB.2.11.1506022306350.20347@nanos> <20150602224305.GB64269@worksta>
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On Tue, 2 Jun 2015, Bin Gao wrote:

> On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Gleixner wrote:
> > What about the memory mapped uarts which have been source of trouble
> > in the past?
> > 
> > Thanks,
> > 
> > 	tglx
> 
> Not sure which specific early console you are referring to.
> Currently we have serial, ttyS, vga, dbgp, xen, efi and pciserial in
> arch/x86/kernel/early_printk.c, and only pciserial is memory mapped
> (but it's being removed).

Removed? So you kill the only way to get early serial output on
certain machines?
 
Thanks,

	tglx
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