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From: Ingo Molnar <mingo@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 4/6] x86/boot: Assume MMIO if serial base address supplied via earlyprintk
Date: Tue, 16 Jan 2018 04:13:42 +0100	[thread overview]
Message-ID: <20180116031342.bxczth3ylbzdvk2r@gmail.com> (raw)
In-Reply-To: <20180114143254.15429-4-andriy.shevchenko@linux.intel.com>


* Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

> If user supplied serial base address via kernel command line and value
> is higher than IO space limit (64k boundary), assume for now that MMIO
> byte access is required.
> 
> Later we might expand or modify this if needed.

Is this a standard pattern for serial code configuration values?

Thanks,

	Ingo

  reply	other threads:[~2018-01-16  3:13 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-14 14:32 [PATCH v1 1/6] x86/boot: Convert early_serial_base to unsigned long Andy Shevchenko
2018-01-14 14:32 ` [PATCH v1 2/6] x86/boot: Introduce helpers for serial I/O Andy Shevchenko
2018-01-14 14:32 ` [PATCH v1 3/6] x86/boot: Add MMIO byte accessors Andy Shevchenko
2018-01-14 14:32 ` [PATCH v1 4/6] x86/boot: Assume MMIO if serial base address supplied via earlyprintk Andy Shevchenko
2018-01-16  3:13   ` Ingo Molnar [this message]
2018-01-16 10:55     ` Andy Shevchenko
2018-01-16 15:55       ` Ingo Molnar
2018-05-03 10:45         ` Andy Shevchenko
2018-01-14 14:32 ` [PATCH v1 5/6] x86/boot: Allow longer parameter list for earlyprintk Andy Shevchenko
2018-01-16  3:11   ` Ingo Molnar
2018-01-16 10:57     ` Andy Shevchenko
2018-01-16 15:51       ` Ingo Molnar
2018-05-03 11:48         ` Andy Shevchenko
2018-01-14 14:32 ` [PATCH v1 6/6] x86/boot: Support nocfg parameter " Andy Shevchenko
2018-01-16  3:12   ` Ingo Molnar
2018-01-16 11:00     ` Andy Shevchenko
2018-01-16 15:53       ` Ingo Molnar

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