From: "H. Peter Anvin" <hpa@zytor.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Russell King <linux@arm.linux.org.uk>,
Ingo Molnar <mingo@elte.hu>, John Stultz <john.stultz@linaro.org>
Subject: Re: [patch 5/5] i8253: Cleanup outb/inb magic
Date: Thu, 09 Jun 2011 07:41:00 -0700 [thread overview]
Message-ID: <4DF0DB7C.1040009@zytor.com> (raw)
In-Reply-To: <20110609133448.GA8772@linux-mips.org>
On 06/09/2011 06:34 AM, Ralf Baechle wrote:
> On Thu, Jun 09, 2011 at 01:08:30PM -0000, Thomas Gleixner wrote:
>
>> Remove the hysterical outb/inb_pit defines and use outb_p/inb_p in the
>> code.
>
> FWIW, I've traced the use of inb_p and outb_p to access the PIT timer
> all the way back to Linux 0.10
>
> I wonder if any of the systems affected actually has enough memory to boot
> a modern kernel or if the _p versions have become useless bagagge that
> should be dropped - cleanup which would then also allow more code to the
> iomap() API.
>
> I'm interested because quite a few MIPS systems have been built based on
> Intel, OPTi and other chipsets which may or may not have been affected.
>
On the x86 side, we already have configurability of the delay in
inb_p/outb_p... one option could be null delay.
-hpa
next prev parent reply other threads:[~2011-06-09 14:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-09 13:08 [patch 0/5] i8253: common clockevent Thomas Gleixner
2011-06-09 13:08 ` [patch 1/5] i8253: Create common clockevent implementation Thomas Gleixner
2011-06-24 14:28 ` [tip:timers/cleanup] " tip-bot for Thomas Gleixner
2011-06-25 20:03 ` [patch 1/5] " Stijn Devriendt
2011-06-30 8:40 ` Masami Hiramatsu
2011-07-01 8:40 ` [tip:timers/cleanup] " tip-bot for Thomas Gleixner
2011-06-09 13:08 ` [patch 2/5] x86: Use common i8253 clockevent Thomas Gleixner
2011-06-24 14:30 ` [tip:timers/cleanup] " tip-bot for Thomas Gleixner
2011-07-01 8:40 ` tip-bot for Thomas Gleixner
2011-06-09 13:08 ` [patch 3/5] mips: " Thomas Gleixner
2011-06-24 14:31 ` [tip:timers/cleanup] " tip-bot for Thomas Gleixner
2011-07-01 8:40 ` tip-bot for Thomas Gleixner
2011-06-09 13:08 ` [patch 4/5] arm: footbridge: " Thomas Gleixner
2011-06-24 14:33 ` [tip:timers/cleanup] arm: Footbridge: " tip-bot for Thomas Gleixner
2011-07-01 8:41 ` tip-bot for Thomas Gleixner
2011-06-09 13:08 ` [patch 5/5] i8253: Cleanup outb/inb magic Thomas Gleixner
2011-06-09 13:34 ` Ralf Baechle
2011-06-09 14:41 ` H. Peter Anvin [this message]
2011-06-24 14:35 ` [tip:timers/cleanup] " tip-bot for Thomas Gleixner
2011-07-01 8:41 ` tip-bot for Thomas Gleixner
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