From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: hiren_mehta@agilent.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: accessing on-card ram/rom
Date: Wed, 08 Nov 2000 18:06:22 -0500 [thread overview]
Message-ID: <3A09DC6E.682CEC54@mandrakesoft.com> (raw)
In-Reply-To: <FEEBE78C8360D411ACFD00D0B74779718808E5@xsj02.sjs.agilent.com>
hiren_mehta@agilent.com wrote:
> I looked at the IO-mapping.txt file. It says that
> on x86 architecture it should not make any difference.
> It also says that "on x86 it _is_ the same memory space. So
> on x86 it actually works to just dereference a pointer".
> Any inputs on this ?
Don't depend on architecture-specific guarantees like this, it could
change, etc.
Use ioremap, it's portable, it's standard, it's the way to go. ;-)
Jeff
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next prev parent reply other threads:[~2000-11-08 23:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-08 22:57 accessing on-card ram/rom hiren_mehta
2000-11-08 23:06 ` Jeff Garzik [this message]
2000-11-09 19:27 ` Gérard Roudier
-- strict thread matches above, loose matches on Subject: below --
2000-11-08 22:48 MEHTA,HIREN (A-SanJose,ex1)
2000-11-08 22:53 ` Jeff Garzik
2000-11-09 13:03 ` Richard B. Johnson
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