From: Thomas Sailer <sailer@ife.ee.ethz.ch>
To: Andy Henroid <andy_henroid@yahoo.com>
Cc: Jeff Garzik <jgarzik@mandrakesoft.com>, Linux-MM@kvack.org
Subject: Re: remap_page_range problem on 2.3.x
Date: Mon, 13 Mar 2000 14:19:27 +0100 [thread overview]
Message-ID: <38CCEADF.A6DE223A@ife.ee.ethz.ch> (raw)
In-Reply-To: <20000309175119.28794.qmail@web1306.mail.yahoo.com>
Andy Henroid wrote:
> Yes, the remap_page_range is done indirectly
> through mmap call to the /dev/mem driver.
I think I saw this too some time ago.
I tried to duplicate the kernel's view of the
address space above 0xc0000000 at an offset in
a usermode program. I ended up being able to
read the correct data from /dev/mem, but reading
from an mmaped page from /dev/mem returned completely
bogus data (all zero).
My code is in usb.in.tum.de, module usbstress,
files uhcidump.c and kmem*
Tom
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next prev parent reply other threads:[~2000-03-13 13:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-09 17:51 Andy Henroid
2000-03-13 13:19 ` Thomas Sailer [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-03-13 19:16 Andy Henroid
2000-03-08 2:05 Andy Henroid
2000-03-08 4:04 ` Jeff Garzik
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