From: Timur Tabi <timur.tabi@ammasso.com>
To: linux-kernel@vger.kernel.org
Subject: Will __pa(vmalloc()) ever work?
Date: Fri, 27 May 2005 14:26:36 -0500 [thread overview]
Message-ID: <4297746C.10900@ammasso.com> (raw)
I have a driver that calls __pa() on an address obtained via vmalloc(). This is not
supposed to work, and yet oddly it appears to. Is there a possibility, even a remote one,
that __pa() will return the correct physical address for a buffer returned by the
vmalloc() function?
Also, does the pgd/pmd/pte page-table walking work on addresses returned by kmalloc(), or
do I have to use __pa() to get the physical address?
--
Timur Tabi
Staff Software Engineer
timur.tabi@ammasso.com
One thing a Southern boy will never say is,
"I don't think duct tape will fix it."
-- Ed Smylie, NASA engineer for Apollo 13
next reply other threads:[~2005-05-27 19:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-27 19:26 Timur Tabi [this message]
2005-05-27 19:29 ` Will __pa(vmalloc()) ever work? Christoph Hellwig
2005-05-27 19:54 ` Timur Tabi
2005-05-27 20:31 ` Arnd Bergmann
2005-05-28 16:16 ` Russell King
2005-05-30 9:38 ` Gerd Knorr
2005-05-31 15:51 ` Timur Tabi
2005-05-31 16:13 ` Gerd Knorr
2005-05-31 18:59 ` Timur Tabi
2005-05-31 20:01 ` Russell King
2005-05-31 20:44 ` Brian Gerst
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