From: Timur Tabi <timur.tabi@ammasso.com>
To: Gerd Knorr <kraxel@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Will __pa(vmalloc()) ever work?
Date: Tue, 31 May 2005 13:59:53 -0500 [thread overview]
Message-ID: <429CB429.8090008@ammasso.com> (raw)
In-Reply-To: <20050531161345.GB24106@bytesex>
Gerd Knorr wrote:
> Can you fix that? If so, try that. Would be the best.
No, I cannot. The memory is passed to my driver from some other driver that I do not
control.
> I think you can't. What is "anywhere else"? Does that include
> userspace addresses?
No, but it might include the stack.
> Not sure how portable that is, but comparing the vaddr against
> the vmalloc address space could work. There are macros for
> that, VMALLOC_START & VMALLOC_END IIRC.
Thanks, I'll try that.
I still haven't gotten an answer to my question about whether pgd/pud/pmd/pte_offset will
obtain the physical address for a kmalloc'd buffer.
--
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 prev parent reply other threads:[~2005-05-31 19:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-27 19:26 Will __pa(vmalloc()) ever work? Timur Tabi
2005-05-27 19:29 ` 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 [this message]
2005-05-31 20:01 ` Russell King
2005-05-31 20:44 ` Brian Gerst
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