From: Rajeev Bector <rajeev_bector@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: vmalloc and kiobuf questions ?
Date: Wed, 18 Jul 2001 10:46:12 -0700 (PDT) [thread overview]
Message-ID: <20010718174612.48434.qmail@web14405.mail.yahoo.com> (raw)
MM Gurus,
In trying to understand how to map driver
memory into user space memory, I have the following
questions:
1) Is there a limit to how much memory
I can allocate using vmalloc() ?
(This is regular RAM)
2) I want to map the vmalloc'ed memory
to user space via mmap(). I've read
that remap_page_range() will not do it
and I have to do it using nopage
handlers ? Is that true ? Is there
a simple answer to why is that the case ?
3) I've also read the kiobufs will simplify
all this. Is there a documentation on
kiobufs - what they can and cannot do ?
Are kiobufs part of the standard kernel
now ?
Thanks in advance for your answers !
Rajeev
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next reply other threads:[~2001-07-18 17:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-18 17:46 Rajeev Bector [this message]
2001-07-18 18:34 ` Anton Altaparmakov
2001-07-18 18:49 Ramil.Santamaria
2001-07-19 3:49 Nitin Dhingra
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