From: mnm.kernel@gmail.com (Manavendra Nath Manav)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Page fault in kernel code
Date: Tue, 9 Sep 2014 18:53:55 +0530 [thread overview]
Message-ID: <CAJKgH8C1cgQmJFJSBsNWB_tK9yWHZUaEUyimvm60d-YOCFeD0Q@mail.gmail.com> (raw)
In-Reply-To: <CAJKgH8Df51ZL-BaN_zBmtP=2tjxh5po6KWdbR1Q7LwiR2DZzTg@mail.gmail.com>
While reading the book Essential Linux device drivers it says "user mode
code is allowed to page fault, however, whereas kernel mode code isn't".
Why is it so? Why can't kernel mode code handle the page fault and reload
the page from swap? Also, can page fault occur when kernel is executing in
process context and/or interrupt context?
-- manav m-n
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next parent reply other threads:[~2014-09-09 13:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAJKgH8Df51ZL-BaN_zBmtP=2tjxh5po6KWdbR1Q7LwiR2DZzTg@mail.gmail.com>
2014-09-09 13:23 ` Manavendra Nath Manav [this message]
2014-09-09 14:25 ` Page fault in kernel code Greg KH
2014-09-09 15:51 ` Valdis.Kletnieks at vt.edu
2014-09-09 16:54 ` Jeff Haran
2014-09-10 9:15 ` Manavendra Nath Manav
2014-09-10 12:54 ` Valdis.Kletnieks at vt.edu
2014-09-10 14:52 ` Manavendra Nath Manav
2014-09-11 12:03 ` Leon Romanovsky
2014-09-11 14:19 ` Christoph Lameter
2014-09-11 14:53 ` Miles MH Chen
2014-09-11 15:26 ` Leon Romanovsky
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