From: Casey Leedom <casey_leedom@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: Re: ZERO_PAGE() vs. loadable modules in Redhat 4.4 i386 kernels ...
Date: Wed, 27 Jun 2007 15:43:42 -0700 (PDT) [thread overview]
Message-ID: <20070627224342.44393.qmail@web30508.mail.mud.yahoo.com> (raw)
In-Reply-To: <159834.25233.qm@web30515.mail.mud.yahoo.com>
Nevermind. I realized I was being an idiot. Sorry for the wasted bandwidth.
Basically, if we have a page that get_user_pages() returned to us, the only
way any part of the PGD/PUD/PMD maping hierarchy can be missing is if the page
is the ZERO_PAGE(). Thus I can use this to detect my ZERO_PAGE() failure mode.
Thanks for your help!
Casey
next prev parent reply other threads:[~2007-06-27 22:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-27 18:12 Casey Leedom
2007-06-27 18:39 ` Arjan van de Ven
2007-06-27 18:53 ` Casey Leedom
2007-06-27 20:18 ` Arjan van de Ven
2007-06-27 21:40 ` Casey Leedom
2007-06-27 22:43 ` Casey Leedom [this message]
2007-06-27 19:02 ` Hugh Dickins
2007-06-27 19:13 ` Casey Leedom
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