Date: Thu, 6 Dec 2001 23:17:58 -0600 From: Alfred Perlstein <bright@mu.org> To: David Xu <davidx@viasoft.com.cn> Cc: Nicolas Souchu <nsouch@fr.alcove.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: kld VM pager Message-ID: <20011206231758.J92148@elvis.mu.org> In-Reply-To: <3C10410E.9040805@viasoft.com.cn>; from davidx@viasoft.com.cn on Fri, Dec 07, 2001 at 12:09:50PM %2B0800 References: <20011206143022.H13566@cedar.alcove-fr> <3C10410E.9040805@viasoft.com.cn>
next in thread | previous in thread | raw e-mail | index | archive | help
* David Xu <davidx@viasoft.com.cn> [011206 22:15] wrote:
> FreeBSD does not have fault hook available, all faults are processed in
> vm_fault.
> I know Linux supports that idea, you can insert a fault hook to
> monitor some
> address range where fault occurs, and then graphics frame buffer can be
> supported.
I'm sure one could add a callback in vm_fault without much issue.
However this isn't the point of the hook. One can insert the
vm object into the vm map, when a fault occurs the vm_fault code
will call the pager handler to service it.
The only good part for having a fault hook in linux is most likely
for debug purposes.
--
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.'
http://www.morons.org/rants/gpl-harmful.php3
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20011206231758.J92148>