linux-mips
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Re: User applications

To: michaels@jungo.com (Michael Shmulevich)
Subject: Re: User applications
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Tue, 9 Jan 2001 12:17:26 +0000 (GMT)
Cc: macro@ds2.pg.gda.pl (Maciej W. Rozycki), linux-mips@oss.sgi.com
In-reply-to: <3A5AFAC8.CA682600@jungo.com> from "Michael Shmulevich" at Jan 09, 2001 01:49:29 PM
Sender: owner-linux-mips@oss.sgi.com
> promoted to the syscall status? What is the situation that a user in its 
> program
> would like
> to call cacheflush() ? Unless, of course, he is doing DoS.

A cache flush is not a denial of service attack. Its no less effective than a
1Mb memcpy 

> I can understand why we need this in kernel, for context switch, for example, 
> but
> as a syscall?...

Self modifying code, dynamic compilation, glibc trampolines


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