Re: User applications

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> 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