On Wed, 2010-01-27 at 09:42 -0800, H. Peter Anvin wrote: > On 01/27/2010 05:59 AM, Steven Rostedt wrote:
> > I think the issue was that ring 0 was never meant to do that, where as, > > ring 3 does it all the time. Doesn't the dynamic library modify its > > text? > > > > No, it has nothing to do with ring. It has to do with modifying code > that another CPU could be executing at the same time, and with modifying > code on the same processor through another virtual alias (they are > different issues.) The same issues apply regardless of the CPL of the > processor. Thanks for clarifying. -- Steve
