Re: More on the pentium workaround - the gotchas
Linus Torvalds (torvalds@transmeta.com)
Mon, 17 Nov 1997 09:41:43 -0800 (PST)
On Mon, 17 Nov 1997, Alan Cox wrote:
>
> > and exceptions to be delayed after movw %*, %%ss or popw %%ss, resulting
> > in more complexity and possibly dangerous situations.]
>
> write a page of movw to SS and then map it to all of your addres space
> and run it one day..
This shouldn't actually work. As far as I know, moving to SS only delays
interrupts until the next insutruction, _and_ it's not cumulative. The
effect being that the CPU will actually take interrupts and debug
exceptions every second instruction.
That's how I think it went. If somebody wants to test, feel free..
Linus