On Iau, 2003-07-31 at 16:10, Jamie Lokier wrote:
> > And if the byte you are looking at was patched by another thread you've
> > blown it. Your emulation can only be so good 8) People do stuff like
> > patching instructions under software decode as a robustness check - its
> > normally pretty amusing
>
> On a uniprocessor 386, this is not a problem. Just disable preemption
> in the kernel decoder.
Wrong again. Thats a common myth but you see I can put the instruction on a page
so that its executed from a page I just did a read() into in another process. If
I'm really bored I'll use O_DIRECT but thats mostly for makign life really bad
for non cache coherent setups 8)
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:50 EST