Messages in this thread | | | Date | Tue, 13 Sep 2005 01:34:10 -0600 | From | "Jan Beulich" <> | Subject | Re: [patch] x86: fix ESP corruption CPU bug (take 2) |
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>>>Do you mean, eg, this? >>>http://www.ussg.iu.edu/hypermail/linux/kernel/0409.2/1533.html >> No, I don't. This talks about going through ring 1 intermediately, >> which isn't what I have in mind. >Well, like I said, 2 approaches do use the >kernel stack for the 16bit stack. One approach >uses ring-1 trampoline, the other one doesn't. >The posting I pointed to, was explicit about >the stack usage, but as for the ring-0 approach >while still using the kernel stack - here it is: >http://www.ussg.iu.edu/hypermail/linux/kernel/0410.0/1402.html > >Is this what you mean? This is pretty much all >about it, the third approach is in the kernel, >and there were no more, even under discussion.
Yes, this comes close. Still, I'm more interested to understand why this approach was *not* chosen, which doesn't seem to be covered by any of the (only two) followups.
Thanks again, Jan
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