* Anthony Liguori ([email protected]) wrote:
> This is actually very conservative seeing as how disabling CR4.PGE
> should be sufficient to flush global pages on modern processors. I
> suspect you're getting preempted while it's running.
>
Sorry, I just realized that I rejected your preemption explanation
without explaining why:
1 - In my "Text Section" lock code, which is the original place where I
triggered the problem, I take a spinlock around these operations, which
disables preemption.
2 - My sample module plays alone in its own data structures: there is
only one thread accessing the data at a given time (because I do only
one file open at a given time, which I control).
Regards,
Mathieu
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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