John Baldwin wrote:
> On 11-Jul-2002 Matthew Dillon wrote:
> > Here is my proposed fix for the page-zeroing problem w/ SMP. It
> > is untested (I'm about to test it)... I'm looking for comments on
> > the concept. If the comments are positive and my testing succeeds I
> > will commit it tonight.
> > Basically the idea is simple. Provide a function that mi_switch() can
> > call when switching in a thread. The page zeroing code sets this
> > function to cpu_invlpg(CADDR3) on switch-in, thus dealing with any
> > potential switch between cpu's with virtually no overhead (no overhead
> > that we care about anyway).
> > I daresay that this mechanism could be used for a number of other
> > purposes as well.
> > What do you think?
> Sounds fine to me. I'm not sure it will be all that useful for other
> things in the future but it conveniently solves the problem at hand
> at least.
I've almost completely replaced this code!
I suggested a function for activation a few days ago too, but was going
to leave it till after this commit, which I hoped to get done today.
This reactivates PG_G for SMP and avoids global invltlb's when we can
do finer grained shootdowns.
Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]
"All of this is for nothing if we don't go to the stars" - JMS/B5
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