Changeset 26120 in vbox

Timestamp:

Feb 1, 2010 1:42:29 PM (15 years ago)

Author:

vboxsync

Message:

EMHandlerRCTmpl.h: todo update.

File:

trunk/src/VBox/VMM/EMHandleRCTmpl.h

-              r26066
+              r26120
         /*
+         * PGM pool flush pending (guest SMP only)
+         * PGM pool flush pending (guest SMP only).
+         */
+        /** @todo jumping back and forth between ring 0 and 3 can burn a lot of cycles
+         * if the EMT thread that's supposed to handle the flush is currently not active
+         * (e.g. waiting to be scheduled) -> fix this properly!
+         *
+         * Todo: jumping back and forth between ring 0 and 3 can burn a lot of cycles if the EMT thread that's supposed to handle
+         *       the flush is currently not active (e.g. waiting to be scheduled) -> fix this properly!
+         * bird: Since the clearing is global and done via a rendezvous any CPU can do
+         *       it. They would have to choose who to call VMMR3EmtRendezvous and send
+         *       the rest to VMMR3EmtRendezvousFF ... Hmm ... that's not going to work
+         *       all that well since the the latter will race the setup done by the
+         *       first.  Guess that means we need some new magic in that area for
+         *       handling this case. :/
          */
         case VINF_PGM_POOL_FLUSH_PENDING:

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