Hi, On x86_64, every memory page entry has a bit (4) to control its cache method: write-back or write-through.
But even on identity mapped pages, you still use paging. Say, I want a page to be uncached; I can use the PAT to Uncached. In this case, what happens to the bit 4 of the accessed page? is it ignored? Thanks -- Alex _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-amd64 To unsubscribe, send any mail to "[email protected]"
