On Sat, 09 Jul 2011 14:06:23 -0700, Keith Packard <[email protected]> wrote: > On Sat, 09 Jul 2011 21:50:26 +0100, Chris Wilson <[email protected]> > wrote: > Sure, it's permitted, so ideally we'd detect this abuse and fall back to > the slow path, but we need a cheap check which takes the slow path, > perhaps pessimistically.
If we prefault every page, then we only hit the slow path under system load combined or severe memory pressure. I don't think that is too bad a compromise. I can stick some counters in there and find out what the impact actually is. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
