* Jason Gunthorpe <jguntho...@obsidianresearch.com> wrote: > On Mon, Oct 12, 2009 at 10:20:46PM +0200, Ingo Molnar wrote: > > It might be more acceptable because the flag-hint mechanism can at most > > cause over-flushing - while with perf events we might miss to invalidate > > a range altogether. > > Right. Overflushing is not important, but missing an event entirely is > not recoverable (at least within the current kernel APIs).
So if we detect event loss in the perf event case (should not happen with sufficient buffering but it is a possibility the code should be prepared for) then we can just flush the [0,-1ULL] range, right? Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html