On Thu, 05 Jul 2007 13:19:41 +1000 Nick Piggin <[EMAIL PROTECTED]> wrote:
> >> From what I can work out, it is something like "at this point the page > >>should be uptodate, so at least the icache won't contain *inconsistent* > >>data, just old data which userspace should take care of flushing if it > >>modifies". Is that always true? > > > > > > I think it's true. But, in this case, i-cache doesn't contain *incositent* > > data. > > There are inconsistency between L2-Dcache and L3-mixed-cache. At > > L2-icache-miss, > > a cpu fetches data from L3 cache. > > This case seems defficult to be generalized... > > If there is something in the icache line that isn't the last data to > be stored at that address, isn't that inconsistent? > Hmm..do we have a chance to add do_flush_cache_if_not_filled_by_dma(page) before SetPageUptodate(page) ? -Kame - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
