Comment 246 for bug 541511

(In reply to comment #158)
> Due to the (new) failures reported with v8 I'm reluctant to submit the
> patch as-is.

Patch v8 performed well on my 852GME. In three weeks of regular usage and limited stress testing the kernel reported exactly one flush failure. I did not notice any slowdown compared to unpatched kernels, and there is no measurable difference as reported in comment #122.
Patch v9 is just as good of course.

(In reply to comment #140)
> I'll look into allocating the pages as one big chunk (ie higher order
> alloc)

There is a decent chance that the pages are already allocated in one chunk. At least on my machine the pages happen to be allocated consecutively. (verified with page_to_phys(intel_private.i8xx_pages[i]))
You could make your next patch print the physical addresses. If other machines behave like mine but still show more failures, then you do not need to bother with explicit higher order allocations.