On (Fri) 28 Aug 2015 [16:54:11], Liang Li wrote: > The buffer_find_nonzero_offset() will be called to check the zero page > during live migration, it's a hot function. buffer_find_nonzero_offset() > has already been optimized with SSE2 instructions, for platform that > supports AVX2, we can optimize this function with AVX2 instructions and > achieve about 25% performance gain.
This should be a good improvement. I recall Dave and I had a chat about this in the past too. I've not yet reviewed the patchset, but I doubt anyone will have objections. I'll review this shortly. Thanks, Amit