Re: [Qemu-devel] [PATCH 00/22] Dirty bitmap atomic access and optimizations

2015-04-20 Thread Stefan Hajnoczi
On Thu, Mar 26, 2015 at 06:38:18PM +0100, Paolo Bonzini wrote: > QEMU is currently accessing the dirty bitmaps very liberally, > which is understandable since the accesses are cheap. This is > however not good for squeezing maximum performance out of dataplane, > and is also not good if the access

[Qemu-devel] [PATCH 00/22] Dirty bitmap atomic access and optimizations

2015-03-26 Thread Paolo Bonzini
QEMU is currently accessing the dirty bitmaps very liberally, which is understandable since the accesses are cheap. This is however not good for squeezing maximum performance out of dataplane, and is also not good if the accesses become more expensive---as is the case when they use atomic primitiv