Hi, On 12/18/2012 12:03 PM, Gerd Hoffmann wrote:
Hi,Can qemu not handle an mmio range where writes are trapped, but reads are not? That would force the use of the shadow variable, but should otherwise provide a nice speedup.No. vmexit is needed anyway btw, but the round-trip to qemu userspace could be short-cutted in theory. It's non-trivial though. Alex had a talk about it at kvm forum (covering ide).
Ok, then I'll respin the patch getting rid of the shadow variable. Regards, Hans
