On Mon, Jan 14, 2013 at 06:53:14PM +0000, Alexander Graf wrote: > On 01/14/2013 07:50 PM, Will Deacon wrote: > > FWIW, KVM only needs this code for handling complex MMIO instructions, which > > aren't even generated by recent guest kernels. I'm inclined to suggest > > removing > > this emulation code from KVM entirely given that it's likely to bitrot as > > it is executed less and less often. > > That'd mean that you heavily limit what type of guests you're executing, > which I don't think is a good idea.
To be honest, I don't think we know whether that's true or not. How many guests out there do writeback accesses to MMIO devices? Even on older Linux guests, it was dependent on how GCC felt. I see where you're coming from, I just don't think we can quantify it either way outside of Linux. Will -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
