On Sun, Dec 20, 2009 at 05:59:33PM +0200, Avi Kivity wrote: > On 12/20/2009 05:51 PM, Michael S. Tsirkin wrote: >> >>> Maybe we should make -cpu host the default. That will give the best >>> performance for casual users, more testing for newer features, and will >>> force management apps to treat migration much more seriously. The >>> downside is that casual users upgrading their machines might experience >>> issues with Windows. Feature compatibility is not just about migration. >>> >> This seems very aggressive. Can't we whitelist features that we know >> about? Further, doesn't KVM already do this? >> >> > > It does, but without -cpuid host you're stuck with qemu64 (kvm.ko > doesn't add features userspace didn't request).
Hmm, then, shouldn't either kvm or qemu mask features that we do not emulate well enough to make windows not crash? > -- > error compiling committee.c: too many arguments to function
