On Sun, Jul 25, 2010 at 09:34:38PM +0300, Avi Kivity wrote: > On 07/25/2010 08:19 PM, Kevin O'Connor wrote: > >Only the ljmpw is in big real mode with a code address>64K - the > >"Disable protected mode" code is technically in 16bit protected mode. > >I'm not sure if that helps explain why it works. > > What happens is kvm enters real mode with cs.limit=0xffff, the > guest #GPs due to segment limit violation, and enters the emulator, > which emulates the far jump correctly. > > So this works, and will continue to work even after we fix limit > checking. It's still cleaner IMO to use normal code segments. Makes sense. I committed the patch that avoids this behavior to SeaBIOS git. -Kevin -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
