On 07/12/2010 01:56 AM, Mohammed Gamal wrote:
fter some conversation with Avi concerning why unreal mode has been seen to work with KVM on Intel. It clears out the scenario is caused as follows: - guest enters big real mode - kvm squashes limit to 64k-1 - guest executes instructions with offset> 64k - cpu issues #GP due to limit violation - kvm handle_rmode_exception() -> emulator - emulator ignores limit, emulates instruction With these applied I am getting vmentry failures with SeaBIOS and gPXE. I could still get SeaBIOS to work with emulate_invalid_guest_state=1. So it's needless to say that these patches are not meant for merging!
Well, eventually you need to fix this.
-------- Changes from v2: - Addeded generic segment limit check helpers - Removed individual segment register segment helpers as they're no longer needed
What about the rest of my comments? -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. -- 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
