On Sun, May 19, 2013 at 02:00:31AM +0100, Ben Hutchings wrote: > Dear KVM maintainers, it appears that there is a gap in x86 emulation, > at least on a 32-bit host. Stefan found this when running GRML, a live > distribution which can be downloaded from: > <http://download.grml.org/grml32-full_2013.02.iso>. His original > reported is at <http://bugs.debian.org/707257>. > Can you verify with latest linux.git HEAD? It works for me there on 64bit. There were a lot of problems fixed in this area in 3.9/3.10 time frame, so it would be helpful if you'll test 32bit before I install one myself. > On Thu, 2013-05-16 at 13:26 +0200, Stefan Pietsch wrote: > > On 09.05.2013 20:56, Stefan Pietsch wrote: > > > On 09.05.2013 03:08, Ben Hutchings wrote: > > > > > >> Please could you test some of the intermediate versions at > > >> <http://snapshot.debian.org/package/linux/> to find the first upstream > > >> version where this was broken. > > > > > > The first version which does not work is 3.6.4-1~experimental.1. > > > 3.5.5-1~experimental.1 works. > > > > > > I was able to start KVM under kernel version 3.8.12-1 after loading the > > "kvm_intel" module with the option "emulate_invalid_guest_state=0". > > And one of the many changes between 3.5 and 3.6 was to change the > default value of that parameter from 0 to 1. So we don't know when the > the bug in emulation was introduced (or if it was always there). > > Ben. > > -- > Ben Hutchings > The generation of random numbers is too important to be left to chance. > - Robert Coveyou -- Gleb. -- 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
