On March 3, 2015 1:15:42 PM EST, "Luis R. Rodriguez" <mcg...@suse.com> wrote: >On Tue, Mar 03, 2015 at 09:27:34AM -0500, Boris Ostrovsky wrote: >> On 03/03/2015 12:35 AM, Luis R. Rodriguez wrote: >>> On Mon, Feb 23, 2015 at 9:09 AM, David Vrabel ><david.vra...@citrix.com> wrote: >>>> On 23/02/15 16:01, Boris Ostrovsky wrote: >>>>> Commit 1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4") >>>>> introduced CR4 shadows. >>>>> >>>>> These shadows are initialized in early boot code. The commit >missed >>>>> initialization for 64-bit PV(H) guests that this patch adds. >>>> Applied to stable/for-linus-4.0, thanks. >>>> >>>> Boris, can you kick of a set of tests on this branch, please? >>> Do we know worst case what should blow up without this commit ? >> >> PVH guest will crash. > >Oh wow that is serious. And this is a reactive measure to a change >upstream, >it might be hard but it'd be nice if we can have a proactive >architecture >to address this. Don't mind me though, I realize this seems hard, just >thinking out loud right now. Did you find it through code inspection or >a test?
Boris runs every night on different hardware an regression test against the latest Linux kernel. > > Luis L -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/