[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] x86/vmx: Fixup removals from MSR load-lists
>>> On 04.04.19 at 16:42, <igor.druzhinin@xxxxxxxxxx> wrote: > Commit fd32dcfe ("x86/vmx: Don't leak EFER.NXE into guest context") > introduced a regression on Harpertown and earlier cores (Gen 1 VT-x) > where as soon as guest EFER becomes equal to Xen EFER > (almost any 64-bit VM) stale version of EFER is incorrectly > loaded into a guest causing almost immediate guest failure. I'm afraid this is not an overly helpful description, considering the actual fix. It's definitely not that commit which has introduced the bug - vmx_del_msr() has been there before. Hence the bug was only uncovered by the referenced commit. With a reference to the actual faulty commit added Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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