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Re: [Xen-devel] [PATCH] x86/vmx: Fixup removals from MSR load-lists



> From: Igor Druzhinin [mailto:igor.druzhinin@xxxxxxxxxx]
> Sent: Thursday, April 4, 2019 10:42 PM
> 
> 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.
> 
> Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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