| Date | Tue, 22 Apr 2014 16:40:51 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE* |
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On 04/22/2014 04:39 PM, Andi Kleen wrote: >> That simply will not work if you can take a #GP due to the "safe" MSR >> functions from NMI and #MC context, which would be my main concern. > > At some point the IST entry functions subtracted 1K while the > handler ran to handle simple nesting cases. > > Not sure that code is still there.
Doesn't help if you take an NMI on the first instruction of the #GP handler.
-hpa
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