Re: STI architectural question (and lretq -- I'm not even kidding)

From: H. Peter Anvin
Date: Thu Jul 24 2014 - 18:15:38 EST

On 07/23/2014 04:10 PM, Andi Kleen wrote:
>> I think that, other than broadcast MCEs, #MC that hits in kernel mode
>> is non-recoverable, or at least can't safely be recovered. (There's a
>> separate APIC interrupt for recoverable errors, I think, but that's a
>> much saner interface.)
> There are multiple valid cases where #MC can return.

Indeed, not just broadcast #MC.


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