Messages in this thread | | | Date | Wed, 15 Jan 2014 20:11:14 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [tip:x86/urgent] x86, cpu, amd: Add workaround for family 16h, erratum 793 |
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On 01/15/2014 10:38 AM, Ingo Molnar wrote: > > Right, the fact that most of our MSR accesses today are > crash-on-failure, which happens to trigger crashes on a regular > schedule, where most of the crashes are 'harmless' situation except > that they crash the systems for good. > > So I think defaulting to soft failures is the right approach. >
Well, as I said, as long as people don't start doing:
BUG_ON(msr_read(...))
... 'cuz that's just silly. Also, on 64 bits the code generated by going from 2x32 bits to 1x64 and sometimes back can add up (on 32 bits there is no difference.)
-hpa
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