Messages in this thread | | | Date | Wed, 15 Jan 2014 05:52:17 -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 05:36 AM, Borislav Petkov wrote: >> >> msr_read() would essentially map to rdmsr_safe(). Each method has a >> return value that can be checked for failure. > > I'm not sure we want to use the _safe() variants by default as it would > generate the exception tables even in cases where they're clearly not > needed. >
It would be particularly silly if what you end up with is in effect to wrap msr_read/write() in a BUG_ON(), which is the effect of the current (trapping) form. There is something to be said for hard errors.
-hpa
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