On 9/27/18 8:28 PM, Michal Soltys wrote: > That's not precisely like that - spectre & friends workarounds can be > trivially disabled (e.g.: pti, spectre_v2, spec_store_bypass_disable, > l1tf) - bringing "old" nominal performance back (whether good/bad idea, > that of course depends on what/how you run your linux on for what > purpose). Not mentioning cpus that will eventually come not needing > those workarounds. > > So in this context audit=0 is a very viable thing - if one (and that's > probalby crushing majority of users) doesn't need this feature (directly > or indirectly). Even if you disable the mitigations, the fast path we're talking about here was simply deleted from linux.git -- it doesn't exist anymore, zero, zilch, squat, nada. -- Eli Schwartz Bug Wrangler and Trusted User
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