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Originally Posted by photon
Google says AMD processors are vulnerable, so might want to wait until more info comes out
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Only for Spectre, not Meltdown. Google Project Zero says Meltdown, and the huge performance hit that fix causes, is specific to Intel processors. AMD systems will not be impacted
https://googleprojectzero.blogspot.c...with-side.html
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The researchers say they haven't been able to perform the same kind of kernel memory-based speculation on AMD or ARM processors, though they hold out some hope that some way of using this speculation offensively will be developed. While AMD has stated specifically that its chips don't speculate around kernel addresses in this way, ARM has said that some of its designs may be vulnerable, and ARM employees have contributed patches to Linux to protect against Meltdown.
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The PIT patch was pulled for AMD systems. So those AMD based systems will not have any performance hit.
https://twitter.com/phoronix/status/948725135971897345