Messages in this thread |  | | Subject | Re: [kernel-hardening] Re: [RFC, PATCH] x86_64: KAISER - do not mapkernel in user mode | From | Richard Weinberger <> | Date | Tue, 9 May 2017 16:57:28 +0200 |
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Am 09.05.2017 um 16:44 schrieb Fogh, Anders: >>> i.e. how does it perform on recent AMD systems? > > Sorry for the latency. Recent AMD is reported by Enrique Nissem to not > be vulnerable to the prefetch attack. TSX attack doesn't apply to AMD. > Hund, Willems & Holz wrote in 2013 that AMD was vulnerable to that > attack. The BTB is almost surely working in a different manner of > fashion if at all. So AMD may or may not be vulnerable to the DPF > attack, but none of the modern attacks should work - at least out of the > box.
But the promoted patch will also run on AMD systems, that's why I asked for the overhead.
Thanks, //richard
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