Messages in this thread | | | Date | Mon, 8 Jan 2018 18:19:43 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH RFC 2/4] x86/arch_prctl: add ARCH_GET_NOPTI and ARCH_SET_NOPTI to enable/disable PTI |
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On Mon, Jan 08, 2018 at 06:05:31PM +0100, Ingo Molnar wrote: > Note that there is somewhat of a fuzzy detail regarding AMD CPUs which are marked > as 'Meltdown safe': should an explicit request to turn on PTI be honored by the > kernel? Should that be some sort of separate 'force PTI on' attribute?
AMD should not have FEATURE_PTI enabled, and thus not end up in any code that cares about TIF_NOPTI.
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