Messages in this thread | | | Date | Thu, 14 May 2020 18:20:54 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v29 00/20] Intel SGX foundations |
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On Thu, May 14, 2020 at 09:15:59AM -0700, Sean Christopherson wrote: > I'm not opposed to adding a kernel param to disable SGX. At one point > there was a proposal to extend clearcpuid to allow disabling multiple > feature bits, but it looks like that went the way of the dodo. > > Note, such a param would disable SGX entirely, e.g. clear the feature bit > in /proc/cpuinfo and prevent any in-kernel SGX code from running.
It is a usual practice for big features like SGX to add a "nosgx" cmdline param to disable it in case something goes south. We do this for all features - see all "no*" switches in Documentation/admin-guide/kernel-parameters.txt
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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