Messages in this thread | | | Date | Sun, 18 Nov 2018 10:37:28 +0200 | From | Jarkko Sakkinen <> | Subject | Re: [PATCH v17 06/23] x86/cpu/intel: Detect SGX support and update caps appropriately |
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On Fri, Nov 16, 2018 at 03:32:36PM -0800, Dave Hansen wrote: > On 11/15/18 5:01 PM, Jarkko Sakkinen wrote: > > +static void detect_sgx(struct cpuinfo_x86 *c) > > +{ > > + unsigned long long fc; > > + > > + rdmsrl(MSR_IA32_FEATURE_CONTROL, fc); > > + if (!(fc & FEATURE_CONTROL_LOCKED)) { > > + pr_err_once("sgx: IA32_FEATURE_CONTROL MSR is not locked\n"); > > + goto out_unsupported; > > + } > > This needs a check against the config option somewhere so the compiler > can toss it in its entirety if SGX is config'd out.
Certainly. I'll flag it in the next version.
/Jarkko
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