Messages in this thread | | | Subject | Re: [PATCH 02/25] x86/cpufeatures: Add SGX1 and SGX2 sub-features | Date | Tue, 02 Mar 2021 09:48:56 -0600 | From | "Haitao Huang" <> |
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On Mon, 01 Mar 2021 05:43:06 -0600, Kai Huang <kai.huang@intel.com> wrote:
> On Mon, 2021-03-01 at 12:32 +0100, Borislav Petkov wrote: >> On Tue, Mar 02, 2021 at 12:28:27AM +1300, Kai Huang wrote: >> > I think some script can utilize /proc/cpuinfo. For instance, admin >> can have >> > automation tool/script to deploy enclave (with sgx2) apps, and that >> script can check >> > whether platform supports sgx2 or not, before it can deploy those >> enclave apps. Or >> > enclave author may just want to check /proc/cpuinfo to know whether >> the machine can >> > be used for testing sgx2 enclave or not. >> >> This doesn't sound like a concrete use of this. So you can hide it >> initially with "" until you guys have a use case. Exposing it later is >> always easy vs exposing it now and then not being able to change it >> anymore. >> > > Hi Haitao, Jarkko, > > Do you have more concrete use case of needing "sgx2" in /proc/cpuinfo? >
I don't have specific use cases so far. But I think users would expect all sub-features supported by the cpu in /proc/cpuinfo. And it is a more convenient and readily available tool than cpuid for verifying sgx2 enabled in HW. So it'd be just nice for cpuinfo to be consistent with cpuid output.
Thanks Haitao
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