On Fri, Sep 09, 2022 at 08:08:53PM +1200, Kai Huang wrote: > Currently on platform which has SGX enabled, if CONFIG_X86_SGX is not > enabled, the X86_FEATURE_SGX is not cleared, resulting in /proc/cpuinfo > shows "sgx" feature. This is not desired. > > Clear SGX feature bit if both SGX driver and KVM SGX are not enabled in > init_ia32_feat_ctl(). > > Signed-off-by: Kai Huang <kai.huang@xxxxxxxxx> Is it a pattern that flags are cleared when they are disabled by the kernel? I don't know the answer for this. I could imagine that sometimes you might want to know whether the CPU supports a feature, even if e.g. your distribution kernel does not. There's of course other ways to answer such qeustion, e.g. by using cpuid utility. BR, Jarkko
