Re: [PATCH v30 01/20] x86/cpufeatures: x86/msr: Add Intel SGX hardware bits

[Jarkko Sakkinen]

On Wed, May 20, 2020 at 02:16:21PM +0200, Borislav Petkov wrote:
> On Fri, May 15, 2020 at 03:43:51AM +0300, Jarkko Sakkinen wrote:
> > From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> > 
> > Add X86_FEATURE_SGX from CPUID.(EAX=7, ECX=1), which informs whether the
> > CPU has SGX.
> > 
> > Add X86_FEATURE_SGX1 and X86_FEATURE_SGX2 from CPUID.(EAX=12H, ECX=0),
> > which describe the level of SGX support available [1].
> > 
> > Remap CPUID.(EAX=12H, ECX=0) bits to the Linux fake CPUID 8 in order to
> > conserve some space. Keep the bit positions intact because KVM requires
> > this. Reserve bits 0-7 for SGX in order to maintain this invariant also
> > when new SGX specific feature bits get added.
> 
> That paragraph needs dropping now.

I dropped it (in my tree).

> -- 
> Regards/Gruss,
>     Boris.
> 
> https://people.kernel.org/tglx/notes-about-netiquette

/Jarkko