Re: [PATCH v3] i386/cpu_dump: support AVX512 ZMM regs dump

[Robert Hoo]

On Thu, 2021-03-25 at 06:39 -0600, Richard Henderson wrote:
> On 3/24/21 9:15 PM, Robert Hoo wrote:
> > > > +        } else if (env->xcr0 & XFEATURE_AVX) {
> > > 
> > > This is normally a 2-bit test.
> > 
> > I beg your pardon. What 2 bits?
> 
> I forget the names, but isn't the usual test xcr0 & 6 == 6?

6 stands for SSE state-component and AVX state-component.
I'm not sure about this.
Can you remember where did you this "xcr0 & 6 == 6"? I can look into
that.
> 
> > BTW, checkpatch didn't warn me on this. It escaped.:)
> 
> Heh.
> 
> 
> r~