linux-kernel - Re: [PATCH v3 3/8] KVM:CPUID: Add CPUID support for Guest CET

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Date:   Sun, 10 Mar 2019 20:18:16 +0800
From:   Yang Weijiang <weijiang.yang@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     rkrcmar@...hat.com, sean.j.christopherson@...el.com,
        jmattson@...gle.com, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, mst@...hat.com, yu-cheng.yu@...el.com,
        Zhang Yi Z <yi.z.zhang@...ux.intel.com>,
        weijiang.yang@...el.com
Subject: Re: [PATCH v3 3/8] KVM:CPUID: Add CPUID support for Guest CET

On Fri, Mar 08, 2019 at 12:32:12PM +0100, Paolo Bonzini wrote:
> On 25/02/19 14:27, Yang Weijiang wrote:
> > +				compacted = entry[i].eax &
> > +					(F(XSAVES) | F(XSAVEC));
> > +				entry[i].ebx = xstate_required_size(supported,
> > +								    compacted);
> 
> If XSAVES and XSAVEC are both false, just set ebx to 0 as it was before
> this patch.
> 
> Paolo
Thanks Paulo, it makes sense to do so, will change it in next version.