linux-kernel - Re: [RFC PATCH v6 064/104] KVM: TDX: Add helper assembly function to TDX vcpu

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Date:   Wed, 1 Jun 2022 13:50:05 -0700
From:   Isaku Yamahata <isaku.yamahata@...il.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     isaku.yamahata@...el.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, isaku.yamahata@...il.com,
        erdemaktas@...gle.com, Sean Christopherson <seanjc@...gle.com>,
        Sagi Shahar <sagis@...gle.com>
Subject: Re: [RFC PATCH v6 064/104] KVM: TDX: Add helper assembly function to
 TDX vcpu

On Tue, May 31, 2022 at 05:58:39PM +0200,
Paolo Bonzini <pbonzini@...hat.com> wrote:

> On 5/5/22 20:14, isaku.yamahata@...el.com wrote:
> > From: Isaku Yamahata <isaku.yamahata@...el.com>
> > 
> > TDX defines an API to run TDX vcpu with its own ABI.  Define an assembly
> > helper function to run TDX vcpu to hide the special ABI so that C code can
> > call it with function call ABI.
> > 
> > Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
> 
> "ret" needs to be "RET" to support SLS mitigation.

Thanks for pointing it out. As it's fixed in github repo. will be fixed on the
next series.
-- 
Isaku Yamahata <isaku.yamahata@...il.com>