linux-kernel - Re: [PATCH 1/2] KVM: SVM: Convert plain error code numbers to defines

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Message-ID: <Z2H-Y5eskBqeYo9Z@google.com>
Date: Tue, 17 Dec 2024 14:43:29 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: PavanKumar Paluri <papaluri@....com>
Cc: Melody Wang <huibo.wang@....com>, Paolo Bonzini <pbonzini@...hat.com>, KVM <kvm@...r.kernel.org>, 
	LKML <linux-kernel@...r.kernel.org>, Tom Lendacky <thomas.lendacky@....com>, 
	Dhaval Giani <dhaval.giani@....com>, Pavan Kumar <pavankumar.paluri@....com>
Subject: Re: [PATCH 1/2] KVM: SVM: Convert plain error code numbers to defines

On Tue, Dec 17, 2024, PavanKumar Paluri wrote:
> >> +#define GHCB_HV_RESP_ISSUE_EXCEPTION	1
> >> +#define GHCB_HV_RESP_MALFORMED_INPUT	2
> > 
> > Where is '2' actually documented?  I looked all over the GHCB and the only ones
> > I can find are '0' and '1'.
> > 
> >   0x0000
> >     o No action requested by the hypervisor.
> >   0x0001
> >     o The hypervisor has requested an exception be issued
> > 
> 
> GHCB spec (Pub# 56421, Rev:2.03), section 4.1 Invoking VMGEXIT documents

Ah, I only had Rev 2.00.  Found it in 2.03.

Thanks!

> 0x0002 as well.
> 
> 0x0002
>  o The hypervisor encountered malformed input for the VMGEXIT.