linux-kernel - Re: [PATCH v9 2/3] s390x: KVM: guest support for topology function

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Message-ID: <ecf827ee-4b07-c999-064d-96d77607cf1c@linux.ibm.com>
Date:   Thu, 12 May 2022 13:41:56 +0200
From:   Janosch Frank <frankja@...ux.ibm.com>
To:     Pierre Morel <pmorel@...ux.ibm.com>, kvm@...r.kernel.org
Cc:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        borntraeger@...ibm.com, cohuck@...hat.com, david@...hat.com,
        thuth@...hat.com, imbrenda@...ux.ibm.com, hca@...ux.ibm.com,
        gor@...ux.ibm.com, wintera@...ux.ibm.com, seiden@...ux.ibm.com,
        nrb@...ux.ibm.com
Subject: Re: [PATCH v9 2/3] s390x: KVM: guest support for topology function

On 5/6/22 11:24, Pierre Morel wrote:
> We let the userland hypervisor know if the machine support the CPU
> topology facility using a new KVM capability: KVM_CAP_S390_CPU_TOPOLOGY.

Nope, we indicate KVM's support which is based on the machine's support.

On the same note: Shouldn't the CAP indication be part of the last 
patch? The resets are needed for a full support of this feature, no?