linux-kernel - Re: [PATCH v3 2/4] KVM: s390: remove unneeded srcu lock

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Message-ID: <20250522135733.311722-B-seiden@linux.ibm.com>
Date: Thu, 22 May 2025 15:57:33 +0200
From: Steffen Eiden <seiden@...ux.ibm.com>
To: Claudio Imbrenda <imbrenda@...ux.ibm.com>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        linux-s390@...r.kernel.org, frankja@...ux.ibm.com,
        borntraeger@...ibm.com, nsg@...ux.ibm.com, nrb@...ux.ibm.com,
        david@...hat.com, hca@...ux.ibm.com, agordeev@...ux.ibm.com,
        svens@...ux.ibm.com, gor@...ux.ibm.com, schlameuss@...ux.ibm.com
Subject: Re: [PATCH v3 2/4] KVM: s390: remove unneeded srcu lock

On Thu, May 22, 2025 at 03:22:57PM +0200, Claudio Imbrenda wrote:
> All paths leading to handle_essa() already hold the kvm->srcu.
> Remove unneeded srcu locking from handle_essa().
> Add lockdep assertion to make sure we will always be holding kvm->srcu
> when entering handle_essa().
> 
> Signed-off-by: Claudio Imbrenda <imbrenda@...ux.ibm.com>
> Reviewed-by: Nina Schoetterl-Glausch <nsg@...ux.ibm.com>
> Reviewed-by: Christian Borntraeger <borntraeger@...ux.ibm.com>

Reviewed-by: Steffen Eiden <seiden@...ux.ibm.com>