linux-kernel - Re: [PATCH] KVM: s390: reset crypto attributes for all vcpus

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Message-Id: <28eacee1-eafe-dc95-c008-61bc656b931c@linux.ibm.com>
Date:   Sun, 22 Apr 2018 17:53:21 +0200
From:   Halil Pasic <pasic@...ux.ibm.com>
To:     Tony Krowiak <akrowiak@...ux.vnet.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     borntraeger@...ibm.com, cohuck@...hat.com,
        pmorel@...ux.vnet.ibm.com, pasic@...ux.vnet.ibm.com,
        pbonzini@...hat.com, rkrcmar@...hat.com
Subject: Re: [PATCH] KVM: s390: reset crypto attributes for all vcpus



On 04/22/2018 05:06 PM, Tony Krowiak wrote:
> On 04/20/2018 08:26 AM, David Hildenbrand wrote:
>> On 19.04.2018 23:13, Tony Krowiak wrote:
>>> Introduces a new function to reset the crypto attributes for all
>>> vcpus whether they are running or not. Each vcpu in KVM will
>>> be removed from SIE prior to resetting the crypto attributes in its
>>> SIE state description. After all vcpus have had their crypto attributes
>>> reset the vcpus will be restored to SIE.
>>>
>>> This function is incorporated into the kvm_s390_vm_set_crypto(kvm)
>>> function to fix a reported issue whereby the crypto key wrapping
>>> attributes could potentially get out of synch for running vcpus.
>>>
>>> Reported-by: Halil Pasic <pasic@...ux.vnet.ibm.com>
>> A reported-by for a code refactoring is strange.
> 
> I was asked to include this.

Is this a refactoring or a fix? I the message you state that you are
fixing an issue (aka bug). If you are not, fixing an issue, but indeed
just refactoring, Suggested-by would be more appropriate.

Regards,
Halil