linux-kernel - Re: [PATCH v2] KVM: s390: wire up bpb feature

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Message-Id: <f69c7130-171b-50cf-d295-1b8aca03b92d@de.ibm.com>
Date:   Thu, 18 Jan 2018 11:09:50 +0100
From:   Christian Borntraeger <borntraeger@...ibm.com>
To:     Cornelia Huck <cohuck@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
        kvm@...r.kernel.org, David Hildenbrand <david@...hat.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jon Masters <jcm@...hat.com>,
        Marcus Meissner <meissner@...e.de>,
        Jiri Kosina <jkosina@...e.cz>
Subject: Re: [PATCH v2] KVM: s390: wire up bpb feature



On 01/18/2018 10:59 AM, Cornelia Huck wrote:
> On Wed, 17 Jan 2018 14:44:34 +0100
> Christian Borntraeger <borntraeger@...ibm.com> wrote:
> 
>> The new firmware interfaces for branch prediction behaviour changes
>> are transparently available for the guest. Nevertheless, there is
>> new state attached that should be migrated and properly resetted.
>> Provide a mechanism for handling reset, migration and VSIE.
>>
>> Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
>> ---
>> v1->v2: - review feedback from David
>> 	- rename seb(c) into bpb(c)
>>  arch/s390/include/asm/kvm_host.h |  3 ++-
>>  arch/s390/include/uapi/asm/kvm.h |  5 ++++-
>>  arch/s390/kvm/kvm-s390.c         | 12 ++++++++++++
>>  arch/s390/kvm/vsie.c             | 10 ++++++++++
>>  include/uapi/linux/kvm.h         |  1 +
>>  5 files changed, 29 insertions(+), 2 deletions(-)
> 
> Reviewed-by: Cornelia Huck <cohuck@...hat.com>

Thanks
> 
> But I'd like to see some documentation (a line) for the new cap under
> Documentation/. However, this can be done as a separate update (we
> might be missing more).


Ok, I will work on a doc update patch.
Paolo, Radim, can you take this patch for 4.15?


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