From: Michael Mueller <mimu@linux.ibm.com>
To: pmorel@linux.ibm.com, KVM Mailing List <kvm@vger.kernel.org>
Cc: Linux-S390 Mailing List <linux-s390@vger.kernel.org>,
linux-kernel@vger.kernel.org,
kvm390-list@tuxmaker.boeblingen.de.ibm.com,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
David Hildenbrand <david@redhat.com>,
Cornelia Huck <cohuck@redhat.com>,
Halil Pasic <pasic@linux.ibm.com>
Subject: Re: [PATCH v5 08/15] KVM: s390: add the GIB and its related life-cyle functions
Date: Mon, 7 Jan 2019 17:25:05 +0100 [thread overview]
Message-ID: <1ef84b5f-179a-21e2-6ac2-b49f4c3ae5c3@linux.ibm.com> (raw)
In-Reply-To: <c244a27a-2d54-0b22-7df4-71f584aed6c0@linux.ibm.com>
On 03.01.19 10:49, Pierre Morel wrote:
> On 19/12/2018 20:17, Michael Mueller wrote:
>> The Guest Information Block (GIB) links the GISA of all guests
>> that have adapter interrupts pending. These interrupts cannot be
>> delivered because no vcpu of these guests is currently running in
>> SIE context. Instead, a GIB alert is issued on the host to schedule
>> these guests to run.
>
> IMHO "Instead" is not exact.
> The GIB alert is always issued on adapter interrupt if IAM is set even
> if the guest is running in SIE context.
>
> I would prefer to rephrase to something like:
> "If enabled, a GIB alert is issued on the host..." ?
I agree.
>
>
> Reviewed-by: Pierre Morel<pmorel@linux.ibm.com>
>
>
>>
>> This mechanism allows to process adapter interrupts for currently
>> not running guests.
>>
>> The GIB is created during host initialization and associated with
>> the Adapter Interruption Facility in case an Adapter Interruption
>> Virtualization Facility is available.
>>
>> The GIB initialization and thus the activation of the related code
>> will be done in an upcoming patch of this series.
>>
>> Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
>> Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
>> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
>> ---
>> arch/s390/include/asm/kvm_host.h | 10 +++++++++
next prev parent reply other threads:[~2019-01-07 16:25 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 19:17 [PATCH v5 00/15] KVM: s390: make use of the GIB Michael Mueller
2018-12-19 19:17 ` [PATCH v5 01/15] KVM: s390: unregister debug feature on failing arch init Michael Mueller
2018-12-19 20:10 ` Cornelia Huck
2018-12-20 7:49 ` Michael Mueller
2018-12-20 7:55 ` Christian Borntraeger
2018-12-19 19:17 ` [PATCH v5 02/15] KVM: s390: coding style issue kvm_s390_gisa_init/clear() Michael Mueller
2018-12-19 20:13 ` Cornelia Huck
2019-01-02 16:50 ` Pierre Morel
2019-01-07 16:16 ` Michael Mueller
2018-12-19 19:17 ` [PATCH v5 03/15] KVM: s390: factor out nullify_gisa() Michael Mueller
2018-12-19 19:17 ` [PATCH v5 04/15] KVM: s390: use pending_irqs_no_gisa() where appropriate Michael Mueller
2018-12-19 20:16 ` Cornelia Huck
2019-01-02 16:52 ` Pierre Morel
2018-12-19 19:17 ` [PATCH v5 05/15] KVM: s390: unify pending_irqs() and pending_irqs_no_gisa() Michael Mueller
2018-12-20 10:09 ` Michael Mueller
2018-12-20 11:06 ` Cornelia Huck
2018-12-20 11:49 ` Michael Mueller
2018-12-20 12:15 ` Halil Pasic
2018-12-20 12:21 ` Cornelia Huck
2018-12-20 12:33 ` Michael Mueller
2018-12-20 15:43 ` pierre morel
2018-12-20 16:40 ` Michael Mueller
2018-12-19 19:17 ` [PATCH v5 06/15] KVM: s390: remove prefix kvm_s390_gisa_ from static inline functions Michael Mueller
2018-12-20 12:24 ` Cornelia Huck
2018-12-20 14:37 ` Michael Mueller
2018-12-19 19:17 ` [PATCH v5 07/15] s390/cio: add function chsc_sgib() Michael Mueller
2018-12-19 19:17 ` [PATCH v5 08/15] KVM: s390: add the GIB and its related life-cyle functions Michael Mueller
2018-12-20 12:28 ` Cornelia Huck
2019-01-03 9:49 ` Pierre Morel
2019-01-07 16:25 ` Michael Mueller [this message]
2018-12-19 19:17 ` [PATCH v5 09/15] KVM: s390: add kvm reference to struct sie_page2 Michael Mueller
2018-12-19 19:17 ` [PATCH v5 10/15] KVM: s390: add functions to (un)register GISC with GISA Michael Mueller
2018-12-20 14:32 ` Michael Mueller
2019-01-02 17:29 ` Pierre Morel
2019-01-02 18:26 ` Pierre Morel
2019-01-04 13:19 ` Cornelia Huck
2019-01-07 17:38 ` Michael Mueller
2019-01-08 10:34 ` Cornelia Huck
2019-01-08 13:07 ` Michael Mueller
2019-01-08 13:35 ` Cornelia Huck
2019-01-08 13:36 ` Halil Pasic
2019-01-08 13:41 ` Cornelia Huck
2019-01-08 14:23 ` Halil Pasic
2018-12-19 19:17 ` [PATCH v5 11/15] KVM: s390: restore IAM in get_ipm() when IPM is clean Michael Mueller
2019-01-03 15:06 ` Pierre Morel
2019-01-07 18:17 ` Michael Mueller
2019-01-06 23:32 ` Halil Pasic
2019-01-08 8:06 ` Michael Mueller
2018-12-19 19:17 ` [PATCH v5 12/15] KVM: s390: do not restore IAM immediately before SIE entry Michael Mueller
2019-01-03 15:00 ` Pierre Morel
2019-01-07 17:53 ` Michael Mueller
2018-12-19 19:17 ` [PATCH v5 13/15] KVM: s390: add function process_gib_alert_list() Michael Mueller
2019-01-03 14:43 ` Pierre Morel
2019-01-07 19:18 ` Michael Mueller
2019-01-08 14:27 ` Halil Pasic
2019-01-09 11:39 ` Pierre Morel
2019-01-07 19:19 ` Michael Mueller
2019-01-08 6:37 ` Heiko Carstens
2019-01-08 12:59 ` Halil Pasic
2019-01-08 15:21 ` Michael Mueller
2019-01-08 18:34 ` Halil Pasic
2019-01-09 12:14 ` Pierre Morel
2019-01-09 13:10 ` Halil Pasic
2019-01-09 14:49 ` Pierre Morel
2019-01-09 16:18 ` Halil Pasic
2018-12-19 19:17 ` [PATCH v5 14/15] KVM: s390: add and wire function gib_alert_irq_handler() Michael Mueller
2019-01-03 15:16 ` Pierre Morel
2019-01-08 10:06 ` Michael Mueller
2019-01-09 12:35 ` Pierre Morel
2018-12-19 19:17 ` [PATCH v5 15/15] KVM: s390: start using the GIB Michael Mueller
2019-01-02 17:45 ` Pierre Morel
2019-01-08 9:03 ` Michael Mueller
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