From: Cornelia Huck <cohuck@redhat.com>
To: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>,
Tony Krowiak <akrowiak@linux.vnet.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, freude@de.ibm.com, schwidefsky@de.ibm.com,
heiko.carstens@de.ibm.com, kwankhede@nvidia.com,
bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com,
alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com,
alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com,
jjherne@linux.vnet.ibm.com, thuth@redhat.com,
pasic@linux.vnet.ibm.com, berrange@redhat.com,
fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com
Subject: Re: [PATCH v6 05/21] KVM: s390: CPU model support for AP virtualization
Date: Mon, 2 Jul 2018 17:41:03 +0200 [thread overview]
Message-ID: <20180702174103.5d1ce603.cohuck@redhat.com> (raw)
In-Reply-To: <276b5ae7-7f27-faae-1e5a-0d4c084139e9@linux.ibm.com>
On Mon, 2 Jul 2018 11:37:11 -0400
Tony Krowiak <akrowiak@linux.ibm.com> wrote:
> On 07/02/2018 10:38 AM, Christian Borntraeger wrote:
> >
> > On 06/29/2018 11:11 PM, Tony Krowiak wrote:
> >> Introduces a new CPU model feature and two CPU model
> >> facilities to support AP virtualization for KVM guests.
> >>
> >> CPU model feature:
> >>
> >> The KVM_S390_VM_CPU_FEAT_AP feature indicates that
> >> AP instructions are available on the guest. This
> >> feature will be enabled by the kernel only if the AP
> >> instructions are installed on the linux host. This feature
> >> must be specifically turned on for the KVM guest from
> >> userspace to use the VFIO AP device driver for guest
> >> access to AP devices.
> >>
> >> CPU model facilities:
> >>
> >> 1. AP Query Configuration Information (QCI) facility is installed.
> >>
> >> This is indicated by setting facilities bit 12 for
> >> the guest. The kernel will not enable this facility
> >> for the guest if it is not set on the host. This facility
> >> must not be set by userspace if the KVM_S390_VM_CPU_FEAT_AP
> >> feature is not installed.
> >>
> >> If this facility is not set for the KVM guest, then only
> >> APQNs with an APQI less than 16 will be available to the
> >> guest regardless of the guest's matrix configuration. This
> >> is a limitation of the AP bus running on the guest.
> >>
> >> 2. AP Facilities Test facility (APFT) is installed.
> >>
> >> This is indicated by setting facilities bit 15 for
> >> the guest. The kernel will not enable this facility for
> >> the guest if it is not set on the host. This facility
> >> must not be set by userspace if the KVM_S390_VM_CPU_FEAT_AP
> >> feature is not installed.
> >>
> >> If this facility is not set for the KVM guest, then no
> >> AP devices will be available to the guest regardless of
> >> the guest's matrix configuration. This is a limitation
> >> of the AP bus running under the guest.
> >>
> >> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
> >> Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
> >> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
> > I think it probably should be at the end of the series, other than that its good.
>
> If I move this to the end of the series, the very next patch checks the
>
> KVM_S390_VM_CPU_FEAT_AP feature?
Introduce it here, offer it only with the last patch?
next prev parent reply other threads:[~2018-07-02 15:41 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-29 21:11 [PATCH v6 00/21] s390: vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 01/21] s390/zcrypt: Add ZAPQ inline function Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 02/21] s390/zcrypt: Review inline assembler constraints Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 03/21] s390/zcrypt: Show load of cards and queues in sysfs Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 04/21] s390/zcrypt: Integrate ap_asm.h into include/asm/ap.h Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 05/21] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-07-02 14:38 ` Christian Borntraeger
2018-07-02 15:37 ` Tony Krowiak
2018-07-02 15:41 ` Cornelia Huck [this message]
2018-07-02 15:54 ` Tony Krowiak
2018-07-02 16:11 ` Cornelia Huck
2018-07-02 16:20 ` Halil Pasic
2018-07-02 16:28 ` Cornelia Huck
2018-07-03 14:44 ` Tony Krowiak
2018-07-02 16:04 ` Halil Pasic
2018-07-02 15:56 ` Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 06/21] KVM: s390: refactor crypto initialization Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 07/21] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-07-02 13:53 ` Halil Pasic
2018-07-02 15:39 ` Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 08/21] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-07-09 14:17 ` Pierre Morel
2018-07-10 7:03 ` Harald Freudenberger
2018-07-12 7:32 ` Tony Krowiak
2018-07-09 15:44 ` Pierre Morel
2018-06-29 21:11 ` [PATCH v6 09/21] s390: vfio-ap: structure for storing mdev matrix Tony Krowiak
2018-07-06 14:26 ` Halil Pasic
2018-07-12 14:34 ` Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 10/21] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-07-09 12:11 ` Pierre Morel
2018-07-13 12:20 ` Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 11/21] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-07-09 12:13 ` Pierre Morel
2018-06-29 21:11 ` [PATCH v6 12/21] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 13/21] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-07-09 12:20 ` Pierre Morel
2018-07-09 14:38 ` Pierre Morel
2018-07-13 12:24 ` Tony Krowiak
2018-07-13 16:38 ` Halil Pasic
2018-06-29 21:11 ` [PATCH v6 14/21] s390: vfio-ap: implement mediated device open callback Tony Krowiak
2018-07-12 12:47 ` Halil Pasic
2018-07-12 16:03 ` Tony Krowiak
2018-07-13 10:48 ` Halil Pasic
2018-06-29 21:11 ` [PATCH v6 15/21] s390: vfio-ap: configure the guest's AP matrix Tony Krowiak
2018-07-11 23:22 ` Halil Pasic
2018-07-12 14:36 ` Tony Krowiak
2018-07-12 13:28 ` Halil Pasic
2018-07-12 14:37 ` Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 16/21] s390: vfio-ap: sysfs interface to view guest matrix Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 17/21] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 18/21] s390: vfio-ap: zeroize the AP queues Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 19/21] s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 20/21] KVM: s390: Handling of Cypto control block in VSIE Tony Krowiak
2018-06-29 21:11 ` [PATCH v6 21/21] s390: doc: detailed specifications for AP virtualization Tony Krowiak
2018-07-02 16:28 ` Halil Pasic
2018-07-03 7:46 ` Harald Freudenberger
2018-07-03 9:22 ` Halil Pasic
2018-07-03 11:52 ` Cornelia Huck
2018-07-03 12:20 ` Halil Pasic
2018-07-03 13:25 ` Cornelia Huck
2018-07-03 13:58 ` Halil Pasic
2018-07-03 14:30 ` Cornelia Huck
2018-07-03 15:25 ` Tony Krowiak
2018-07-03 16:14 ` Halil Pasic
2018-07-03 15:20 ` Tony Krowiak
2018-07-03 15:17 ` Tony Krowiak
2018-07-03 15:00 ` Tony Krowiak
2018-07-03 14:56 ` Tony Krowiak
2018-07-04 8:31 ` Harald Freudenberger
2018-07-02 23:10 ` Halil Pasic
2018-07-03 16:36 ` Tony Krowiak
2018-07-04 16:31 ` Boris Fiuczynski
2018-07-05 13:29 ` Tony Krowiak
2018-07-09 9:21 ` Pierre Morel
2018-07-09 15:50 ` Halil Pasic
2018-07-10 8:49 ` Pierre Morel
2018-07-12 7:26 ` Tony Krowiak
2018-07-03 8:10 ` Harald Freudenberger
2018-07-09 9:02 ` Pierre Morel
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