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From: Cornelia Huck <cohuck@redhat.com>
To: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
Cc: 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, borntraeger@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,
	frankja@linux.ibm.com, Tony Krowiak <akrowiak@linux.ibm.com>
Subject: Re: [PATCH v8 00/22] vfio-ap: guest dedicated crypto adapters
Date: Wed, 8 Aug 2018 18:25:13 +0200
Message-ID: <20180808182513.557b09cb.cohuck@redhat.com> (raw)
In-Reply-To: <1533739472-7172-1-git-send-email-akrowiak@linux.vnet.ibm.com>

On Wed,  8 Aug 2018 10:44:10 -0400
Tony Krowiak <akrowiak@linux.vnet.ibm.com> wrote:

> From: Tony Krowiak <akrowiak@linux.ibm.com>
> 
> Several major objections were raised to design changes introduced in the v7
> patch series, so in order to avoid an extended discussion around these 
> objections and to expedite acceptance of the series, the following changes
> have been made for v8:
> 
> 1. Removed the AP bus's ability to designate queues as 'used by host' or as 
>    'used by alternate driver(s)'. The bind/unbind sysfs interfaces will be
>    used for managing the connection of AP queue devices to a zcrypt driver
>    or the VFIO AP driver.

I don't think the idea of pools is bad per se; I mainly did not like
the sysfs interface and the dynamic interactions.

We can probably reintroduce something like that later on, if it is
still useful.

> 
> 2. Removed the 'activate' sysfs interfaces which allowed for over 
>    provisioning of the mediated device as well as creation of mdevs with
>    overlapping matrixes. It was pointed out that both of these enhancements
>    break the mdev model. Consistency checking of the mdev matrix has
>    therefore been returned to the mediated matrix device's sysfs interfaces
>    for assigning adapters and domains:
> 
>    * Verify that APQNs assigned to the mediated device are bound to the 
>      VFIO AP device driver
> 
>    * Verify that no APQN assigned to the mediated matrix device is assigned
>      to any other mediated matrix device.

Ok, that makes sense.

Where's point 3? :)

> 
> 4. Reworked the handling of the CRYCB in vSIE based upon patches introduced
>    by David in the mainline.

I had reviewed David's patches and they looked good to me.

> 
> Notes:
> =====
> 
> Patches 1-4 (by Harald) posted with this series are forthcoming via
> Martins tree and are based on changes in the ap driver/bus that we use as a
> foundation. They have been included here because some of the functions
> in this patch series are dependent upon them.

I don't remember anything contentious in these.

> 
> Patches 5-6 (by David) are posted with this series because they are not
> currently in our master branch. Patches 19 and 20 of this series are
> dependent upon them. I believe David's patches are available in the 
> mainline now.

I don't see them queued yet, but as said, they looked fine to me.

> 
> This patch series works with the v6 QEMU patches. There is no new QEMU
> patchset version yet because there have been no review comments worthy of
> creating a new series; only a couple of extremely minor nits.

Once the kernel part is merged, I'd need a respin anyway due to the
kernel headers updates.

  parent reply index

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-08 14:44 Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 01/22] s390/zcrypt: Add ZAPQ inline function Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 02/22] s390/zcrypt: Review inline assembler constraints Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 03/22] s390/zcrypt: Show load of cards and queues in sysfs Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 04/22] s390/zcrypt: Integrate ap_asm.h into include/asm/ap.h Tony Krowiak
2018-08-09  9:06   ` Cornelia Huck
2018-08-09  9:17     ` Harald Freudenberger
2018-08-09 13:45       ` Harald Freudenberger
2018-08-09 16:06       ` Tony Krowiak
2018-08-10  8:49         ` Cornelia Huck
2018-08-10  9:37           ` Harald Freudenberger
2018-08-10 15:53             ` Tony Krowiak
2018-08-10 15:50           ` Tony Krowiak
2018-08-09 15:18     ` Tony Krowiak
2018-08-09 15:43       ` Heiko Carstens
2018-08-09 16:55         ` Tony Krowiak
2018-08-13  9:24     ` Harald Freudenberger
2018-08-13  9:34       ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 05/22] KVM: s390: vsie: simulate VCPU SIE entry/exit Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 06/22] KVM: s390: introduce and use KVM_REQ_VSIE_RESTART Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 07/22] KVM: s390: refactor crypto initialization Tony Krowiak
2018-08-09  5:58   ` Janosch Frank
2018-08-10 16:13     ` Tony Krowiak
2018-08-09  8:25   ` David Hildenbrand
2018-08-09 19:54     ` Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 08/22] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-08-09 10:12   ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 09/22] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-08-09 11:06   ` Cornelia Huck
2018-08-09 16:27     ` Pierre Morel
2018-08-10  8:59       ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 10/22] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 11/22] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 12/22] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 13/22] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 14/22] KVM: s390: interfaces to clear CRYCB masks Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 15/22] s390: vfio-ap: implement mediated device open callback Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 16/22] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 17/22] s390: vfio-ap: zeroize the AP queues Tony Krowiak
2018-08-10  9:14   ` Cornelia Huck
2018-08-10 10:49     ` Pierre Morel
2018-08-10 11:16       ` Cornelia Huck
2018-08-10 16:24         ` Tony Krowiak
2018-08-13  6:57           ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 18/22] s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 19/22] KVM: s390: Clear Crypto Control Block when using vSIE Tony Krowiak
2018-08-09  8:10   ` David Hildenbrand
2018-08-09  8:50     ` Pierre Morel
2018-08-09  8:57     ` Pierre Morel
2018-08-08 14:44 ` [PATCH v8 20/22] KVM: s390: Handling of Cypto control block in VSIE Tony Krowiak
2018-08-09  6:20   ` Janosch Frank
2018-08-09  7:33     ` Pierre Morel
2018-08-08 14:44 ` [PATCH v8 21/22] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-08-09  8:17   ` David Hildenbrand
2018-08-09  8:34     ` Harald Freudenberger
2018-08-09 20:27     ` Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 22/22] s390: doc: detailed specifications " Tony Krowiak
2018-08-08 15:06 ` [PATCH v8 00/22] vfio-ap: guest dedicated crypto adapters Janosch Frank
2018-08-08 16:25 ` Cornelia Huck [this message]
2018-08-08 22:52   ` Tony Krowiak

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