From: "Michael S. Tsirkin" <mst@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>,
david@redhat.com, qemu-devel@nongnu.org,
Peter Xu <peterx@redhat.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH v3 0/4] Balloon inhibit enhancements, vfio restriction
Date: Thu, 9 Aug 2018 12:20:23 +0300 [thread overview]
Message-ID: <20180809121649-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20180808162304.42d3fecc@t450s.home>
On Wed, Aug 08, 2018 at 04:23:04PM -0600, Alex Williamson wrote:
> So again, I think this comes down to new iommu driver support and new
> iommu apis and new vfio apis to enable some sort of atomic update
> interface,
Oh absolutely. My point is some guest OS can start using atomic updates
at any time since it's something IOMMU hardware supports. Adherence to
a hardware spec would be preferable to adherence to an internal Linux
API. I appreciate it's not an easy task involving host Linux and QEMU
changes.
--
MST
WARNING: multiple messages have this Message-ID (diff)
From: "Michael S. Tsirkin" <mst@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Peter Xu <peterx@redhat.com>,
qemu-devel@nongnu.org, Cornelia Huck <cohuck@redhat.com>,
kvm@vger.kernel.org, david@redhat.com
Subject: Re: [Qemu-devel] [PATCH v3 0/4] Balloon inhibit enhancements, vfio restriction
Date: Thu, 9 Aug 2018 12:20:23 +0300 [thread overview]
Message-ID: <20180809121649-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20180808162304.42d3fecc@t450s.home>
On Wed, Aug 08, 2018 at 04:23:04PM -0600, Alex Williamson wrote:
> So again, I think this comes down to new iommu driver support and new
> iommu apis and new vfio apis to enable some sort of atomic update
> interface,
Oh absolutely. My point is some guest OS can start using atomic updates
at any time since it's something IOMMU hardware supports. Adherence to
a hardware spec would be preferable to adherence to an internal Linux
API. I appreciate it's not an easy task involving host Linux and QEMU
changes.
--
MST
next prev parent reply other threads:[~2018-08-09 9:20 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-07 19:31 [PATCH v3 0/4] Balloon inhibit enhancements, vfio restriction Alex Williamson
2018-08-07 19:31 ` [Qemu-devel] " Alex Williamson
2018-08-07 19:31 ` [PATCH v3 1/4] balloon: Allow multiple inhibit users Alex Williamson
2018-08-07 19:31 ` [Qemu-devel] " Alex Williamson
2018-08-07 19:44 ` Michael S. Tsirkin
2018-08-07 19:44 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-07 20:08 ` Alex Williamson
2018-08-07 20:08 ` [Qemu-devel] " Alex Williamson
2018-08-08 0:07 ` Michael S. Tsirkin
2018-08-08 0:07 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-07 19:31 ` [PATCH v3 2/4] kvm: Use inhibit to prevent ballooning without synchronous mmu Alex Williamson
2018-08-07 19:31 ` [Qemu-devel] " Alex Williamson
2018-08-16 18:15 ` Alex Williamson
2018-08-16 18:15 ` [Qemu-devel] " Alex Williamson
2018-08-17 7:46 ` Paolo Bonzini
2018-08-17 7:46 ` [Qemu-devel] " Paolo Bonzini
2018-08-07 19:31 ` [PATCH v3 3/4] vfio: Inhibit ballooning based on group attachment to a container Alex Williamson
2018-08-07 19:31 ` [Qemu-devel] " Alex Williamson
2018-08-08 3:38 ` Peter Xu
2018-08-08 3:38 ` [Qemu-devel] " Peter Xu
2018-08-07 19:31 ` [PATCH v3 4/4] vfio/ccw/pci: Allow devices to opt-in for ballooning Alex Williamson
2018-08-07 19:31 ` [Qemu-devel] " Alex Williamson
2018-08-07 19:44 ` [PATCH v3 0/4] Balloon inhibit enhancements, vfio restriction Michael S. Tsirkin
2018-08-07 19:44 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-07 19:53 ` Alex Williamson
2018-08-07 19:53 ` [Qemu-devel] " Alex Williamson
2018-08-07 21:58 ` Michael S. Tsirkin
2018-08-07 21:58 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-07 22:40 ` Alex Williamson
2018-08-07 22:40 ` [Qemu-devel] " Alex Williamson
2018-08-08 0:02 ` Michael S. Tsirkin
2018-08-08 0:02 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-08 3:45 ` Peter Xu
2018-08-08 3:45 ` [Qemu-devel] " Peter Xu
2018-08-08 22:23 ` Alex Williamson
2018-08-08 22:23 ` [Qemu-devel] " Alex Williamson
2018-08-09 9:20 ` Michael S. Tsirkin [this message]
2018-08-09 9:20 ` Michael S. Tsirkin
2018-08-09 9:23 ` Michael S. Tsirkin
2018-08-09 9:23 ` [Qemu-devel] " Michael S. Tsirkin
2018-08-09 9:37 ` Peter Xu
2018-08-09 9:37 ` [Qemu-devel] " Peter Xu
2018-08-09 10:13 ` Michael S. Tsirkin
2018-08-09 10:13 ` [Qemu-devel] " Michael S. Tsirkin
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