From: Wei Liu <wei.liu2@citrix.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Wei Liu <wei.liu2@citrix.com>, Andy Lutomirski <luto@kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Cornelia Huck <cornelia.huck@de.ibm.com>,
"Joerg Roedel" <jroedel@suse.de>, KVM <kvm@vger.kernel.org>,
linux-s390 <linux-s390@vger.kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Sebastian Ott <sebott@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@lst.de>,
"Christian Borntraeger" <borntraeger@de.ibm.com>,
David Vrabel <david.vrabel@citrix.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
<sparclinux@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
"Linux Virtualization"
<virtualization@lists.linux-foundation.org>,
David Woodhouse <dwmw2@infradead.org>,
"David S. Miller" <davem@davemloft.net>,
"Martin Schwidefsky" <schwidefsky@de.ibm.com>
Subject: Re: [Xen-devel] [PATCH v5 00/10] virtio DMA API, yet again
Date: Mon, 1 Feb 2016 21:22:57 +0000 [thread overview]
Message-ID: <20160201212257.GA9803@citrix.com> (raw)
In-Reply-To: <CALCETrU4tJ0pta96tvmuUYB_hKF8_2+bYOZ-qrFTytyXfDchXQ@mail.gmail.com>
On Mon, Feb 01, 2016 at 10:04:07AM -0800, Andy Lutomirski wrote:
> On Mon, Feb 1, 2016 at 3:00 AM, Wei Liu <wei.liu2@citrix.com> wrote:
> > Nice work, Andy.
> >
> > On Thu, Jan 28, 2016 at 06:31:13PM -0800, Andy Lutomirski wrote:
> >> This switches virtio to use the DMA API on Xen and if requested by
> >> module option.
> >>
> >> This fixes virtio on Xen, and it should break anything because it's
> >> off by default on everything except Xen PV on x86.
> >>
> >
> > What is your setup? My understanding is that virtio doesn't work on PV
> > guest as of now because a suitable transport is missing.
>
> I cheated and ran Xen under KVM with the virtio-pci device provided by
> QEMU. If you have virtme
> (https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/), you can
> do:
>
Thanks for the clarification. This is exactly what I needed to know. In
that case virtio-pci transport is used. All virtio devices are exposed
as PCI devices.
Wei.
> virtme-run --kdir=. --pwd --xen xen-4.5.2 --qemu-opts -smp 3 -m 1024
>
> where xen-4.5.2 is the gunzipped Xen binary. (Other versions work, too.)
>
> --Andy
WARNING: multiple messages have this Message-ID (diff)
From: Wei Liu <wei.liu2@citrix.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
sparclinux@vger.kernel.org, Joerg Roedel <jroedel@suse.de>,
Wei Liu <wei.liu2@citrix.com>, KVM <kvm@vger.kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Sebastian Ott <sebott@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux Virtualization <virtualization@lists.linux-foundation.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
David Vrabel <david.vrabel@citrix.com>,
Andy Lutomirski <luto@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
David Woodhouse <dwmw2@infradead.org>,
Christoph Hellwig <hch@lst.de>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [Xen-devel] [PATCH v5 00/10] virtio DMA API, yet again
Date: Mon, 1 Feb 2016 21:22:57 +0000 [thread overview]
Message-ID: <20160201212257.GA9803@citrix.com> (raw)
In-Reply-To: <CALCETrU4tJ0pta96tvmuUYB_hKF8_2+bYOZ-qrFTytyXfDchXQ@mail.gmail.com>
On Mon, Feb 01, 2016 at 10:04:07AM -0800, Andy Lutomirski wrote:
> On Mon, Feb 1, 2016 at 3:00 AM, Wei Liu <wei.liu2@citrix.com> wrote:
> > Nice work, Andy.
> >
> > On Thu, Jan 28, 2016 at 06:31:13PM -0800, Andy Lutomirski wrote:
> >> This switches virtio to use the DMA API on Xen and if requested by
> >> module option.
> >>
> >> This fixes virtio on Xen, and it should break anything because it's
> >> off by default on everything except Xen PV on x86.
> >>
> >
> > What is your setup? My understanding is that virtio doesn't work on PV
> > guest as of now because a suitable transport is missing.
>
> I cheated and ran Xen under KVM with the virtio-pci device provided by
> QEMU. If you have virtme
> (https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/), you can
> do:
>
Thanks for the clarification. This is exactly what I needed to know. In
that case virtio-pci transport is used. All virtio devices are exposed
as PCI devices.
Wei.
> virtme-run --kdir=. --pwd --xen xen-4.5.2 --qemu-opts -smp 3 -m 1024
>
> where xen-4.5.2 is the gunzipped Xen binary. (Other versions work, too.)
>
> --Andy
WARNING: multiple messages have this Message-ID (diff)
From: Wei Liu <wei.liu2@citrix.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
sparclinux@vger.kernel.org, Joerg Roedel <jroedel@suse.de>,
Wei Liu <wei.liu2@citrix.com>, KVM <kvm@vger.kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Sebastian Ott <sebott@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux Virtualization <virtualization@lists.linux-foundation.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
David Vrabel <david.vrabel@citrix.com>,
Andy Lutomirski <luto@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
David Woodhouse <dwmw2@infradead.org>,
Christoph Hellwig <hch@lst.de>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [Xen-devel] [PATCH v5 00/10] virtio DMA API, yet again
Date: Mon, 01 Feb 2016 21:22:57 +0000 [thread overview]
Message-ID: <20160201212257.GA9803@citrix.com> (raw)
In-Reply-To: <CALCETrU4tJ0pta96tvmuUYB_hKF8_2+bYOZ-qrFTytyXfDchXQ@mail.gmail.com>
On Mon, Feb 01, 2016 at 10:04:07AM -0800, Andy Lutomirski wrote:
> On Mon, Feb 1, 2016 at 3:00 AM, Wei Liu <wei.liu2@citrix.com> wrote:
> > Nice work, Andy.
> >
> > On Thu, Jan 28, 2016 at 06:31:13PM -0800, Andy Lutomirski wrote:
> >> This switches virtio to use the DMA API on Xen and if requested by
> >> module option.
> >>
> >> This fixes virtio on Xen, and it should break anything because it's
> >> off by default on everything except Xen PV on x86.
> >>
> >
> > What is your setup? My understanding is that virtio doesn't work on PV
> > guest as of now because a suitable transport is missing.
>
> I cheated and ran Xen under KVM with the virtio-pci device provided by
> QEMU. If you have virtme
> (https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/), you can
> do:
>
Thanks for the clarification. This is exactly what I needed to know. In
that case virtio-pci transport is used. All virtio devices are exposed
as PCI devices.
Wei.
> virtme-run --kdir=. --pwd --xen xen-4.5.2 --qemu-opts -smp 3 -m 1024
>
> where xen-4.5.2 is the gunzipped Xen binary. (Other versions work, too.)
>
> --Andy
next prev parent reply other threads:[~2016-02-01 21:24 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-29 2:31 [PATCH v5 00/10] virtio DMA API, yet again Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 01/10] dma: Provide simple noop dma ops Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 02/10] alpha/dma: use common " Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 03/10] s390/dma: Allow per device " Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 04/10] vring: Introduce vring_use_dma_api() Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-02-01 11:22 ` David Woodhouse
2016-02-01 11:22 ` David Woodhouse
2016-02-01 11:22 ` David Woodhouse
2016-02-01 11:22 ` David Woodhouse
2016-02-01 13:23 ` Michael S. Tsirkin
2016-02-01 13:23 ` Michael S. Tsirkin
2016-02-01 13:23 ` Michael S. Tsirkin
2016-02-01 15:39 ` Andy Lutomirski
2016-02-01 15:39 ` Andy Lutomirski
2016-02-01 15:39 ` Andy Lutomirski
2016-02-01 16:11 ` David Woodhouse
2016-02-01 16:11 ` David Woodhouse
2016-02-01 16:11 ` David Woodhouse
2016-02-01 15:39 ` Andy Lutomirski
2016-02-01 13:23 ` Michael S. Tsirkin
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 05/10] virtio_ring: Support DMA APIs Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 06/10] virtio: Add improved queue allocation API Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 07/10] virtio_mmio: Use the DMA API if enabled Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 08/10] virtio_pci: " Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 09/10] vring: Use the DMA API on Xen Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 10:34 ` [Xen-devel] " David Vrabel
2016-01-29 10:34 ` David Vrabel
2016-01-29 10:34 ` David Vrabel
2016-01-31 20:09 ` Michael S. Tsirkin
2016-01-31 20:09 ` Michael S. Tsirkin
2016-01-31 20:09 ` Michael S. Tsirkin
2016-01-31 20:13 ` Andy Lutomirski
2016-01-31 20:13 ` Andy Lutomirski
2016-01-31 20:13 ` Andy Lutomirski
2016-01-31 20:18 ` Michael S. Tsirkin
2016-01-31 20:18 ` [Xen-devel] " Michael S. Tsirkin
2016-01-31 20:18 ` Michael S. Tsirkin
2016-01-31 20:18 ` Michael S. Tsirkin
2016-01-31 20:27 ` Andy Lutomirski
2016-01-31 20:27 ` Andy Lutomirski
2016-01-31 20:27 ` Andy Lutomirski
2016-01-31 20:27 ` Andy Lutomirski
2016-01-31 20:13 ` Andy Lutomirski
2016-02-01 21:24 ` [Xen-devel] " Wei Liu
2016-02-01 21:24 ` Wei Liu
2016-02-01 21:24 ` Wei Liu
2016-02-01 21:24 ` Wei Liu
2016-01-31 20:09 ` Michael S. Tsirkin
2016-01-29 10:34 ` David Vrabel
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` [PATCH v5 10/10] vring: Add a module parameter to force-enable the DMA API Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 2:31 ` Andy Lutomirski
2016-01-29 11:01 ` [PATCH v5 00/10] virtio DMA API, yet again David Woodhouse
2016-01-29 11:01 ` David Woodhouse
2016-01-29 11:01 ` David Woodhouse
2016-01-31 19:06 ` Christoph Hellwig
2016-01-31 19:06 ` Christoph Hellwig
2016-01-31 19:06 ` Christoph Hellwig
2016-01-31 19:06 ` Christoph Hellwig
2016-01-31 20:12 ` Michael S. Tsirkin
2016-01-31 20:12 ` Michael S. Tsirkin
2016-01-31 20:12 ` Michael S. Tsirkin
2016-01-31 20:12 ` Michael S. Tsirkin
2016-01-31 20:16 ` Andy Lutomirski
2016-01-31 20:16 ` Andy Lutomirski
2016-01-31 20:16 ` Andy Lutomirski
2016-01-31 20:16 ` Andy Lutomirski
2016-02-01 11:00 ` [Xen-devel] " Wei Liu
2016-02-01 11:00 ` Wei Liu
2016-02-01 11:00 ` Wei Liu
2016-02-01 18:04 ` Andy Lutomirski
2016-02-01 18:04 ` [Xen-devel] " Andy Lutomirski
2016-02-01 18:04 ` Andy Lutomirski
2016-02-01 18:04 ` Andy Lutomirski
2016-02-01 21:22 ` Wei Liu [this message]
2016-02-01 21:22 ` Wei Liu
2016-02-01 21:22 ` Wei Liu
2016-02-01 21:22 ` Wei Liu
2016-02-01 11:00 ` Wei Liu
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