Displaying 20 results from an estimated 188 matches for "shareability".
2015 Dec 17
1
[PATCH] virtio_ring: use smp_store_mb
...semantics of outer-shareable.
I've not been following the thread, but I reckon we could add dma_mb()
(as dmb(osh) on arm), then use that to build dma_load_acquire and
dma_store_release accessors. On arm64, we could probably use the
acquire/release instructions directly, since they inherit the shareability
domain of the address (which has the nice property of being inner-shareable
for coherent devices).
The massive pain with adding new accessors is defining the semantics.
memory-barriers.txt is already lacking for the CPU side, and we're
struggling to express the kind of transitivity guarantees...
2015 Dec 17
1
[PATCH] virtio_ring: use smp_store_mb
...semantics of outer-shareable.
I've not been following the thread, but I reckon we could add dma_mb()
(as dmb(osh) on arm), then use that to build dma_load_acquire and
dma_store_release accessors. On arm64, we could probably use the
acquire/release instructions directly, since they inherit the shareability
domain of the address (which has the nice property of being inner-shareable
for coherent devices).
The massive pain with adding new accessors is defining the semantics.
memory-barriers.txt is already lacking for the CPU side, and we're
struggling to express the kind of transitivity guarantees...
2013 Aug 02
3
Oracle RAC in libvirt+KVM environment
We wan't to setup two Oracle instance and make RAC work on them.
Both VM are setup based on libvirt + KVM, we use a lvm lun which
formated in qcow2 format and set the shareable properties in the disk
driver like this:
<disk type='block' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source
2017 Dec 05
1
[PATCH] lib: libvirt: stop using <shareable/> for appliance disk (RHBZ#1518517)
Commit aa9e0057b19e29f76c9a81f9aebeeb1cb5bf1fdb made the libvirt backend
use <shareable/> for the disk of the appliance, since at that time all
the instances were using the disk directly.
OTOH, commit 3ad44c866042919374e2d840502e53da2ed8aef0 switched to
overlays for read-only disks, including the appliance, so effectively
protecting the appliance.
Because of this, the libvirt backend does
2013 Feb 08
2
[PATCH] xen: arm32: Use system wide TLB flushes, not just inner-shareable
We currently setup page table walks etc as outer-shareable. Given we don''t
really make the distinction between inner- and outer-shareable yet err on
theside of safety.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Cc: Tim Deegan <tim@xen.org>
---
xen/include/asm-arm/flushtlb.h | 4 ++--
1 files
2013 Aug 08
2
Re: Oracle RAC in libvirt+KVM environment
On 08/08/2013 03:54 AM, Timon Wang wrote:
> Anybody have idea on it?
>
> I tried to set the disk as raw format, and retried the setup process,
> but still can't get through.
Caveat: I know nothing in particular about Oracle RAC, but...
Assuming that RAC uses something like SCSI reservations in order to
share the disk, I would guess it doesn't like the disk being on the IDE
2011 May 20
3
Downloading a csv from Dropbox using the shareable link
Hello Kindred R Spirits...
I'm trying to get a file (csv) from Dropbox using their shareable link
concept. They issue a short URL that goes to a web page where you see
a button that says "Download File". They don't really give you the
URL of the file itself, just this page. Is there a way to coax R into
getting such a file? I don't even really want the file per
2015 Dec 17
2
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 03:02:12PM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 03:26:29PM +0200, Michael S. Tsirkin wrote:
> > > Note that virtio_mb() is weirdly inconsistent with virtio_[rw]mb() in
> > > that they use dma_* ops for weak_barriers, while virtio_mb() uses
> > > smp_mb().
> >
> > It's a hack really. I think I'll clean it
2015 Dec 17
2
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 03:02:12PM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 03:26:29PM +0200, Michael S. Tsirkin wrote:
> > > Note that virtio_mb() is weirdly inconsistent with virtio_[rw]mb() in
> > > that they use dma_* ops for weak_barriers, while virtio_mb() uses
> > > smp_mb().
> >
> > It's a hack really. I think I'll clean it
2015 Apr 08
2
[PATCH] virtio_ring: Update weak barriers to use dma_wmb/rmb
On 04/08/2015 01:42 AM, Michael S. Tsirkin wrote:
> On Tue, Apr 07, 2015 at 05:47:42PM -0700, Alexander Duyck wrote:
>> This change makes it so that instead of using smp_wmb/rmb which varies
>> depending on the kernel configuration we can can use dma_wmb/rmb which for
>> most architectures should be equal to or slightly more strict than
>> smp_wmb/rmb.
>>
>>
2015 Apr 08
2
[PATCH] virtio_ring: Update weak barriers to use dma_wmb/rmb
On 04/08/2015 01:42 AM, Michael S. Tsirkin wrote:
> On Tue, Apr 07, 2015 at 05:47:42PM -0700, Alexander Duyck wrote:
>> This change makes it so that instead of using smp_wmb/rmb which varies
>> depending on the kernel configuration we can can use dma_wmb/rmb which for
>> most architectures should be equal to or slightly more strict than
>> smp_wmb/rmb.
>>
>>
2007 Jun 27
2
Controller specs not shareable?
Hi
I just wondered if there was a reason why Rails controller specs are
not shareable? eg
describe "All XHR POSTs to /gap/calculate_quote", :shared => true do
controller_name :gap
# ...
end
describe "XHR POST /gap/calculate_quote with valid details" do
it_should_behave_like "All XHR POSTs to /gap/calculate_quote"
# ...
end
blows up with
2013 Aug 08
0
Re: Oracle RAC in libvirt+KVM environment
Anybody have idea on it?
I tried to set the disk as raw format, and retried the setup process,
but still can't get through.
On Fri, Aug 2, 2013 at 1:58 PM, Timon Wang <timonwst@gmail.com> wrote:
> We wan't to setup two Oracle instance and make RAC work on them.
> Both VM are setup based on libvirt + KVM, we use a lvm lun which
> formated in qcow2 format and set the
2013 Aug 10
0
Re: Oracle RAC in libvirt+KVM environment
I have tryied change the disk bus to SCSI, add a SCSI controller whose
model is virtio-scsi, still can't setup the RAC instance.
I tried to use windows 2008 Failover Cluster feature to setup a a
Failover Cluster instead, and I can't find any cluster disk to share
between two nodes. So when Failover Cluster is setup, I can't add any
Cluster disk to the Failover Cluster.
Have I missed
2018 Feb 06
5
[PATCH v3 1/2] drm/virtio: Add window server support
Hi,
> > Hmm? I'm assuming the wayland client (in the guest) talks to the
> > wayland proxy, using the wayland protocol, like it would talk to a
> > wayland display server. Buffers must be passed from client to
> > server/proxy somehow, probably using fd passing, so where is the
> > problem?
> >
> > Or did I misunderstand the role of the proxy?
>
2018 Feb 06
5
[PATCH v3 1/2] drm/virtio: Add window server support
Hi,
> > Hmm? I'm assuming the wayland client (in the guest) talks to the
> > wayland proxy, using the wayland protocol, like it would talk to a
> > wayland display server. Buffers must be passed from client to
> > server/proxy somehow, probably using fd passing, so where is the
> > problem?
> >
> > Or did I misunderstand the role of the proxy?
>
2011 Apr 23
1
KVM, virsh attach-disk problems
Greetings, list!
I hope you forgive cross-posting - I only now found this list.
I am in the process of configuring a KVM stack of about 8 vms. Mostly I
am concerned about performance, as there will be a lot of I/O.
My last problem is this: I try to add a fresh, unformatted disk
partition to a KVM guest. I follow the directions given here:
2013 Aug 20
1
Re: Stop the relabeling of CD images
----- Original Message -----
> From: Martin Kletzander <mkletzan@redhat.com>
> To: Cristian Ciupitu <cristian.ciupitu@yahoo.com>
> Cc: Eric Blake <eblake@redhat.com>; libvirt-users <libvirt-users@redhat.com>
> Sent: Tuesday, August 20, 2013 6:05 PM
> Subject: Re: [libvirt-users] Stop the relabeling of CD images
>
> On 08/20/2013 04:19 AM, Cristian
2013 Sep 04
2
Error Attaching Seventh VirtIO-SCSI Device to Guest
I have run into a problem attempting to attach the seventh virtio-scsi device to a RHEL 6.4 Guest from a RHEL 6.4 host running libvirt version 0.10.2-18.
I have a guest that is running RHEL6.4 where I can attach disks sda(boot), sdb, sdc, sdd, sde and sdf but when I try to attach sdg the virsh attach-disk command fails with the error:
error: Failed to attach disk
error: internal error Unable to
2012 Feb 13
0
[PATCH 10/14] arm: implement ARMv7 tlb ops.
arm: implement ARMv7 tlb ops.
xen/arch/arm/xen/Makefile | 1 +
xen/arch/arm/xen/cache-v7.S | 17 +++++------------
xen/arch/arm/xen/domain_build.c | 6 +++---
xen/arch/arm/xen/tlb-v7.S | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 60 insertions(+), 15 deletions(-)
Signed-off-by: Jaemin Ryu <jm77.ryu@samsung.com>
diff -r c6a412adfae7