Sridhar,
The idea is simple, just to pin the guest VM user space and then
let host NIC driver has the chance to directly DMA to it.
The patches are based on vhost-net backend driver. We add a device
which provides proto_ops as sendmsg/recvmsg to vhost-net to
send/recv directly to/from the
From: Xin Xiaohui xiaohui@intel.com
The patch let host NIC driver to receive user space skb,
then the driver has chance to directly DMA to guest user
space buffers thru single ethX interface.
We want it to be more generic as a zero copy framework.
Signed-off-by: Xin Xiaohui
On Tue, Apr 06, 2010 at 01:41:37PM +0800, Xin, Xiaohui wrote:
Michael,
For the DOS issue, I'm not sure how much the limit get_user_pages()
can pin is reasonable, should we compute the bindwidth to make it?
There's a ulimit for locked memory. Can we use this, decreasing
the value for
On Tue, Apr 06, 2010 at 01:46:56PM +0800, Xin, Xiaohui wrote:
Michael,
For the write logging, do you have a function in hand that we can
recompute the log? If that, I think I can use it to recompute the
log info when the logging is suddenly enabled.
For the outstanding requests, do you
Avi Kivity wrote:
On 02/18/2010 06:13 PM, Jan Kiszka wrote:
Instead of saving the old INT 0x13 and 0x19 handlers in ROM which fails
under QEMU as it enforces protection, keep them in spare vectors of the
interrupt table, namely INT 0x80 and 0x81.
Applied both, thanks.
Forgot to tag
On Tue, Apr 06, 2010 at 01:11:23PM +0900, Yoshiaki Tamura wrote:
Hi.
When handle_io() is called, rip is currently proceeded *before* actually
having
I/O handled by qemu in userland. Upon implementing Kemari for
KVM(http://www.mail-archive.com/kvm@vger.kernel.org/msg25141.html) mainly in
Hi,
running kernel 2.6.32 (kvm 0.12.3) in host
and 2.6.30 in guest (using Gentoo) works fine.
Now I've upgraded several guests to 2.6.32 too
and have had no problems so far. But with one
guest after 2-3 hours the guest hangs and I
always get a message like this:
[ 1392.030904] rpciod/0: page
kvm_mmu_page.oos_link is not used, so remove it
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/include/asm/kvm_host.h |2 --
arch/x86/kvm/mmu.c |1 -
2 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h
After is_rsvd_bits_set() checks, EFER.NXE must be enabled if NX bit is seted
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/paging_tmpl.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
Am Tue, 06 Apr 2010 14:15:10 +0200 schrieb kvm:
Hi,
running kernel 2.6.32 (kvm 0.12.3) in host and 2.6.30 in guest (using
Gentoo) works fine. Now I've upgraded several guests to 2.6.32 too and
have had no problems so far. But with one guest after 2-3 hours the
guest hangs and I always get
Thanks! I'll try a new kernel. Interestingly two guests with 2.6.32-r3
(Gentoo naming not rc3) with much more NFS traffic don't show
this behavior of 2.6.32-r5. So I'll try 2.6.32-r8. I've found
some threads with NFS and kernel 2.6.32.x related problems
which seems to be fixed in later versions.
Hi,
I am interested in the Shared memory transport between guest(s) and
host project for GSoC 2010. The description of the project is pretty
straightforward, but I am a little bit lost on some parts:
1- Is there any documentation available on KVM shared memory
transport. This'd definitely help
Chris Wright wrote:
Please send in any agenda items you are interested in covering.
Management stack discussion (again :))
Alex
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at
Management stack again
- qemud?
- external mgmt stack, qemu/kvm devs less inclined to care
- Oh, you're using virsh, try #virt on OFTC
- standard libvirt issues
- concern about speed of adopting kvm features
- complicated, XML hard to understand
- being slowed by hv agnositc
- ...
-
On 04/05/2010 08:35 PM, Sridhar Samudrala wrote:
On Sun, 2010-04-04 at 14:14 +0300, Michael S. Tsirkin wrote:
On Fri, Apr 02, 2010 at 10:31:20AM -0700, Sridhar Samudrala wrote:
Make vhost scalable by creating a separate vhost thread per vhost
device. This provides better scaling
On Tue, Apr 06, 2010 at 12:38:00AM +0300, Avi Kivity wrote:
On 04/05/2010 09:44 PM, Marcelo Tosatti wrote:
On Thu, Mar 25, 2010 at 05:02:56PM +0200, Avi Kivity wrote:
Log emulated instructions in ftrace, especially if they failed.
Why not log all emulated instructions? Seems useful to me.
On Sun, Apr 04, 2010 at 07:30:20PM +0300, Avi Kivity wrote:
On 04/04/2010 02:46 PM, Michael S. Tsirkin wrote:
On Wed, Mar 24, 2010 at 02:38:57PM +0200, Avi Kivity wrote:
On 03/17/2010 03:04 PM, Michael S. Tsirkin wrote:
This is port of vhost v6 patch set I posted previously to qemu-kvm, for
This patch adds support for the Mergeable Receive Buffers feature to
vhost_net.
+-DLS
Changes from previous revision:
1) renamed:
vhost_discard_vq_desc - vhost_discard_desc
vhost_get_heads - vhost_get_desc_n
On 05/04/10 09:27, Avi Kivity wrote:
On 04/03/2010 12:07 AM, Richard Simpson wrote:
Nope, both Kernels are 64 bit.
uname -a Host: Linux gordon 2.6.27-gentoo-r8 #5 Sat Mar 14 18:01:59 GMT
2009 x86_64 AMD Athlon(tm) 64 Processor 3200+ AuthenticAMD GNU/Linux
uname -a Guest: Linux andrew
Fix some typos found on the utility function that runs
autotest tests on a guest.
Signed-off-by: Lucas Meneghel Rodrigues l...@redhat.com
---
client/tests/kvm/kvm_test_utils.py |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/client/tests/kvm/kvm_test_utils.py
Hi All,
Here is the latest version of vhost-blk implementation.
Major difference from my previous implementation is that, I
now merge all contiguous requests (both read and write), before
submitting them. This significantly improved IO performance.
I am still collecting performance numbers, I
On Tue, 06 Apr 2010 09:35:09 +0800
Gui Jianfeng guijianf...@cn.fujitsu.com wrote:
Hi all,
I'm not sure whether it's appropriate to post the problem here.
I played with virsh under Fedora 12, and started a KVM fedora12 guest
by virsh start command. The fedora12 guest is successfully started.
Michael,
For the write logging, do you have a function in hand that we can
recompute the log? If that, I think I can use it to recompute the
log info when the logging is suddenly enabled.
For the outstanding requests, do you mean all the user buffers have
submitted before the logging
As part of the performance testing effort for KVM,
introduce a base performance testset for the
sample KVM control file. It will execute several
benchmarks on a Fedora 12 guest, bringing back the
results to the host. This base testset can be tweaked
for folks interested on getting figures from a
The Buildbot has detected a new failure of disable_kvm_x86_64_debian_5_0 on
qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/disable_kvm_x86_64_debian_5_0/builds/336
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build:
The Buildbot has detected a new failure of disable_kvm_i386_debian_5_0 on
qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/disable_kvm_i386_debian_5_0/builds/337
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build:
The Buildbot has detected a new failure of disable_kvm_i386_out_of_tree on
qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/disable_kvm_i386_out_of_tree/builds/285
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build:
The Buildbot has detected a new failure of disable_kvm_x86_64_out_of_tree on
qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/disable_kvm_x86_64_out_of_tree/builds/285
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build:
Michael,
Qemu needs a userspace write, is that a synchronous one or
asynchronous one?
It's a synchronous non-blocking write.
Sorry, why the Qemu live migration needs the device have a userspace write?
how does the write operation work? And why a read operation is not cared here?
Thanks
On 04/07/2010 01:31 AM, Richard Simpson wrote:
2.6.27 should be plenty fine for nx. Really the important bit is that
the host kernel has nx enabled. Can you check if that is so?
Umm, could you give me a clue about how to do that. It is some time
since I configured the host kernel,
On 03/31/2010 06:18 PM, Chris Wright wrote:
Hrm, I'm not sure these would be related to the small BAR region patch.
It looks more like a timing issue.
small BAR == slow path == timing issue?
Would be interesting to verify using perf with the 'kvm:kvm_mmio'
software event, see how
On 04/01/2010 10:35 PM, Wenhao Xu wrote:
Does current qemu-kvm (qemu v0.12.3) use the irqchip, pit of KVM? I
cannot find any KVM_CREATE_IRQCHIP and KVM_CREATE_PIT in the qemu
code.
Are you looking at qemu or qemu-kvm?
Concerning the interface between qemu and kvm, I have the following
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