https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #9 from prochazka prochazka.nico...@gmail.com 2011-01-25
08:49:48 ---
seems to be closed,
but our tests are not exhaustive
Regards,
NP.
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On 01/24/2011 11:32 AM, Marcelo Tosatti wrote:
On Fri, Jan 21, 2011 at 04:48:02PM -0700, Alex Williamson wrote:
When doing device assignment, we use cpu_register_physical_memory() to
directly map the qemu mmap of the device resource into the address
space of the guest. The unadvertised
On 01/25/2011 07:37 AM, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how we might be
able to allocate slots on demand. Thanks,
Here's a first cut just to see if this looks agreeable. This allows the
slot array to grow on demand. This works
On 01/18/2011 04:28 PM, Jan Kiszka wrote:
So we can either infect the whole device tree with kvm (or maybe a
more generic accelerator structure that also deals with Xen) or we need
to pull the reference inside the device's init function from some global
service (kvm_get_state).
Note
On 01/18/2011 05:50 PM, Anthony Liguori wrote:
This design is in conflict with the requirement to attach KVM-assisted
devices also to their home bus, e.g. an assigned PCI device to the PCI
bus. We don't support multi-homed qdev devices.
The bus topology reflects how I/O flows in and out of a
On 01/19/2011 06:57 PM, Anthony Liguori wrote:
On 01/19/2011 07:15 AM, Markus Armbruster wrote:
So they interact with KVM (need kvm_state), and they interact with the
emulated PCI bus. Could you elaborate on the fundamental difference
between the two interactions that makes you choose the
On 01/20/2011 11:22 PM, Jan Kiszka wrote:
On 2011-01-20 20:27, Blue Swirl wrote:
On Thu, Jan 20, 2011 at 9:33 AM, Jan Kiszkajan.kis...@siemens.com wrote:
On 2011-01-19 20:32, Blue Swirl wrote:
On Wed, Jan 19, 2011 at 4:57 PM, Anthony Liguori
aligu...@linux.vnet.ibm.com wrote:
On
On 01/19/2011 12:05 PM, ViniCrane L. wrote:
Avi,
Do you have any plan to support AIX guest?
Do you mean on the power architecture? I'm sure Alex would know.
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On 01/19/2011 10:21 AM, Sheng Yang wrote:
We already got an guest MMIO address for that in the exit information.
I've created a chain of handler in qemu to handle it.
But we already decoded the table and entry...
But the handler is still wrapped by vcpu_mmio_write(), as a part of
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #10 from Marcelo Tosatti mtosa...@redhat.com 2011-01-25 13:09:07
---
Nicolas,
It would be good if you can test with hugepages enabled again.
Thanks for the detailed report.
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On 25.01.2011, at 13:41, Avi Kivity a...@redhat.com wrote:
On 01/19/2011 12:05 PM, ViniCrane L. wrote:
Avi,
Do you have any plan to support AIX guest?
Do you mean on the power architecture? I'm sure Alex would know.
I don't have any active intentions to do so, but Andreas was
https://bugzilla.kernel.org/show_bug.cgi?id=27052
Avi Kivity a...@redhat.com changed:
What|Removed |Added
CC||a...@redhat.com
---
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #12 from Marcelo Tosatti mtosa...@redhat.com 2011-01-25 13:55:05
---
It gets inconsistent if mmu_set_spte updates an already present spte with a
different gfn. For example:
- unsync page spte N gfn A
- guest updates gpte that
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguori anth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block layer
- glib everywhere
- Let's start planning our next release in
On 01/25/2011 04:27 AM, Avi Kivity wrote:
It boils down to how we reasonably pass a kvm_state reference from
machine init code to a sysbus device. I'm probably biased, but I don't
see any way that does not work against the idea of confining access to
kvm_state or breaks device instantiation from
If an emulated pte write modifies the gpa of a present spte, sp-gfns is
not updated, retaining a stale value which later leads to:
rmap_remove: 8807d245fff8 0-BUG
[ cut here ]
kernel BUG at arch/x86/kvm/mmu.c:695!
Fix by updating sp-gfns even if spte was present.
On Tue, 25 Jan 2011 11:57:27 -0200
Luiz Capitulino lcapitul...@redhat.com wrote:
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguori anth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
-
Luiz Capitulino a écrit :
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguori anth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block layer
- glib everywhere
- Let's start
On Tue, Jan 25, 2011 at 2:02 PM, Luiz Capitulino lcapitul...@redhat.com wrote:
- Google summer of code 2011 is on, are we interested? (note: I just saw the
news, I don't have any information yet)
http://www.google-melange.com/document/show/gsoc_program/google/gsoc2011/timeline
I'd like to
On 01/25/2011 12:06 AM, Anthony Liguori wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block layer
I have a perpetually in progress branch for this, and would very much
like to see this done.
--
On 01/25/2011 08:11 AM, Aurelien Jarno wrote:
Luiz Capitulino a écrit :
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguorianth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
-
On 01/25/2011 05:06 AM, Avi Kivity wrote:
On 01/19/2011 06:57 PM, Anthony Liguori wrote:
On 01/19/2011 07:15 AM, Markus Armbruster wrote:
So they interact with KVM (need kvm_state), and they interact with the
emulated PCI bus. Could you elaborate on the fundamental difference
between the two
On Tue, Jan 25, 2011 at 2:26 PM, Avi Kivity a...@redhat.com wrote:
On 01/25/2011 12:06 AM, Anthony Liguori wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block layer
I have a perpetually in progress
On Wed, Jan 19, 2011 at 12:01:04PM -0200, Lucas Meneghel Rodrigues wrote:
Hi guys, I've noticed the following regression on qemu.git HEAD:
Please drop use of boot=on for virtio from autotest.
VMCreateError: VM creation command failed:
/root/autotest/client/tests/kvm/qemu
-name 'vm1'
Am 25.01.2011 15:11, schrieb Aurelien Jarno:
Luiz Capitulino a écrit :
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguori anth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block
On Tue, 2011-01-25 at 08:36 +0100, Jan Kiszka wrote:
On 2011-01-25 06:37, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how we might be
able to allocate slots on demand. Thanks,
Here's a first cut just to see if this looks agreeable.
Hi Marcello,
On Fri, Jan 21, 2011 at 14:22, Marcelo Tosatti mtosa...@redhat.com wrote:
On Thu, Jan 20, 2011 at 12:48:00PM +0100, Ruben Kerkhof wrote:
I'm suddenly getting lots of the following errors on a server running
2.36.7, but I have no idea what it means:
On Tue, Jan 25, 2011 at 07:41:32AM -0700, Alex Williamson wrote:
On Tue, 2011-01-25 at 08:36 +0100, Jan Kiszka wrote:
On 2011-01-25 06:37, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how we might be
able to allocate slots on demand.
On Tue, 2011-01-25 at 12:20 +0200, Avi Kivity wrote:
On 01/24/2011 11:32 AM, Marcelo Tosatti wrote:
On Fri, Jan 21, 2011 at 04:48:02PM -0700, Alex Williamson wrote:
When doing device assignment, we use cpu_register_physical_memory() to
directly map the qemu mmap of the device resource
On 01/25/2011 04:45 PM, Michael S. Tsirkin wrote:
Also, is there any time where we need to scan all slots
on data path?
All guest mmio accesses.
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On Tue, Jan 25, 2011 at 12:20:03PM +0200, Avi Kivity wrote:
On 01/24/2011 11:32 AM, Marcelo Tosatti wrote:
On Fri, Jan 21, 2011 at 04:48:02PM -0700, Alex Williamson wrote:
When doing device assignment, we use cpu_register_physical_memory() to
directly map the qemu mmap of the device
On 01/25/2011 04:46 PM, Alex Williamson wrote:
On Tue, 2011-01-25 at 12:20 +0200, Avi Kivity wrote:
On 01/24/2011 11:32 AM, Marcelo Tosatti wrote:
On Fri, Jan 21, 2011 at 04:48:02PM -0700, Alex Williamson wrote:
When doing device assignment, we use cpu_register_physical_memory() to
On Tue, 2011-01-25 at 12:23 +0200, Avi Kivity wrote:
On 01/25/2011 07:37 AM, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how we might be
able to allocate slots on demand. Thanks,
Here's a first cut just to see if this looks
On 01/25/2011 04:55 PM, Michael S. Tsirkin wrote:
We can't make it unbounded in the kernel, since a malicious user
could start creating an infinite amount of memory slots, pinning
unbounded kernel memory.
How about keeping the slots in userspace memory, access them with copy
from user?
On Tue, Jan 25, 2011 at 04:53:44PM +0200, Avi Kivity wrote:
For the other lookups, which we
believe will succeed, we can assume the probablity of a match is
related to the slot size, and sort the slots by page count.
Unlikely to be true for assigned device BARs.
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Hello
We have had several cases where a slave machine freezes, eating all available
cpu. ( this happends randomly, say, after 3 months of correct functionning )
After reboot, looking at the syslog when the freeze occured, the few ( ~5 )
last lines written show a date which has jumped in the
On Tue, Jan 25, 2011 at 04:58:41PM +0200, Avi Kivity wrote:
On 01/25/2011 04:55 PM, Michael S. Tsirkin wrote:
We can't make it unbounded in the kernel, since a malicious user
could start creating an infinite amount of memory slots, pinning
unbounded kernel memory.
How about keeping
On Tue, Jan 25, 2011 at 03:42:04PM +0100, Kevin Wolf wrote:
Am 25.01.2011 15:11, schrieb Aurelien Jarno:
Luiz Capitulino a écrit :
On Mon, 24 Jan 2011 16:06:34 -0600
Anthony Liguori anth...@codemonkey.ws wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda
Hello,
Please find attached my notes from the weekly QEMU/KVM call January 25,
2011. My apologies if I got something wrong.
Jes
- QEMU 0.14/0.15 releases
- Feb 1st 2011 branch to stable tree for 0.14. Anthony would like to
do a formal release quickly, so hopefully within 1-2 weeks after
On 2011-01-25 15:53, Avi Kivity wrote:
On 01/25/2011 04:41 PM, Alex Williamson wrote:
kvm: Allow memory slot array to grow on demand
Remove fixed KVM_MEMORY_SLOTS limit, allowing the slot array
to grow on demand. Private slots are now allocated at the
front
On 01/25/2011 02:26 AM, Jan Kiszka wrote:
Do you see a chance to look closer at the issue yourself? E.g.
instrument the kernel's irqchip models and dump their states once your
guest is stuck?
The device runs on iRQ 3. So I applied this patch here.
diff --git a/arch/x86/kvm/i8259.c
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #13 from Marcelo Tosatti mtosa...@redhat.com 2011-01-25 17:07:58
---
Nicolas,
Can you please back out the first patch and apply this debug one instead?
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https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #14 from Marcelo Tosatti mtosa...@redhat.com 2011-01-25 17:08:42
---
Created an attachment (id=45162)
-- (https://bugzilla.kernel.org/attachment.cgi?id=45162)
debug rmap remove
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On 01/25/2011 04:57 PM, Alex Williamson wrote:
On Tue, 2011-01-25 at 12:23 +0200, Avi Kivity wrote:
On 01/25/2011 07:37 AM, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how we might be
able to allocate slots on demand. Thanks,
On Tue, Jan 25, 2011 at 04:32:29PM +0200, Avi Kivity wrote:
On 01/25/2011 03:07 PM, Marcelo Tosatti wrote:
If an emulated pte write modifies the gpa of a present spte, sp-gfns is
not updated, retaining a stale value which later leads to:
rmap_remove: 8807d245fff8 0-BUG
[ cut
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #15 from prochazka prochazka.nico...@gmail.com 2011-01-25
17:29:00 ---
previous test is with hugepages.
I try to test but i can reproduce only to one server, and this server is not
mine.
Regards,
Nicolas.
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On 01/25/2011 04:59 PM, Michael S. Tsirkin wrote:
On Tue, Jan 25, 2011 at 04:53:44PM +0200, Avi Kivity wrote:
For the other lookups, which we
believe will succeed, we can assume the probablity of a match is
related to the slot size, and sort the slots by page count.
Unlikely to be true
On 01/25/2011 05:23 PM, Michael S. Tsirkin wrote:
On Tue, Jan 25, 2011 at 04:58:41PM +0200, Avi Kivity wrote:
On 01/25/2011 04:55 PM, Michael S. Tsirkin wrote:
We can't make it unbounded in the kernel, since a malicious user
could start creating an infinite amount of memory slots,
On 01/25/2011 07:12 PM, Marcelo Tosatti wrote:
Should be done by a call to kvm_mmu_page_set_gfn(). But I don't
understand how it could become inconsistent in the first place.
if (is_rmap_spte(*sptep)) {
/*
* If we overwrite a PTE page pointer with a 2MB PMD,
On 01/25/2011 04:44 PM, Ruben Kerkhof wrote:
Hi Marcello,
On Fri, Jan 21, 2011 at 14:22, Marcelo Tosattimtosa...@redhat.com wrote:
On Thu, Jan 20, 2011 at 12:48:00PM +0100, Ruben Kerkhof wrote:
I'm suddenly getting lots of the following errors on a server running
2.36.7, but I have no
On Tue, 2011-01-25 at 19:11 +0200, Avi Kivity wrote:
On 01/25/2011 04:57 PM, Alex Williamson wrote:
On Tue, 2011-01-25 at 12:23 +0200, Avi Kivity wrote:
On 01/25/2011 07:37 AM, Alex Williamson wrote:
On Mon, 2011-01-24 at 08:44 -0700, Alex Williamson wrote:
I'll look at how
On Tue, Jan 25, 2011 at 07:33:40PM +0200, Avi Kivity wrote:
On 01/25/2011 04:59 PM, Michael S. Tsirkin wrote:
On Tue, Jan 25, 2011 at 04:53:44PM +0200, Avi Kivity wrote:
For the other lookups, which we
believe will succeed, we can assume the probablity of a match is
related to the slot
On Tue, Jan 25, 2011 at 07:34:18PM +0200, Avi Kivity wrote:
On 01/25/2011 05:23 PM, Michael S. Tsirkin wrote:
On Tue, Jan 25, 2011 at 04:58:41PM +0200, Avi Kivity wrote:
On 01/25/2011 04:55 PM, Michael S. Tsirkin wrote:
We can't make it unbounded in the kernel, since a malicious
On 1/25/2011 9:21 AM, gnafou wrote:
Hello
We have had several cases where a slave machine freezes, eating all available
cpu. ( this happends randomly, say, after 3 months of correct functionning )
After reboot, looking at the syslog when the freeze occured, the few ( ~5 )
last lines written
Hi Avi,
On Tue, Jan 25, 2011 at 18:39, Avi Kivity a...@redhat.com wrote:
On 01/25/2011 04:44 PM, Ruben Kerkhof wrote:
Hi Marcello,
On Fri, Jan 21, 2011 at 14:22, Marcelo Tosattimtosa...@redhat.com
wrote:
On Thu, Jan 20, 2011 at 12:48:00PM +0100, Ruben Kerkhof wrote:
I'm suddenly
On Tue, 2011-01-25 at 17:35 +0100, Jan Kiszka wrote:
On 2011-01-25 15:53, Avi Kivity wrote:
On 01/25/2011 04:41 PM, Alex Williamson wrote:
kvm: Allow memory slot array to grow on demand
Remove fixed KVM_MEMORY_SLOTS limit, allowing the slot array
to grow on
On Mon, 2011-01-24 at 20:51 +0100, Peter Zijlstra wrote:
On Mon, 2011-01-24 at 16:51 -0200, Glauber Costa wrote:
I would really much rather see you change update_rq_clock_task() and
subtract your ns resolution steal time from our wall-time,
update_rq_clock_task() already updates the
On Tue, 2011-01-25 at 18:02 -0200, Glauber Costa wrote:
I fail to see how does clock_task influence cpu power.
If we also have to touch clock_task for better accounting of other
stuff, it is a separate story.
But for cpu_power, I really fail. Please enlighten me.
static void
On Tue, 2011-01-25 at 21:13 +0100, Peter Zijlstra wrote:
On Tue, 2011-01-25 at 18:02 -0200, Glauber Costa wrote:
I fail to see how does clock_task influence cpu power.
If we also have to touch clock_task for better accounting of other
stuff, it is a separate story.
But for cpu_power, I
On Tue, 2011-01-25 at 18:47 -0200, Glauber Costa wrote:
On Tue, 2011-01-25 at 21:13 +0100, Peter Zijlstra wrote:
On Tue, 2011-01-25 at 18:02 -0200, Glauber Costa wrote:
I fail to see how does clock_task influence cpu power.
If we also have to touch clock_task for better accounting of
I am working on a KVM network performance issue found in our lab running
the DayTrader benchmark. The benchmark throughput takes a significant hit
when running the application server in a KVM guest verses on bare metal.
We have dug into the problem and found that DayTrader's use of small
packets
On Tue, 2011-01-25 at 22:07 +0100, Peter Zijlstra wrote:
On Tue, 2011-01-25 at 18:47 -0200, Glauber Costa wrote:
On Tue, 2011-01-25 at 21:13 +0100, Peter Zijlstra wrote:
On Tue, 2011-01-25 at 18:02 -0200, Glauber Costa wrote:
I fail to see how does clock_task influence cpu power.
Hello,
This is to announce that, we have been able to pass-through a ATI
Radeon RV370 FireGL V3100 to Ubuntu VM. This card was attached to a
separate monitor, after passing-through the Keyboard and Mouse
everything worked as normal.
The changes we made are very less, mostly disabling default
2011/1/25 Prasad Joshi prasadjoshi...@gmail.com:
Hello,
This is to announce that, we have been able to pass-through a ATI
Radeon RV370 FireGL V3100 to Ubuntu VM. This card was attached to a
separate monitor, after passing-through the Keyboard and Mouse
everything worked as normal.
The
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