https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #9 from prochazka 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 work
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).
N
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 de
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 (hypo
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 Kiszka wrote:
>> On 2011-01-19 20:32, Blue Swirl wrote:
>>> On Wed, Jan 19, 2011 at 4:57 PM, Anthony Liguori
>>>wrote:
On 01/19/2011 07:15 AM, Markus Armbruster wr
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 p
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #10 from Marcelo Tosatti 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 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 interested in it
https://bugzilla.kernel.org/show_bug.cgi?id=27052
Avi Kivity changed:
What|Removed |Added
CC||a...@redhat.com
--- Comment #11 from Avi
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #12 from Marcelo Tosatti 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 spte N shadows with g
On Mon, 24 Jan 2011 16:06:34 -0600
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
> - glib everywhere
- Let's start planning our next release in advance, here's
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 wrote:
> On Mon, 24 Jan 2011 16:06:34 -0600
> 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
> >
Luiz Capitulino a écrit :
> On Mon, 24 Jan 2011 16:06:34 -0600
> 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
>> - glib everywhere
>
> - Let's start planning
On Tue, Jan 25, 2011 at 2:02 PM, Luiz Capitulino 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 see an in-place QCOW2
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.
--
error
On 01/25/2011 08:11 AM, Aurelien Jarno wrote:
Luiz Capitulino a écrit :
On Mon, 24 Jan 2011 16:06:34 -0600
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 blo
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 i
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 here ]
kernel BUG at arch/x86/kvm/mmu.c:695!
Fix
On Tue, Jan 25, 2011 at 2:26 PM, Avi Kivity 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 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 l
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 ag
Hi Marcello,
On Fri, Jan 21, 2011 at 14:22, Marcelo Tosatti 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:
>>
>> 2011-01-20T12:41:18.358603+01:00 phy005 k
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 o
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 re
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 instead of the end. Only x86 seems to
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 devic
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(
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 lo
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.
> >
> >Ho
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 wrote:
> >>
> >>> On 01/24/2011 07:25 AM, Chris Wright wrote:
> Please send in any agenda items
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
s
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
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 b/arch/x86/k
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #13 from Marcelo Tosatti 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 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.
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
> >-
https://bugzilla.kernel.org/show_bug.cgi?id=27052
--- Comment #15 from prochazka 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 memo
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 PM
On 01/25/2011 04:44 PM, Ruben Kerkhof wrote:
Hi Marcello,
On Fri, Jan 21, 2011 at 14:22, Marcelo Tosatti 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 mean
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
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 t
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
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 s
Hi Avi,
On Tue, Jan 25, 2011 at 18:39, Avi Kivity wrote:
> On 01/25/2011 04:44 PM, Ruben Kerkhof wrote:
>>
>> Hi Marcello,
>>
>> On Fri, Jan 21, 2011 at 14:22, Marcelo Tosatti
>> wrote:
>> > On Thu, Jan 20, 2011 at 12:48:00PM +0100, Ruben Kerkhof wrote:
>> >> I'm suddenly getting lots of the f
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
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
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 update_rq_clo
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_
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 accou
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 cp
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 QEMU
2011/1/25 Prasad Joshi :
> 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 v
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