; CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Acked-by: Eric B Munson
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rt the kernel part but not the
> hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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o people who wants to backport the kernel
> part but not the hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Teste
tra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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t; CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; would wrongly think that all cpus have the same ability to run processes,
> lowering the overall throughput.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munso
Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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rt the kernel part but not the
> hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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Description: Digital signature
o people who wants to backport the kernel
> part but not the hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Teste
tra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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t; CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; would wrongly think that all cpus have the same ability to run processes,
> lowering the overall throughput.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munso
Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
My mail provider seems to have dropped patch 1 of the series so I can't reply
directly to it, please add my Tested-by there as well.
Tested-by: Eric
rt the kernel part but not the
> hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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o people who wants to backport the kernel
> part but not the hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested
iel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
> CC: Marcelo Tosatti
Tested-by: Eric B Munson
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> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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t; CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; would wrongly think that all cpus have the same ability to run processes,
> lowering the overall throughput.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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On Thu, 30 Jun 2011, Avi Kivity wrote:
> On 06/30/2011 12:56 AM, Eric B Munson wrote:
> >My mail provider seems to have dropped patch 1 of the series so I can't reply
> >directly to it, please add my Tested-by there as well.
>
> How did you test it then?
>
I buil
On Thu, 30 Jun 2011, Glauber Costa wrote:
> On 06/30/2011 09:59 AM, Eric B Munson wrote:
> >On Thu, 30 Jun 2011, Avi Kivity wrote:
> >
> >>On 06/30/2011 12:56 AM, Eric B Munson wrote:
> >>>My mail provider seems to have dropped patch 1 of the series so I c
rt the kernel part but not the
> hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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; CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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itzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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e code to be easily bypassed when not
> in use.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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Costa
> CC: Isaku Yamahata
> CC: Eddie Dong
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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uber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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steal_time_rq. This is because otherwise, information about time
> accounted in update_process_tick() would never reach us in update_rq_clock().
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Ant
d to survive cpu offlining/onlining.
>
> Signed-off-by: Glauber Costa
> CC: Rik van Riel
> CC: Jeremy Fitzhardinge
> CC: Peter Zijlstra
> CC: Avi Kivity
> CC: Anthony Liguori
> CC: Eric B Munson
Tested-by: Eric B Munson
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: Glauber Costa
Tested-by: Eric B Munson
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cleared and the soft
lockup message is skipped.
This currently breaks the build for non-x86 architectures but part of what I am
looking for here is how to go about adding the function stubs for everything
else.
Eric B Munson (3):
Add flag to indicate that a vm was stopped by the host
Add
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected.
Signed-off-by: Eric B Munson
---
arch/x86/include/asm/pvclock-abi.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/pvclock-abi.h
b/arch/x86/include
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
---
arch/x86/include/asm/pvclock.h |3 +++
arch/x86/kernel/kvmclock.c | 12
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so.
Signed-off-by: Eric B Munson
---
kernel/watchdog.c | 11 +++
1 files changed, 11 insertions(+), 0 deletions
On 2012-08-03 14:57, Marcelo Tosatti wrote:
kvm_guest_time_update unconditionally clears hv_clock.flags field,
so the notification never reaches the guest.
Fix it by allowing PVCLOCK_GUEST_STOPPED to passthrough.
Signed-off-by: Marcelo Tosatti
Reviewed-by: Eric B Munson
--
To unsubscribe
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
-off-by: Eric B Munson
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: a...@redhat.com
Cc: kvm@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
---
target-i386/kvm.c |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/target-i386/kvm.c b
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi...@citrix.com
Cc: kvm@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker
om
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi...@citrix.com
Cc: kvm@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (5):
Add flag to indicate that a vm was stopped by the host
Add functions to check if the
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc
On Thu, 01 Dec 2011, Jan Kiszka wrote:
> On 2011-11-29 22:36, Eric B Munson wrote:
> > Often when a guest is stopped from the qemu console, it will report spurious
> > soft lockup warnings on resume. There are kernel patches being discussed
> > that
> > will give t
On Thu, 01 Dec 2011, Jan Kiszka wrote:
> On 2011-11-29 22:36, Eric B Munson wrote:
> > Often when a guest is stopped from the qemu console, it will report spurious
> > soft lockup warnings on resume. There are kernel patches being discussed
> > that
> > will give t
patch uses the qemu
Notifier system to tell the guest it is about to be stopped.
Signed-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: linux-ker...@vger.kernel.org
Cc: kvm@vger.kernel.org
---
target-i386/kvm.c |1
On Thu, 01 Dec 2011, Marcelo Tosatti wrote:
> On Thu, Dec 01, 2011 at 06:36:17PM +0100, Jan Kiszka wrote:
> > On 2011-12-01 18:22, Eric B Munson wrote:
> > > On Thu, 01 Dec 2011, Jan Kiszka wrote:
> > >
> > >> On 2011-11-29 22:36, Eric B Munson wrote:
>
-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: kvm@vger.kernel.org
---
Changes from V2:
Move ioctl into hw/kvmclock.c so as other arches can use it as it is
implemented
Changes from V1:
Remove unnecessary
On Fri, 02 Dec 2011, Jan Kiszka wrote:
> On 2011-12-02 20:19, Eric B Munson wrote:
> > Often when a guest is stopped from the qemu console, it will report spurious
> > soft lockup warnings on resume. There are kernel patches being discussed
> > that
> > will give t
On Sat, 03 Dec 2011, Jan Kiszka wrote:
> On 2011-12-02 22:27, Eric B Munson wrote:
> > On Fri, 02 Dec 2011, Jan Kiszka wrote:
> >
> >> On 2011-12-02 20:19, Eric B Munson wrote:
> >>> Often when a guest is stopped from the qemu console, it will report
> >
On Sat, 03 Dec 2011, Sasha Levin wrote:
> On Tue, 2011-11-29 at 16:35 -0500, Eric B Munson wrote:
> >
> > Now that we have a flag that will tell the guest it was suspended,
> > create an interface for that communication using a KVM ioctl.
> >
> > Signed-off-b
patch uses the qemu
Notifier system to tell the guest it is about to be stopped.
Signed-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: kvm@vger.kernel.org
---
Changes from V3:
Collapse new state change notification
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc
nux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (5):
Add flag to indicate that a vm was stopped by the host
Add functions to check if the host has stopped the vm
Add ioctl for KVMCLOCK_GUEST_STOPPED
Add generic stubs for kvm stop check functions
Add chec
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi...@citrix.com
Cc: levinsasha...@gmail.com
Cc: Jan Kiszka
Cc: kvm@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc
On Wed, 07 Dec 2011, Avi Kivity wrote:
> On 12/05/2011 10:18 PM, Eric B Munson wrote:
> > Changes from V4:
> > Rename KVM_GUEST_PAUSED to KVMCLOCK_GUEST_PAUSED
> > Add description of KVMCLOCK_GUEST_PAUSED ioctl to api.txt
> >
> > Changes from V3:
> > Incl
On Wed, 07 Dec 2011, Avi Kivity wrote:
> On 12/05/2011 10:19 PM, Eric B Munson wrote:
> > When a host stops or suspends a VM it will set a flag to show this. The
> > watchdog will use these functions to determine if a softlockup is real, or
> > the
> > result of a su
On Wed, 07 Dec 2011, Avi Kivity wrote:
> On 12/05/2011 10:19 PM, Eric B Munson wrote:
> > Now that we have a flag that will tell the guest it was suspended, create an
> > interface for that communication using a KVM ioctl.
> >
> > @@ -3295,6 +3295,10 @@ long kvm_arch_v
On Wed, 07 Dec 2011, Avi Kivity wrote:
> On 12/05/2011 10:19 PM, Eric B Munson wrote:
> >
> > diff --git a/include/asm-generic/kvm_para.h b/include/asm-generic/kvm_para.h
> > new file mode 100644
> > index 000..177e1eb
> > --- /dev/null
> > +++ b/inc
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc
rg
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (4):
Add flag to indicate that a vm was stopped by the host
Add functions to check if the host has stopped the vm
Add ioctl for KVMCLOCK_GUEST_STOPPED
Add check for suspended vm in softl
On Wed, 14 Dec 2011, Avi Kivity wrote:
> On 12/14/2011 02:16 PM, Marcelo Tosatti wrote:
> > > Having this controlled from userspace means it doesn't work for SIGSTOP
> > > or for long scheduling delays. What about doing this automatically
> > > based on preempt notifiers?
> >
> > Long scheduling
On Wed, 14 Dec 2011, Avi Kivity wrote:
> On 12/14/2011 02:11 PM, Marcelo Tosatti wrote:
> > On Thu, Dec 08, 2011 at 10:23:10AM -0500, Eric B Munson wrote:
> > > On Wed, 07 Dec 2011, Avi Kivity wrote:
> > >
> > > > On 12/05/2011 10:19 PM, Eric B Munso
On Wed, 14 Dec 2011, Avi Kivity wrote:
> On 12/14/2011 07:11 PM, Eric B Munson wrote:
> > > > >
> > > > > If I understand (please correct me if this is wrong) because this is
> > > > > only
> > > > > called from the watchdo
On Wed, 14 Dec 2011, Avi Kivity wrote:
> On 12/08/2011 05:19 PM, Eric B Munson wrote:
> > > error compiling committee.c: too many arguments to function
> > >
> > My concern for preempt notifiers is masking real soft lockup warnings. If
> > the
> > flag is
On Thu, 15 Dec 2011, Avi Kivity wrote:
> On 12/14/2011 07:58 PM, Eric B Munson wrote:
> > > I don't think you should see a guest softlockup if the host is
> > > overloaded. Nor should you see it due to a long live migration pause,
> > > or STOP/CONT. You sho
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
hardi...@citrix.com
Cc: levinsasha...@gmail.com
Cc: Jan Kiszka
Cc: kvm@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (4):
Add flag to indicate that a vm was stopped by the host
Add functions to check if the host has stopped the vm
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: a...@arndb.de
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
asm-generic changes Acked-by: Arnd Bergmann
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc
Cc: h...@zytor.com
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi...@citrix.com
Cc: levinsasha...@gmail.com
Cc: Jan Kiszka
Cc: kvm@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (4):
Add fl
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
patch uses the qemu
Notifier system to tell the guest it is about to be stopped.
Signed-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: kvm@vger.kernel.org
---
Changes from V4:
Test if the guest paused capability is
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Eric B Munson (4):
Add flag to indicate that a vm was stopped by the host
Add functions to check if the host has stopped the vm
Add ioctl for KVMCLOCK_GUEST_STOPPED
Add check for suspended vm in softlockup detector
Documentation/virtua
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
asm-generic changes Acked-by: Arnd Bergmann
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi
patch uses the qemu
Notifier system to tell the guest it is about to be stopped.
Signed-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: kvm@vger.kernel.org
---
Changes from V5:
KVM_GUEST_PAUSED is now a per vm ioctl
patch uses the qemu
Notifier system to tell the guest it is about to be stopped.
Signed-off-by: Eric B Munson
Cc: Avi Kivity
Cc: Marcelo Tosatti
Cc: Jan Kiszka
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: kvm@vger.kernel.org
---
Changes from V6:
Remove unnecessary include
Changes
Now that we have a flag that will tell the guest it was suspended, create an
interface for that communication using a KVM ioctl.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc: ry...@linux.vnet.ibm.com
Cc: aligu...@us.ibm.com
Cc: mtosa...@redhat.com
Cc: jeremy.fitzhardi
When a host stops or suspends a VM it will set a flag to show this. The
watchdog will use these functions to determine if a softlockup is real, or the
result of a suspended VM.
Signed-off-by: Eric B Munson
asm-generic changes Acked-by: Arnd Bergmann
Cc: mi...@redhat.com
Cc: h...@zytor.com
Cc
This flag will be used to check if the vm was stopped by the host when a soft
lockup was detected. The host will set the flag when it stops the guest. On
resume, the guest will check this flag if a soft lockup is detected and skip
issuing the warning.
Signed-off-by: Eric B Munson
Cc: mi
A suspended VM can cause spurious soft lockup warnings. To avoid these, the
watchdog now checks if the kernel knows it was stopped by the host and skips
the warning if so. When the watchdog is reset successfully, clear the guest
paused flag.
Signed-off-by: Eric B Munson
Cc: mi...@redhat.com
Cc
On Tue, 17 Jan 2012, Eric B Munson wrote:
> Changes from V9:
> Use kvm_for_each_vcpu to iterate online vcpu's
>
> Changes from V8:
> Make KVM_GUEST_PAUSED a per vm ioctl instead of per vcpu
>
> Changes from V7:
> Define KVM_CAP_GUEST_PAUSED and support check
&g
On Tue, 17 Jan 2012, Eric B Munson wrote:
> Often when a guest is stopped from the qemu console, it will report spurious
> soft lockup warnings on resume. There are kernel patches being discussed that
> will give the host the ability to tell the guest that it is being stopped and
> s
On Mon, 30 Jan 2012, Avi Kivity wrote:
> On 01/17/2012 08:40 PM, Eric B Munson wrote:
> > Now that we have a flag that will tell the guest it was suspended, create an
> > interface for that communication using a KVM ioctl.
> >
> >
> > diff --git a/Documen
On Mon, 30 Jan 2012, Avi Kivity wrote:
> On 01/30/2012 05:07 PM, Avi Kivity wrote:
> > > +Parameters: None
> > > +Returns: 0 on success, -1 on error
> > > +
> > > +This signals to the host kernel that the specified guest is being paused
> > > by
> > > +userspace. The host will set a flag in the
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