HI,
I am using kvm-kmod with version 2.6.36, but I encountered a fatal problem.
In linux run on KVM,I using request(irq,*,*,*) function to request a
interrupt line. However, When I using a irq bigger than 15, it will
return error.
Now I have simulated a PCI device and decide to using IOAPIC to sen
On 06/21/2011 12:03 PM, Gleb Natapov wrote:> >>
> >Something like steal time, but for watchdog. But this become complicated
fast.
> >Watchdog emulation will have to move into kernel for starter.
>
> Why? You can use a performance counter from userspace.
>
Heh, haven't thought about such way
On Tue, Jun 21, 2011 at 11:56:26AM +0300, Avi Kivity wrote:
> On 06/21/2011 11:41 AM, Gleb Natapov wrote:
> >On Tue, Jun 21, 2011 at 11:09:21AM +0300, Avi Kivity wrote:
> >> On 06/21/2011 09:02 AM, Gleb Natapov wrote:
> >> >On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote:
> >> >> >T
On 06/21/2011 11:41 AM, Gleb Natapov wrote:
On Tue, Jun 21, 2011 at 11:09:21AM +0300, Avi Kivity wrote:
> On 06/21/2011 09:02 AM, Gleb Natapov wrote:
> >On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote:
> >> >The only two things which came to my mind are:
> >> >
> >> >* N
On Tue, Jun 21, 2011 at 11:09:21AM +0300, Avi Kivity wrote:
> On 06/21/2011 09:02 AM, Gleb Natapov wrote:
> >On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote:
> >> >The only two things which came to my mind are:
> >> >
> >> > * NMI (aka. ipmitool diag) - already available in qemu/kvm
On 06/21/2011 09:02 AM, Gleb Natapov wrote:
On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote:
> >The only two things which came to my mind are:
> >
> > * NMI (aka. ipmitool diag) - already available in qemu/kvm - but requires
> > in-guest kexec/kdump
> > * Hardware-Watchdog
On Mon, Jun 20, 2011 at 08:23:20PM +0300, Avi Kivity wrote:
> On 06/20/2011 08:13 PM, Jan Kiszka wrote:
> >> A watchdog has the advantage that is also detects lockups.
> >>
> >> In fact you could implement the panic device via the existing
> >> watchdogs. Simply program the timer for the minimu
On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote:
> >The only two things which came to my mind are:
> >
> > * NMI (aka. ipmitool diag) - already available in qemu/kvm - but requires
> >in-guest kexec/kdump
> > * Hardware-Watchdog (also available in qemu/libvirt)
>
> A watchdog has
On 2011-06-20 18:34, Avi Kivity wrote:
>> >
>> > Do ILO cards / IPMI support something like this? We could follow
>> their
>> > lead in that case.
>>
>> The only two things which came to my mind are:
>>
>> * NMI (aka. ipmitool diag) - already available in qemu/kvm - but
>> requires
>> in-g
On 06/20/2011 08:13 PM, Jan Kiszka wrote:
> A watchdog has the advantage that is also detects lockups.
>
> In fact you could implement the panic device via the existing
> watchdogs. Simply program the timer for the minimum interval and
> *don't* service the interrupt. This would work for no
On 06/20/2011 07:26 PM, Daniel Gollub wrote:
>
> I agree. But let's do this via a device, this way kvm need not be changed.
Is a device reliable enough if the guest kernel crashes?
Do you mean something like a hardware watchdog?
I'm proposing a 1:1 equivalent. Instead of issuing a hypercall
On Monday, June 20, 2011 05:45:36 pm Avi Kivity wrote:
> > > However, I'm not sure I see the gain. Most enterprisey guests
> > > already contain in-guest crash dumpers which provide more
> > > information than a qemu memory dump could, since they know exact
> > > load addresses etc. and are in
On 2011-06-20 17:45, Avi Kivity wrote:
>> This series does need to introduce a QMP event notification upon
>> crash, so that the crash notification can be propagated to mgmt
>> layers above QEMU.
>
> Yes.
I think the best way to deal with that is to stop the VM on guest panic.
There is already WI
On 06/20/2011 06:38 PM, Daniel P. Berrange wrote:
On Mon, Jun 20, 2011 at 06:31:23PM +0300, Avi Kivity wrote:
> On 06/20/2011 04:38 PM, Daniel Gollub wrote:
> >Introduce panic hypercall to enable the crashing guest to notify the
> >host. This enables the host to run some actions as soon a gues
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