On 09/05/2012 06:28 PM, Michael S. Tsirkin wrote:
>> gsi 3 is configured as edge in the ioapic. It has (unusually) two
>> inputs: one driven by userspace, the other by irqfd.
>>
>> cpu 0cpu 1
>> -
>> irqfd: set to 1
>> ioapic:
On Wed, Sep 05, 2012 at 06:22:57PM +0300, Avi Kivity wrote:
> On 09/05/2012 06:13 PM, Michael S. Tsirkin wrote:
> > On Wed, Sep 05, 2012 at 05:59:46PM +0300, Avi Kivity wrote:
> >> On 09/05/2012 05:51 PM, Michael S. Tsirkin wrote:
> >> > On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
>
On 09/05/2012 06:13 PM, Michael S. Tsirkin wrote:
> On Wed, Sep 05, 2012 at 05:59:46PM +0300, Avi Kivity wrote:
>> On 09/05/2012 05:51 PM, Michael S. Tsirkin wrote:
>> > On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
>> >> On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
>> >> >>
>>
On 09/05/2012 06:07 PM, Michael S. Tsirkin wrote:
> On Wed, Sep 05, 2012 at 05:46:17PM +0300, Avi Kivity wrote:
>> On 08/21/2012 10:29 PM, Alex Williamson wrote:
>> > KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
>> > which is also shared with userspace injection methods like
>>
On Wed, Sep 05, 2012 at 06:12:04PM +0300, Avi Kivity wrote:
> On 09/05/2012 06:09 PM, Michael S. Tsirkin wrote:
> > On Wed, Sep 05, 2012 at 05:51:53PM +0300, Michael S. Tsirkin wrote:
> >> On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
> >> > On 08/22/2012 03:41 AM, Michael S. Tsirkin
On Wed, Sep 05, 2012 at 05:59:46PM +0300, Avi Kivity wrote:
> On 09/05/2012 05:51 PM, Michael S. Tsirkin wrote:
> > On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
> >> On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
> >> >>
> >> >> I assumed you were pointing out the level vs edge i
On 09/05/2012 06:09 PM, Michael S. Tsirkin wrote:
> On Wed, Sep 05, 2012 at 05:51:53PM +0300, Michael S. Tsirkin wrote:
>> On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
>> > On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
>> > >>
>> > >> I assumed you were pointing out the level vs
On Wed, Sep 05, 2012 at 05:51:53PM +0300, Michael S. Tsirkin wrote:
> On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
> > On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
> > >>
> > >> I assumed you were pointing out the level vs edge interaction. If we
> > >> call that a userspace b
On Wed, Sep 05, 2012 at 05:46:17PM +0300, Avi Kivity wrote:
> On 08/21/2012 10:29 PM, Alex Williamson wrote:
> > KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
> > which is also shared with userspace injection methods like
> > KVM_IRQ_LINE. This can cause a conflict if an irqfd
On 09/05/2012 05:51 PM, Michael S. Tsirkin wrote:
> On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
>> On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
>> >>
>> >> I assumed you were pointing out the level vs edge interaction. If we
>> >> call that a userspace bug, I can just drop th
On Wed, Sep 05, 2012 at 05:35:43PM +0300, Avi Kivity wrote:
> On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
> >>
> >> I assumed you were pointing out the level vs edge interaction. If we
> >> call that a userspace bug, I can just drop this. Thanks,
> >>
> >> Alex
> >
> > level is userspace
On 08/21/2012 10:29 PM, Alex Williamson wrote:
> KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
> which is also shared with userspace injection methods like
> KVM_IRQ_LINE. This can cause a conflict if an irqfd triggers on
> a GSI asserted through KVM_IRQ_LINE. Move irqfd to it
On 08/22/2012 03:41 AM, Michael S. Tsirkin wrote:
>>
>> I assumed you were pointing out the level vs edge interaction. If we
>> call that a userspace bug, I can just drop this. Thanks,
>>
>> Alex
>
> level is userspace bug I think :)
I don't see how it's a bug. Suppose we have a vfio device
On Wed, 2012-08-22 at 03:41 +0300, Michael S. Tsirkin wrote:
> On Tue, Aug 21, 2012 at 03:14:54PM -0600, Alex Williamson wrote:
> > On Tue, 2012-08-21 at 23:41 +0300, Michael S. Tsirkin wrote:
> > > On Tue, Aug 21, 2012 at 02:06:19PM -0600, Alex Williamson wrote:
> > > > On Tue, 2012-08-21 at 22:58
On Tue, Aug 21, 2012 at 03:14:54PM -0600, Alex Williamson wrote:
> On Tue, 2012-08-21 at 23:41 +0300, Michael S. Tsirkin wrote:
> > On Tue, Aug 21, 2012 at 02:06:19PM -0600, Alex Williamson wrote:
> > > On Tue, 2012-08-21 at 22:58 +0300, Michael S. Tsirkin wrote:
> > > > On Tue, Aug 21, 2012 at 01:
On Tue, 2012-08-21 at 23:41 +0300, Michael S. Tsirkin wrote:
> On Tue, Aug 21, 2012 at 02:06:19PM -0600, Alex Williamson wrote:
> > On Tue, 2012-08-21 at 22:58 +0300, Michael S. Tsirkin wrote:
> > > On Tue, Aug 21, 2012 at 01:29:06PM -0600, Alex Williamson wrote:
> > > > KVM_IRQFD currently uses th
On Tue, Aug 21, 2012 at 02:06:19PM -0600, Alex Williamson wrote:
> On Tue, 2012-08-21 at 22:58 +0300, Michael S. Tsirkin wrote:
> > On Tue, Aug 21, 2012 at 01:29:06PM -0600, Alex Williamson wrote:
> > > KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
> > > which is also shared wit
On Tue, 2012-08-21 at 22:58 +0300, Michael S. Tsirkin wrote:
> On Tue, Aug 21, 2012 at 01:29:06PM -0600, Alex Williamson wrote:
> > KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
> > which is also shared with userspace injection methods like
> > KVM_IRQ_LINE. This can cause a co
On Tue, Aug 21, 2012 at 01:29:06PM -0600, Alex Williamson wrote:
> KVM_IRQFD currently uses the reserved KVM_USERSPACE_IRQ_SOURCE_ID
> which is also shared with userspace injection methods like
> KVM_IRQ_LINE. This can cause a conflict if an irqfd triggers on
> a GSI asserted through KVM_IRQ_LINE.
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