On Wed, 2023-01-11 at 12:43 -0700, Alex Williamson wrote:
> On Wed, 11 Jan 2023 19:08:44 +
> David Woodhouse wrote:
>
> > On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote:
> > >
> > > Nice. IIRC, we ended up with the hack solution we have today in vfio
> > > because there was too mu
On Wed, 2023-01-11 at 13:00 -0700, Alex Williamson wrote:
>
> Careful about making too many assumptions around PCI, it's clearly the
> most used but vfio is bus agnostic and we do have vfio-platform support
> as well as some weird s390 devices. There's nothing PCI specific about
> a level trigger
On Wed, 11 Jan 2023 19:50:15 +
David Woodhouse wrote:
> On Wed, 2023-01-11 at 12:43 -0700, Alex Williamson wrote:
> > On Wed, 11 Jan 2023 19:08:44 +
> > David Woodhouse wrote:
> >
> > > On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote:
> > > >
> > > > Nice. IIRC, we ended
On Wed, 2023-01-11 at 12:43 -0700, Alex Williamson wrote:
> On Wed, 11 Jan 2023 19:08:44 +
> David Woodhouse wrote:
>
> > On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote:
> > >
> > > Nice. IIRC, we ended up with the hack solution we have today in vfio
> > > because there was too mu
On Wed, 11 Jan 2023 19:08:44 +
David Woodhouse wrote:
> On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote:
> >
> > Nice. IIRC, we ended up with the hack solution we have today in vfio
> > because there was too much resistance to callbacks that were only
> > necessary for vfio in the
On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote:
>
> Nice. IIRC, we ended up with the hack solution we have today in vfio
> because there was too much resistance to callbacks that were only
> necessary for vfio in the past. Once we had KVM resampling support,
> it simply wasn't worth th
On Wed, 11 Jan 2023 16:58:37 +
David Woodhouse wrote:
> On Wed, 2023-01-11 at 11:25 -0500, Michael S. Tsirkin wrote:
> > On Wed, Jan 11, 2023 at 02:41:58PM +, David Woodhouse wrote:
> > > This allows drivers to register a callback on a qemu_irq, which is
> > > invoked when a level-trigg
On Wed, 2023-01-11 at 11:25 -0500, Michael S. Tsirkin wrote:
> On Wed, Jan 11, 2023 at 02:41:58PM +, David Woodhouse wrote:
> > This allows drivers to register a callback on a qemu_irq, which is
> > invoked when a level-triggered IRQ is acked on the irqchip.
> >
> > This allows us to simulate
On Wed, Jan 11, 2023 at 02:41:58PM +, David Woodhouse wrote:
> This allows drivers to register a callback on a qemu_irq, which is
> invoked when a level-triggered IRQ is acked on the irqchip.
>
> This allows us to simulate level-triggered interrupts more efficiently,
> by resampling the state
This allows drivers to register a callback on a qemu_irq, which is
invoked when a level-triggered IRQ is acked on the irqchip.
This allows us to simulate level-triggered interrupts more efficiently,
by resampling the state of the interrupt only when it actually matters.
This can be used in two wa
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