Hi Philippe,

On Thu, Jan 13, 2022 at 10:24 AM Philippe Mathieu-Daudé <f4bug@amsat.org>
wrote:

> Hi Bernhard,
>
> On 12/1/22 22:36, Bernhard Beschow wrote:
> > Hi,
> >
> > first-time contributor here. Inspired by an article in LWN [1] I figured
> I'd
> > get my hands dirty with QEMU development. According to the article my
> goal is
> > to eliminate some "accidental complexity".
> >
> > While studying the code I noticed some (accidental?) differences between
> piix3
> > and piix4 where the PCI interrupts are handled. Moreover, I noticed
> presence of
> > global variables in piix4 which probably constitute a limitation of
> QOM's idea
> > of configuration-driven machine creation. By applying piix3 concepts,
> i.e.
> > moving the interrupt handling from gt64xxx to piix4, it's possible to
> both
> > eliminate the differences and resolve the global variables.
> >
> > The patch series is structured as follows: Patch 1 eliminates the
> differences,
> > patch 3 resolves the global variables. Patch 2 is a preparation for
> patch 3.
> > Some of my further comments regarding the patches are:
> >
> > Patch 1:
> > * pci_slot_get_pirq() looks quite malta-specific. Neither gt64xxx nor
> piix4
> >    seem to be the perfect fit. So I moved it to piix4, analogous to
> piix3.
> > * The i8259 property moved from MaltaState to PIIX4State looks quite
> redundant
> >    to the isa property. Could isa be used instead, eliminating i8259?
> >
> > Patch 2:
> > * Besides piix4, there were four further cases where the PIC array was
> passed
> >    as the opaque parameter to the pci_map_irq_fn's. AFAICS in all other
> cases
> >    the DeviceState is passed instead. With this patch, consistency is
> >    esablished.
> > * Passing PIIX4State to piix4_set_irq() paves the way for eliminating all
> >    global variables left in piix4.c (see patch 3).
> >
> > Comments welcome.
> >
> > Cheers
> > Bernhard
> >
> > [1] https://lwn.net/Articles/872321/
> >
> > Bernhard Beschow (3):
> >    malta: Move PCI interrupt handling from gt64xxx to piix4
> >    pci: Always pass own DeviceState to pci_map_irq_fn's
> >    isa/piix4: Resolve global variables
>
> Did you forget to sent the patches?
>

I can see my patches in-reply-to my cover letter here [1]. Do I miss
something?

[1]  https://lists.nongnu.org/archive/html/qemu-devel/2022-01/msg02786.html