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Re: [PATCH v4 00/11] QOM'ify PIIX southbridge creation


From: Mark Cave-Ayland
Subject: Re: [PATCH v4 00/11] QOM'ify PIIX southbridge creation
Date: Mon, 6 Jun 2022 11:38:39 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0

On 03/06/2022 19:50, Bernhard Beschow wrote:

v4:
* Rebase onto 
https://patchew.org/QEMU/20220530112718.26582-1-philippe.mathieu.daude@gmail.com/
* Cosmetics (fix typo, omit "include") (Mark, Philippe)
* Split piix3 and piix4 (Philippe)
* s/Found-by/Reported-by/ (Philippe)
* Don't alias smbus (Mark)

v3:
* Rebase onto 'hw/acpi/piix4: remove legacy piix4_pm_init() function' (Mark) [1]
* Use embedded structs for touched PCI devices (Mark)
* Fix piix4's rtc embedded struct to be initialized by
   object_initialize_child() (Peter) [2]

Testing done:

1)
`make check-avocado` for --target-list=x86_64-softmmu,mips-softmmu
Result: All pass.

2)
* `qemu-system-x86_64 -M pc -m 2G -cdrom archlinux-2022.05.01-x86_64.iso`
* `qemu-system-mipsel -M malta -kernel vmlinux-3.2.0-4-4kc-malta -hda
   debian_wheezy_mipsel_standard.qcow2 -append "root=/dev/sda1 console=tty0"`

In both cases the system booted successfully and it was possible to shut down
the system using the `poweroff` command.

v2:
* Preserve `DeviceState *` as return value of piix4_create() (Mark)
* Aggregate all type name movements into first commit (Mark)
* Have piix4 southbridge rather than malta board instantiate piix4 pm (me)

Testing done:

1)
`make check-avocado` for --target-list=x86_64-softmmu,mips-softmmu
Result: All pass.

2)
Modify pci_piix3_realize() to start with
     error_setg(errp, "This is a test");
Then start `qemu-system-x86_64 -M pc -m 1G -accel kvm -cpu host -cdrom
archlinux-2022.05.01-x86_64.iso`.
Result: qemu-system-x86_64 aborts with: "This is a test"

v1:
The piix3 and piix4 southbridge devices still rely on create() functions which
are deprecated. This series resolves these functions piece by piece to
modernize the code.

Both devices are modified in lockstep where possible to provide more context.

Testing done:
* `qemu-system-x86_64 -M pc -m 2G -cdrom archlinux-2022.05.01-x86_64.iso`
* `qemu-system-mipsel -M malta -kernel vmlinux-3.2.0-4-4kc-malta -hda
   debian_wheezy_mipsel_standard.qcow2 -append "root=/dev/sda1 console=tty0"`

In both cases the system booted successfully and it was possible to shut down
the system using the `poweroff` command.

[1] https://lists.gnu.org/archive/html/qemu-devel/2022-05/msg05686.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2022-02/msg01128.html

Bernhard Beschow (11):
   hw/southbridge/piix: Aggregate all PIIX southbridge type names
   hw/isa/piix4: Use object_initialize_child() for embedded struct
   hw/isa/piix4: Move pci_map_irq_fn' near pci_set_irq_fn
   hw/isa/piix4: QOM'ify PCI device creation and wiring
   hw/isa/piix4: Factor out ISABus retrieval from piix4_create()
   hw/isa/piix4: QOM'ify PIIX4 PM creation
   hw/isa/piix4: Inline and remove piix4_create()
   hw/isa/piix3: Move pci_map_irq_fn near pci_set_irq_fn
   hw/isa/piix3: QOM'ify PCI device creation and wiring
   hw/isa/piix3: Factor out ISABus retrieval from piix3_create()
   hw/isa/piix3: Inline and remove piix3_create()

  hw/i386/pc_piix.c             |   7 +-
  hw/isa/piix3.c                |  98 +++++++++++++++-------------
  hw/isa/piix4.c                | 119 +++++++++++++++++-----------------
  hw/mips/malta.c               |   9 ++-
  include/hw/isa/isa.h          |   2 -
  include/hw/southbridge/piix.h |   6 +-
  6 files changed, 128 insertions(+), 113 deletions(-)

I've had quick look over this and it seems fine to me, so for the entire series:

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


ATB,

Mark.



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