Re: [PATCH v4 0/9] PC cleanups

[Bernhard Beschow]

Am 13. Februar 2023 16:19:55 UTC schrieb Bernhard Beschow <shentey@gmail.com>:
>This series contains some cleanups I came across when working on the PC
>
>machines. It consists of reducing the usage of global variables and eliminating
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>some redundancies.
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>
>
>One notable change is that the SMRAM memory region gets moved from the i440fx
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>and q35 host bridges into the x86 machine. This will simplify cleaning up these
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>host bridges which will be done in a separate series. Note that the movement of
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>the SMRAM memory region apparently doesn't change migration ABI for the pc and
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>q35 machines (see below).
>

Ping

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>
>Testing done:
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>* `make check`
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>' `make check-avocado`
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>* `qemu-system-x86_64 -M q35 -m 2G -cdrom \
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>   manjaro-kde-21.3.2-220704-linux515.iso`
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>* `qemu-system-x86_64 -M pc -m 2G -cdrom 
>manjaro-kde-21.3.2-220704-linux515.iso`
>
>* Confirm that JSON representation of migration files (pc & q35) are empty:
>
>  1. Create four migration files {pc,q35}-{before,after}.mig by running
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>     `qemu-system-x86_64 -M {pc,q35} -S` with QEMU built from master and from
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>     this series.
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>  2. Run `./scripts/analyze-migration.py -d desc -f *.mig > *.json` on the four
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>     files
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>  3. Compare the diffs -> both are empty
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>
>
>v4:
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>* Remove ram_memory variable in pc_q35 completely (Zoltan)
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>
>
>v3:
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>* Add three patches regarding init_pam() and SMRAM.
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>* Drop 'hw/i386/pc_q35: Resolve redundant q35_host variable' since Phil posted
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>  a similar patch in a more comprehensive series:
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>  20230203180914.49112-13-philmd@linaro.org/">https://lore.kernel.org/qemu-devel/20230203180914.49112-13-philmd@linaro.org/
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>* Drop 'hw/isa/lpc_ich9: Reuse memory and io address space of PCI bus' since
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>  it inadvertantly changed the memory hierarchy.
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>* Drop ICH9 cleanups again in favor of a separate series.
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>
>
>v2:
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>* Factor out 'hw/i386/pc_q35: Reuse machine parameter' from 'hw/i386/pc_q35:
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>  Resolve redundant q35_host variable' (Zoltan)
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>* Lower type of phb to Object in 'hw/i386/pc_q35: Resolve redundant q35_host
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>  variable' (Zoltan)
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>* Add ICH9 cleanups
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>
>
>Bernhard Beschow (9):
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>  hw/pci-host/i440fx: Inline sysbus_add_io()
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>  hw/pci-host/q35: Inline sysbus_add_io()
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>  hw/i386/pc_q35: Reuse machine parameter
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>  hw/i386/pc_{q35,piix}: Reuse MachineClass::desc as SMB product name
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>  hw/i386/pc_{q35,piix}: Minimize usage of get_system_memory()
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>  hw/i386/pc: Initialize ram_memory variable directly
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>  hw/pci-host/pam: Make init_pam() usage more readable
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>  hw/i386/x86: Make TYPE_X86_MACHINE the owner of smram
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>  target/i386/tcg/sysemu/tcg-cpu: Avoid own opinion about smram size
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>
>
> include/hw/i386/pc.h             |  1 -
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> include/hw/i386/x86.h            |  2 ++
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> include/hw/pci-host/i440fx.h     |  7 ++++---
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> include/hw/pci-host/pam.h        |  5 +++--
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> include/hw/pci-host/q35.h        |  4 +++-
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> hw/i386/pc.c                     |  2 --
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> hw/i386/pc_piix.c                | 10 +++++-----
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> hw/i386/pc_q35.c                 | 17 +++++++++--------
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> hw/i386/x86.c                    |  4 ++++
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> hw/pci-host/i440fx.c             | 28 +++++++++++++---------------
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> hw/pci-host/pam.c                | 12 ++++++------
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> hw/pci-host/q35.c                | 31 ++++++++++++++++---------------
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> target/i386/tcg/sysemu/tcg-cpu.c |  3 +--
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> 13 files changed, 66 insertions(+), 60 deletions(-)
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>
>
>-- >
>2.39.1
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>
>