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Re: [PATCH v2 3/7] hw/acpi/Kconfig: Do not needlessly build TYPE_PIIX4_P


From: Bernhard Beschow
Subject: Re: [PATCH v2 3/7] hw/acpi/Kconfig: Do not needlessly build TYPE_PIIX4_PM in non-PC/Malta machines
Date: Fri, 16 Dec 2022 15:10:00 +0000


Am 16. Dezember 2022 14:44:33 UTC schrieb BALATON Zoltan <balaton@eik.bme.hu>:
>On Fri, 16 Dec 2022, Bernhard Beschow wrote:
>> TYPE_PIIX4_PM is only used in machines where PIIX chipsets are used
>> which is currently PC and Malta. There is no point building it for the
>> other ACPI_X86 machines.
>> 
>> Note that this also removes unneeded ACPI_PIIX4 from PEGASOS2.
>> 
>> Signed-off-by: Bernhard Beschow <shentey@gmail.com>
>
>Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
>
>Isn't 440fx using PIIX3 whereas Malta uses PIIX4?

Correct.

> If so there may be still some inconsistency in the naming of this config 
> option (should it be ACPI_PIIX maybe?)

I440fx does indeed use the PIIX4 PM controller, often referred to as a 
"Frankenstein" device here on the list. That's why I'm currently consolidating 
the PIIX south bridges -- to make PIIX4 bridge usable in i440fx machine.

Best regards,
Bernhard

> but it should not be needed for pegasos2 in any case.
>
>Regards,
>BALATON Zoltan
>
>> ---
>> hw/acpi/Kconfig | 1 -
>> hw/i386/Kconfig | 1 +
>> 2 files changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
>> index 704cbc6236..b7006e18c8 100644
>> --- a/hw/acpi/Kconfig
>> +++ b/hw/acpi/Kconfig
>> @@ -9,7 +9,6 @@ config ACPI_X86
>>     select ACPI_CPU_HOTPLUG
>>     select ACPI_MEMORY_HOTPLUG
>>     select ACPI_HMAT
>> -    select ACPI_PIIX4
>>     select ACPI_PCIHP
>>     select ACPI_ERST
>> 
>> diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
>> index d22ac4a4b9..3a92566701 100644
>> --- a/hw/i386/Kconfig
>> +++ b/hw/i386/Kconfig
>> @@ -69,6 +69,7 @@ config I440FX
>>     imply E1000_PCI
>>     imply VMPORT
>>     imply VMMOUSE
>> +    select ACPI_PIIX4
>>     select PC_PCI
>>     select PC_ACPI
>>     select ACPI_SMBUS
>> 



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