Re: [RFC PATCH 02/32] ACPI: Move ACPI_HOTPLUG_CPU to be enabled per architecture
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
Date: 2023-08-30 20:19:00
Also in:
kvm, kvmarm, linux-acpi, linux-arch, linux-pm, lkml, loongarch
On Fri, Feb 03, 2023 at 01:50:13PM +0000, James Morse wrote:
quoted hunk ↗ jump to hunk
--- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig@@ -15,6 +15,7 @@ config IA64 select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI + select ACPI_HOTPLUG_CPU if ACPI --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig@@ -5,6 +5,7 @@ config LOONGARCH select ACPI select ACPI_GENERIC_GSI if ACPI select ACPI_MCFG if ACPI + select ACPI_HOTPLUG_CPU if ACPI --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig@@ -59,6 +59,7 @@ config X86 # select ACPI_LEGACY_TABLES_LOOKUP if ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI + select ACPI_HOTPLUG_CPU if ACPI --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig@@ -309,7 +309,6 @@ config ACPI_HOTPLUG_CPU bool depends on ACPI_PROCESSOR && HOTPLUG_CPU select ACPI_CONTAINER - default y
When selecting the symbol, it's a good idea to ensure that its dependencies are satisfied. So here, ACPI_HOTPLUG_CPU depends on ACPI_PROCESSOR and HOTPLUG_CPU. For x86, you're selecting ACPI_HOTPLUG_CPU if ACPI is enabled, and ACPI can be freely enabled. HOTPLUG_CPU depends on SMP, which is also a freely selectable option. Lastly, ACPI_PROCESSOR depends on X86 || IA64 || ARM64 || LOONGARCH, and is a user selectable, defaulting-y option if ACPI is enabled. So, shouldn't the x86 select be: select ACPI_HOTPLUG_CPU if ACPI_PROCESSOR && HOTPLUG_CPU ? I suspect similar issues exist for the other architecture Kconfig files modified above. This seems to also be in the latest rfc too, which is why I'm bringing it up. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel