RE: [PATCH v2 01/10] x86/Kconfig: enable X86_X2APIC by default and improve help text

[Elliott, Robert (Servers)]

> As many current platforms (most modern Intel CPUs and QEMU) have x2APIC
> present, enable CONFIG_X86_X2APIC by default as it gives performance
> and functionality benefits. Additionally, if the BIOS has already
> switched APIC to x2APIC mode, but CONFIG_X86_X2APIC is disabled, the
> kernel will panic in arch/x86/kernel/apic/apic.c .
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> @@ -440,15 +440,27 @@ config X86_FEATURE_NAMES
>  	  If in doubt, say Y.
> 
>  config X86_X2APIC
> -	bool "Support x2apic"
> +	bool "x2APIC interrupt controller architecture support"
>  	depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP ||
> HYPERVISOR_GUEST)
> +	default y

Could this option be added to
	arch/x86/configs/x86_64_defconfig

so defconfig builds don't crash on current platforms?