linux-kernel - Re: [PATCH 3/9] cpuidle-haltpoll: condition on ARCH_CPUIDLE

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Date: Wed, 22 May 2024 17:09:56 +0100
From: Joao Martins <joao.m.martins@...cle.com>
To: Ankur Arora <ankur.a.arora@...cle.com>
Cc: catalin.marinas@....com, will@...nel.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, x86@...nel.org, hpa@...or.com,
        pbonzini@...hat.com, wanpengli@...cent.com, vkuznets@...hat.com,
        rafael@...nel.org, daniel.lezcano@...aro.org, peterz@...radead.org,
        linux-pm@...r.kernel.org, arnd@...db.de, lenb@...nel.org,
        mark.rutland@....com, harisokn@...zon.com, boris.ostrovsky@...cle.com,
        konrad.wilk@...cle.com, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/9] cpuidle-haltpoll: condition on ARCH_CPUIDLE_HALTPOLL

On 30/04/2024 19:37, Ankur Arora wrote:
> diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
> index 75f6e176bbc8..c1bebadf22bc 100644
> --- a/drivers/cpuidle/Kconfig
> +++ b/drivers/cpuidle/Kconfig
> @@ -72,8 +71,8 @@ source "drivers/cpuidle/Kconfig.riscv"
>  endmenu
>  
>  config HALTPOLL_CPUIDLE
> -	tristate "Halt poll cpuidle driver"
> -	depends on X86 && KVM_GUEST && ARCH_HAS_OPTIMIZED_POLL
> +	tristate "Haltpoll cpuidle driver"
> +	depends on ARCH_CPUIDLE_HALTPOLL && ARCH_HAS_OPTIMIZED_POLL
>  	select CPU_IDLE_GOV_HALTPOLL
>  	default y
>  	help

I suspect the drop on KVM_GUEST is causing the kbuild robot as it's
arch/x86/kernel/kvm.c that ends up including the arch haltpoll definitions.