linux-kernel - Re: [PATCH 1/7] x86: Move ARCH_HAS_CPU

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Date:   Mon, 27 Nov 2023 15:44:03 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Mihai Carabas <mihai.carabas@...cle.com>
Cc:     linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        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,
        akpm@...ux-foundation.org, peterz@...radead.org,
        dianders@...omium.org, npiggin@...il.com,
        rick.p.edgecombe@...el.com, joao.m.martins@...cle.com,
        juerg.haefliger@...onical.com, mic@...ikod.net, arnd@...db.de,
        ankur.a.arora@...cle.com
Subject: Re: [PATCH 1/7] x86: Move ARCH_HAS_CPU_RELAX to arch

On Mon 2023-11-20 16:01:32, Mihai Carabas wrote:
> From: Joao Martins <joao.m.martins@...cle.com>
> 
> ARM64 is going to use it for haltpoll support (for poll-state)
> so move the definition to be arch-agnostic and allow architectures
> to override it.

This says that the definition is moved.

> diff --git a/arch/Kconfig b/arch/Kconfig
> index 4a85a10b12fd..92af0e9bc35e 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -1371,6 +1371,9 @@ config RELR
>  config ARCH_HAS_MEM_ENCRYPT
>  	bool
>  
> +config ARCH_HAS_CPU_RELAX
> +	bool
> +
>  config ARCH_HAS_CC_PLATFORM
>  	bool
>  
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index d1c362f479d9..0c77670d020e 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -73,6 +73,7 @@ config X86
>  	select ARCH_HAS_CACHE_LINE_SIZE
>  	select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION
>  	select ARCH_HAS_CPU_FINALIZE_INIT
> +	select ARCH_HAS_CPU_RELAX
>  	select ARCH_HAS_CURRENT_STACK_POINTER
>  	select ARCH_HAS_DEBUG_VIRTUAL
>  	select ARCH_HAS_DEBUG_VM_PGTABLE	if !X86_PAE

But the definion is only added here.

I would expect that the patch also removes the original definion.


Best Regards,
Petr