linux-kernel - Re: [PATCH v5 4/4] arm64: Kconfig: Enable HOTPLUG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4024c9be-aae9-4248-ab73-813c3c5d790b@arm.com>
Date: Tue, 27 Aug 2024 17:40:44 +0200
From: Pierre Gondois <pierre.gondois@....com>
To: Yicong Yang <yangyicong@...wei.com>
Cc: linuxppc-dev@...ts.ozlabs.org, bp@...en8.de, dave.hansen@...ux.intel.com,
 x86@...nel.org, mingo@...hat.com, linux-arm-kernel@...ts.infradead.org,
 mpe@...erman.id.au, peterz@...radead.org, tglx@...utronix.de,
 sudeep.holla@....com, will@...nel.org, catalin.marinas@....com,
 linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
 gregkh@...uxfoundation.org, rafael@...nel.org, jonathan.cameron@...wei.com,
 prime.zeng@...ilicon.com, linuxarm@...wei.com, yangyicong@...ilicon.com,
 xuwei5@...wei.com, guohanjun@...wei.com
Subject: Re: [PATCH v5 4/4] arm64: Kconfig: Enable HOTPLUG_SMT

Hello Yicong,

Is it necessary to have an explicit dependency over SMP for arm64 ? Cf.
   commit 4b3dc9679cf7 ("arm64: force CONFIG_SMP=y and remove redundant #ifdefs")

Regards,
Pierre

On 8/6/24 10:53, Yicong Yang wrote:
> From: Yicong Yang <yangyicong@...ilicon.com>
> 
> Enable HOTPLUG_SMT for SMT control.
> 
> Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
> ---
>   arch/arm64/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index a2f8ff354ca6..bd3bc2f5e0ec 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -238,6 +238,7 @@ config ARM64
>   	select HAVE_KRETPROBES
>   	select HAVE_GENERIC_VDSO
>   	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
> +	select HOTPLUG_SMT if (SMP && HOTPLUG_CPU)
>   	select IRQ_DOMAIN
>   	select IRQ_FORCED_THREADING
>   	select KASAN_VMALLOC if KASAN