linux-kernel - Re: [PATCH v2] MIPS: SMP-CPS: fix build error when 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] [day] [month] [year] [list]

Message-ID: <014a5c7c-c9ab-3814-4d87-2f8bb9c08440@linaro.org>
Date:   Sun, 19 Feb 2023 23:12:31 +0100
From:   Philippe Mathieu-Daudé <philmd@...aro.org>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     Dengcheng Zhu <dzhu@...ecomp.com>,
        Paul Burton <paulburton@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org,
        Sergei Shtylyov <sergei.shtylyov@...il.com>
Subject: Re: [PATCH v2] MIPS: SMP-CPS: fix build error when HOTPLUG_CPU not
 set

On 17/2/23 21:07, Randy Dunlap wrote:
> When MIPS_CPS=y, MIPS_CPS_PM is not set, HOTPLUG_CPU is not set, and
> KEXEC=y, cps_shutdown_this_cpu() attempts to call cps_pm_enter_state(),
> which is not built when MIPS_CPS_PM is not set.
> Conditionally execute the else branch based on CONFIG_HOTPLUG_CPU
> to remove the build error.
> This build failure is from a randconfig file.
> 
> mips-linux-ld: arch/mips/kernel/smp-cps.o: in function `$L162':
> smp-cps.c:(.text.cps_kexec_nonboot_cpu+0x31c): undefined reference to `cps_pm_enter_state'
> 
> Fixes: 1447864bee4c ("MIPS: kexec: CPS systems to halt nonboot CPUs")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Dengcheng Zhu <dzhu@...ecomp.com>
> Cc: Paul Burton <paulburton@...nel.org>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: linux-mips@...r.kernel.org
> Cc: Sergei Shtylyov <sergei.shtylyov@...il.com>
> ---
> v2: use IS_ENABLED() instead of #ifdef-ery (Sergei)
> 
>   arch/mips/kernel/smp-cps.c |    8 +++++---
>   1 file changed, 5 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>