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Message-ID: <A12F96370D84BE9F+ZdcTnYkBf/5n/DlT@centos8>
Date: Thu, 22 Feb 2024 17:27:57 +0800
From: Dawei Li <dawei.li@...ngroup.cn>
To: catalin.marinas@....com, will@...nel.org
Cc: mark.rutland@....com, mcgrof@...nel.org, jpoimboe@...nel.org,
j.granados@...sung.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, set_pte_at@...look.com
Subject: Re: [PATCH] arm64: remove unneeded BUILD_BUG_ON assertion
Hi,
On Fri, Feb 02, 2024 at 12:02:11PM +0800, Dawei Li wrote:
> Since commit c02433dd6de3 ("arm64: split thread_info from task stack"),
> CONFIG_THREAD_INFO_IN_TASK is enabled unconditionally for arm64. So
> remove this always-true assertion from arch_dup_task_struct.
>
> Signed-off-by: Dawei Li <dawei.li@...ngroup.cn>
Just a gentle remainder:).
Thanks,
Dawei
> ---
> arch/arm64/kernel/process.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
> index 7387b68c745b..4ae31b7af6c3 100644
> --- a/arch/arm64/kernel/process.c
> +++ b/arch/arm64/kernel/process.c
> @@ -290,9 +290,6 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
> fpsimd_preserve_current_state();
> *dst = *src;
>
> - /* We rely on the above assignment to initialize dst's thread_flags: */
> - BUILD_BUG_ON(!IS_ENABLED(CONFIG_THREAD_INFO_IN_TASK));
> -
> /*
> * Detach src's sve_state (if any) from dst so that it does not
> * get erroneously used or freed prematurely. dst's copies
> --
> 2.27.0
>
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