linux-kernel - Re: [PATCH v2] x86/mce: remove unused mce

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Date:   Thu, 15 Jun 2023 19:08:14 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <tony.luck@...el.com>, <bp@...en8.de>, <tglx@...utronix.de>,
        <mingo@...hat.com>, <dave.hansen@...ux.intel.com>
CC:     <hpa@...or.com>, <x86@...nel.org>, <linux-edac@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] x86/mce: remove unused mce_vaddr

On 2023/6/3 19:11, Miaohe Lin wrote:
> Since commit a6e3cf70b772 ("x86/mce: Change to not send SIGBUS error during
> copy from user"), mce_vaddr is not used anymore. Remove it.
> 

friendly ping.. :)

> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
> ---
>  arch/x86/kernel/cpu/mce/severity.c | 2 --
>  include/linux/sched.h              | 1 -
>  2 files changed, 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/mce/severity.c b/arch/x86/kernel/cpu/mce/severity.c
> index c4477162c07d..1c03221ddcb1 100644
> --- a/arch/x86/kernel/cpu/mce/severity.c
> +++ b/arch/x86/kernel/cpu/mce/severity.c
> @@ -255,8 +255,6 @@ static bool is_copy_from_user(struct pt_regs *regs)
>  	if (fault_in_kernel_space(addr))
>  		return false;
>  
> -	current->mce_vaddr = (void __user *)addr;
> -
>  	return true;
>  }
>  
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index eed5d65b8d1f..3054a7087230 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1493,7 +1493,6 @@ struct task_struct {
>  #endif
>  
>  #ifdef CONFIG_X86_MCE
> -	void __user			*mce_vaddr;
>  	__u64				mce_kflags;
>  	u64				mce_addr;
>  	__u64				mce_ripv : 1,
>