linux-kernel - Re: [PATCH -next v4 0/3] minor improvements for x86 mce processing

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Date: Mon, 15 Jan 2024 21:25:57 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: Tong Tiangen <tongtiangen@...wei.com>, Thomas Gleixner
	<tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov
	<bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>, Tony Luck <tony.luck@...el.com>, Andy
 Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Andrew
 Morton <akpm@...ux-foundation.org>, Naoya Horiguchi <naoya.horiguchi@....com>
CC: <linux-kernel@...r.kernel.org>, <linux-edac@...r.kernel.org>,
	<linux-mm@...ck.org>, Guohanjun <guohanjun@...wei.com>
Subject: Re: [PATCH -next v4 0/3] minor improvements for x86 mce processing

Hi Borislav and Tony，

On 2024/1/11 21:55, Tong Tiangen wrote:
> In this patchset, we remove the unused macro EX_TYPE_COPY and centralize
> the processing of memory-failure to do_machine_check() to avoid calling
> memory_failure_queue() separately for different MC-Safe scenarios. In
> addition, MCE_IN_KERNEL_COPYIN is renamed MCE_IN_KERNEL_COPY_MC to expand
> its usage scope.

The patchset is a followup[1], as Borislav suggested[2], we firstly
cleanup unused EX_TYPE_COPY, then rename MCE_IN_KERNEL_COPYIN to
reduce confusion, could you give us some comments about it,
many thanks.

> 
> [1]https://lore.kernel.org/linux-mm/20230526063242.133656-1-wangkefeng.wang@huawei.com/
> 
[2] 
https://lore.kernel.org/linux-edac/20230602160138.GDZHoSYsWoPAinMszk@fat_crate.local/
> since v3:
>    1. Rebased on linux-next tag next-20240111.
>    2. Delete duplicate commit references on patch 3.
> 
> since v2:
>    1. remove redundant fixup type EX_TYPE_COPY.
>    2. rename MCE_IN_KERNEL_COPYIN to MCE_IN_KERNEL_COPY_MC.
>    3. update patch3's commit message and the processing logic of
>       EX_TYPE_DEFAULT_MCE_SAFE based on the discussion of [1].
> 
> Kefeng Wang (1):
>    x86/mce: set MCE_IN_KERNEL_COPY_MC for DEFAULT_MCE_SAFE exception
> 
> Tong Tiangen (2):
>    x86/mce: remove redundant fixup type EX_TYPE_COPY
>    x86/mce: rename MCE_IN_KERNEL_COPYIN to MCE_IN_KERNEL_COPY_MC
> 
>   arch/x86/include/asm/asm.h                 |  3 ---
>   arch/x86/include/asm/extable_fixup_types.h | 23 +++++++++++-----------
>   arch/x86/include/asm/mce.h                 |  8 ++++----
>   arch/x86/kernel/cpu/mce/core.c             |  2 +-
>   arch/x86/kernel/cpu/mce/severity.c         |  7 +++----
>   arch/x86/mm/extable.c                      |  9 ---------
>   mm/ksm.c                                   |  1 -
>   mm/memory.c                                | 13 ++++--------
>   8 files changed, 23 insertions(+), 43 deletions(-)
>