linux-kernel - Re: [PATCH v17 01/10] x86: kdump: replace the hard-coded alignment with macro CRASH

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Message-ID: <6ad868b9-6c00-f515-074d-e6f980fea7fa@huawei.com>
Date:   Tue, 14 Dec 2021 16:41:46 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Baoquan He <bhe@...hat.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        <x86@...nel.org>, "H . Peter Anvin" <hpa@...or.com>,
        <linux-kernel@...r.kernel.org>, Dave Young <dyoung@...hat.com>,
        Vivek Goyal <vgoyal@...hat.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        <kexec@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        <devicetree@...r.kernel.org>, "Jonathan Corbet" <corbet@....net>,
        <linux-doc@...r.kernel.org>, Randy Dunlap <rdunlap@...radead.org>,
        Feng Zhou <zhoufeng.zf@...edance.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Chen Zhou <dingguo.cz@...group.com>
Subject: Re: [PATCH v17 01/10] x86: kdump: replace the hard-coded alignment
 with macro CRASH_ALIGN



On 2021/12/13 21:17, Baoquan He wrote:
> On 12/10/21 at 02:55pm, Zhen Lei wrote:
>> From: Chen Zhou <chenzhou10@...wei.com>
>>
>> Move CRASH_ALIGN to header asm/kexec.h for later use.
>>
>> Suggested-by: Dave Young <dyoung@...hat.com>
>> Suggested-by: Baoquan He <bhe@...hat.com>
> 
> I remember Dave and I discussed and suggested this when reviewing.
> You can remove my Suggested-by.

OK, I will do it.

> 
> For this one, I would like to add ack:
> 
> Acked-by: Baoquan He <bhe@...hat.com>
> 
>> Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
>> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
>> Tested-by: John Donnelly <John.p.donnelly@...cle.com>
>> Tested-by: Dave Kleikamp <dave.kleikamp@...cle.com>
>> ---
>>  arch/x86/include/asm/kexec.h | 3 +++
>>  arch/x86/kernel/setup.c      | 3 ---
>>  2 files changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
>> index 11b7c06e2828c30..3a22e65262aa70b 100644
>> --- a/arch/x86/include/asm/kexec.h
>> +++ b/arch/x86/include/asm/kexec.h
>> @@ -18,6 +18,9 @@
>>  
>>  # define KEXEC_CONTROL_CODE_MAX_SIZE	2048
>>  
>> +/* 16M alignment for crash kernel regions */
>> +#define CRASH_ALIGN		SZ_16M
>> +
>>  #ifndef __ASSEMBLY__
>>  
>>  #include <linux/string.h>
>> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
>> index 6a190c7f4d71b05..5cc60996eac56d6 100644
>> --- a/arch/x86/kernel/setup.c
>> +++ b/arch/x86/kernel/setup.c
>> @@ -392,9 +392,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)
>>  
>>  #ifdef CONFIG_KEXEC_CORE
>>  
>> -/* 16M alignment for crash kernel regions */
>> -#define CRASH_ALIGN		SZ_16M
>> -
>>  /*
>>   * Keep the crash kernel below this limit.
>>   *
>> -- 
>> 2.25.1
>>
> 
> .
>