From: chenzhou <chenzhou10@huawei.com>
To: Baoquan He <bhe@redhat.com>
Cc: <mingo@redhat.com>, <tglx@linutronix.de>, <rppt@kernel.org>,
<dyoung@redhat.com>, <catalin.marinas@arm.com>, <will@kernel.org>,
<nsaenzjulienne@suse.de>, <corbet@lwn.net>,
<John.P.donnelly@oracle.com>, <prabhakar.pkin@gmail.com>,
<horms@verge.net.au>, <robh+dt@kernel.org>, <arnd@arndb.de>,
<james.morse@arm.com>, <xiexiuqi@huawei.com>,
<guohanjun@huawei.com>, <huawei.libin@huawei.com>,
<wangkefeng.wang@huawei.com>, <linux-doc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kexec@lists.infradead.org>,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v14 06/11] x86/elf: Move vmcore_elf_check_arch_cross to arch/x86/include/asm/elf.h
Date: Thu, 18 Feb 2021 15:05:58 +0800 [thread overview]
Message-ID: <e59d88ad-7523-01aa-e1c3-f2fe6a695f0b@huawei.com> (raw)
In-Reply-To: <20210218062508.GH2871@MiWiFi-R3L-srv>
On 2021/2/18 14:31, Baoquan He wrote:
> On 01/30/21 at 03:10pm, Chen Zhou wrote:
>> Move macro vmcore_elf_check_arch_cross from arch/x86/include/asm/kexec.h
>> to arch/x86/include/asm/elf.h to fix the following compiling warning:
>>
>> make ARCH=i386
>> In file included from arch/x86/kernel/setup.c:39:0:
>> ./arch/x86/include/asm/kexec.h:77:0: warning: "vmcore_elf_check_arch_cross" redefined
>> # define vmcore_elf_check_arch_cross(x) ((x)->e_machine == EM_X86_64)
>>
>> In file included from arch/x86/kernel/setup.c:9:0:
>> ./include/linux/crash_dump.h:39:0: note: this is the location of the previous definition
>> #define vmcore_elf_check_arch_cross(x) 0
>>
>> The root cause is that vmcore_elf_check_arch_cross under CONFIG_CRASH_CORE
>> depend on CONFIG_KEXEC_CORE. Commit 2db65f1db17d ("x86: kdump: move
>> reserve_crashkernel[_low]() into crash_core.c") triggered the issue.
>>
>> Suggested by Mike, simply move vmcore_elf_check_arch_cross from
>> arch/x86/include/asm/kexec.h to arch/x86/include/asm/elf.h to fix
>> the warning.
>>
>> Fixes: 2db65f1db17d ("x86: kdump: move reserve_crashkernel[_low]() into crash_core.c")
> Where does this commit id '2db65f1db17d' come from? Here you are fixing
> another pathc in the same patchset. Please merge this with patch 05/11.
Yeah, the commit id is invalid, i will merge this patch with patch 05/11.
Thanks,
Chen Zhou
>
>> Reported-by: kernel test robot <lkp@intel.com>
>> Suggested-by: Mike Rapoport <rppt@kernel.org>
>> Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
>> ---
>> arch/x86/include/asm/elf.h | 3 +++
>> arch/x86/include/asm/kexec.h | 3 ---
>> 2 files changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
>> index 66bdfe838d61..5333777cc758 100644
>> --- a/arch/x86/include/asm/elf.h
>> +++ b/arch/x86/include/asm/elf.h
>> @@ -94,6 +94,9 @@ extern unsigned int vdso32_enabled;
>>
>> #define elf_check_arch(x) elf_check_arch_ia32(x)
>>
>> +/* We can also handle crash dumps from 64 bit kernel. */
>> +# define vmcore_elf_check_arch_cross(x) ((x)->e_machine == EM_X86_64)
>> +
>> /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
>> contains a pointer to a function which might be registered using `atexit'.
>> This provides a mean for the dynamic linker to call DT_FINI functions for
>> diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
>> index 2b18f918203e..6fcae01a9cca 100644
>> --- a/arch/x86/include/asm/kexec.h
>> +++ b/arch/x86/include/asm/kexec.h
>> @@ -72,9 +72,6 @@ struct kimage;
>>
>> /* The native architecture */
>> # define KEXEC_ARCH KEXEC_ARCH_386
>> -
>> -/* We can also handle crash dumps from 64 bit kernel. */
>> -# define vmcore_elf_check_arch_cross(x) ((x)->e_machine == EM_X86_64)
>> #else
>> /* Maximum physical address we can use pages from */
>> # define KEXEC_SOURCE_MEMORY_LIMIT (MAXMEM-1)
>> --
>> 2.20.1
>>
> .
>
next prev parent reply other threads:[~2021-02-18 7:52 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-30 7:10 [PATCH v14 00/11] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2021-01-30 7:10 ` [PATCH v14 01/11] x86: kdump: replace the hard-coded alignment with macro CRASH_ALIGN Chen Zhou
2021-02-18 3:29 ` Baoquan He
2021-02-24 14:19 ` Catalin Marinas
2021-02-25 7:25 ` Baoquan He
2021-02-26 6:45 ` chenzhou
2021-02-26 15:38 ` Eric W. Biederman
2021-03-02 7:43 ` Baoquan He
2021-03-29 2:34 ` chenzhou
2021-01-30 7:10 ` [PATCH v14 02/11] x86: kdump: make the lower bound of crash kernel reservation consistent Chen Zhou
2021-02-18 3:33 ` Baoquan He
2021-02-24 14:35 ` Catalin Marinas
2021-02-25 7:08 ` Baoquan He
2021-02-25 14:42 ` Catalin Marinas
2021-02-25 15:44 ` Baoquan He
2021-02-26 7:32 ` chenzhou
2021-01-30 7:10 ` [PATCH v14 03/11] x86: kdump: use macro CRASH_ADDR_LOW_MAX in functions reserve_crashkernel() Chen Zhou
2021-02-18 8:23 ` Baoquan He
2021-01-30 7:10 ` [PATCH v14 04/11] x86: kdump: move xen_pv_domain() check and insert_resource() to setup_arch() Chen Zhou
2021-02-18 4:14 ` Baoquan He
2021-01-30 7:10 ` [PATCH v14 05/11] x86: kdump: move reserve_crashkernel[_low]() into crash_core.c Chen Zhou
2021-01-30 7:10 ` [PATCH v14 06/11] x86/elf: Move vmcore_elf_check_arch_cross to arch/x86/include/asm/elf.h Chen Zhou
2021-02-18 6:31 ` Baoquan He
2021-02-18 7:05 ` chenzhou [this message]
2021-01-30 7:10 ` [PATCH v14 07/11] arm64: kdump: introduce some macroes for crash kernel reservation Chen Zhou
2021-02-04 16:20 ` Nicolas Saenz Julienne
2021-02-04 16:27 ` Nicolas Saenz Julienne
2021-01-30 7:10 ` [PATCH v14 08/11] arm64: kdump: reimplement crashkernel=X Chen Zhou
2021-02-24 16:04 ` Catalin Marinas
2021-02-26 10:31 ` chenzhou
2021-02-26 10:43 ` chenzhou
2021-01-30 7:10 ` [PATCH v14 09/11] x86, arm64: Add ARCH_WANT_RESERVE_CRASH_KERNEL config Chen Zhou
2021-02-18 7:31 ` Baoquan He
2021-02-18 7:40 ` Baoquan He
2021-02-18 8:35 ` Baoquan He
2021-02-20 3:22 ` chenzhou
2021-01-30 7:10 ` [PATCH v14 10/11] arm64: kdump: add memory for devices by DT property linux,usable-memory-range Chen Zhou
2021-01-30 7:10 ` [PATCH v14 11/11] kdump: update Documentation about crashkernel Chen Zhou
2021-01-30 17:53 ` Randy Dunlap
2021-02-04 1:53 ` chenzhou
2021-02-18 8:40 ` Baoquan He
2021-02-20 3:25 ` chenzhou
2021-02-08 6:46 ` [PATCH v14 00/11] support reserving crashkernel above 4G on arm64 kdump chenzhou
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