linux-kernel - Re: [PATCH] x86/kdump: always reserve the low 1MiB when the crashkernel

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Date:   Fri, 25 Oct 2019 06:12:28 +0800
From:   kbuild test robot <lkp@...el.com>
To:     lijiang <lijiang@...hat.com>
Cc:     kbuild-all@...ts.01.org, Borislav Petkov <bp@...en8.de>,
        linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, bhe@...hat.com, dyoung@...hat.com,
        jgross@...e.com, dhowells@...hat.com, Thomas.Lendacky@....com,
        ebiederm@...ssion.com, vgoyal@...hat.com, kexec@...ts.infradead.org
Subject: Re: [PATCH] x86/kdump: always reserve the low 1MiB when the
 crashkernel

Hi lijiang,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.4-rc4 next-20191024]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/lijiang/x86-kdump-always-reserve-the-low-1MiB-when-the-crashkernel/20191025-030439
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f116b96685a046a89c25d4a6ba2da489145c8888
config: i386-defconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> WARNING: vmlinux.o(.text+0xe39b7): Section mismatch in reference from the function kexec_reserve_low_1MiB() to the variable .init.data:boot_command_line
   The function kexec_reserve_low_1MiB() references
   the variable __initdata boot_command_line.
   This is often because kexec_reserve_low_1MiB lacks a __initdata
   annotation or the annotation of boot_command_line is wrong.
--
>> WARNING: vmlinux.o(.text+0xe39d0): Section mismatch in reference from the function kexec_reserve_low_1MiB() to the function .meminit.text:memblock_reserve()
   The function kexec_reserve_low_1MiB() references
   the function __meminit memblock_reserve().
   This is often because kexec_reserve_low_1MiB lacks a __meminit
   annotation or the annotation of memblock_reserve is wrong.

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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