linux-kernel - Re: [PATCH V5 2/2] x86/efi: Add efi page fault handler to recover from page faults caused by the firmware

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Message-ID: <201809111619.eoqpIQnk%fengguang.wu@intel.com>
Date:   Tue, 11 Sep 2018 16:19:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Sai Praneeth Prakhya <sai.praneeth.prakhya@...el.com>
Cc:     kbuild-all@...org, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Sai Praneeth <sai.praneeth.prakhya@...el.com>,
        Al Stone <astone@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Ingo Molnar <mingo@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Bhupesh Sharma <bhsharma@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: Re: [PATCH V5 2/2] x86/efi: Add efi page fault handler to recover
 from page faults caused by the firmware

Hi Sai,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on efi/next]
[cannot apply to v4.19-rc3 next-20180910]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Sai-Praneeth-Prakhya/efi-Make-efi_rts_work-accessible-to-efi-page-fault-handler/20180911-142222
base:   https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next
config: i386-alldefconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   arch/x86/mm/fault.o: In function `no_context':
>> fault.c:(.text+0x6a1): undefined reference to `efi_recover_from_page_fault'
   fault.c:(.text+0x742): undefined reference to `efi_recover_from_page_fault'

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

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