linux-kernel - Re: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write

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Message-ID: <be511fb0-217e-43b2-9744-f9b001bff389@redhat.com>
Date: Mon, 1 Sep 2025 12:09:24 +0200
From: David Hildenbrand <david@...hat.com>
To: kernel test robot <lkp@...el.com>,
 "Kalyazin, Nikita" <kalyazin@...zon.co.uk>,
 "pbonzini@...hat.com" <pbonzini@...hat.com>,
 "shuah@...nel.org" <shuah@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
 "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
 "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "michael.day@....com" <michael.day@....com>,
 "jthoughton@...gle.com" <jthoughton@...gle.com>,
 "Roy, Patrick" <roypat@...zon.co.uk>, "Thomson, Jack"
 <jackabt@...zon.co.uk>, "Manwaring, Derek" <derekmn@...zon.com>,
 "Cali, Marco" <xmarcalx@...zon.co.uk>
Subject: Re: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write

On 30.08.25 20:56, kernel test robot wrote:
> Hi Nikita,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on a6ad54137af92535cfe32e19e5f3bc1bb7dbd383]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Kalyazin-Nikita/KVM-guest_memfd-add-generic-population-via-write/20250828-233437
> base:   a6ad54137af92535cfe32e19e5f3bc1bb7dbd383
> patch link:    https://lore.kernel.org/r/20250828153049.3922-2-kalyazin%40amazon.com
> patch subject: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write
> config: x86_64-randconfig-001-20250830 (https://download.01.org/0day-ci/archive/20250831/202508310252.E5uFh1hx-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250831/202508310252.E5uFh1hx-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202508310252.E5uFh1hx-lkp@intel.com/
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):
> 
>>> ERROR: modpost: "filemap_remove_folio" [arch/x86/kvm/kvm.ko] undefined!

Right, that one is not exported.

-- 
Cheers

David / dhildenb