linux-kernel - Re: [PATCH v5 1/3] vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages

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Message-ID: <20250625022942.76489-1-lizhe.67@bytedance.com>
Date: Wed, 25 Jun 2025 10:29:42 +0800
From: lizhe.67@...edance.com
To: lkp@...el.com
Cc: alex.williamson@...hat.com,
	david@...hat.com,
	jgg@...pe.ca,
	kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lizhe.67@...edance.com,
	oe-kbuild-all@...ts.linux.dev,
	peterx@...hat.com
Subject: Re: [PATCH v5 1/3] vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()

On Wed, 25 Jun 2025 00:23:03 +0800,
kernel test robot <lkp@...el.com> wrote:

> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on awilliam-vfio/next]
> [also build test ERROR on awilliam-vfio/for-linus linus/master v6.16-rc3 next-20250624]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/lizhe-67-bytedance-com/vfio-type1-batch-vfio_find_vpfn-in-function-vfio_unpin_pages_remote/20250620-112605
> base:   https://github.com/awilliam/linux-vfio.git next
> patch link:    https://lore.kernel.org/r/20250620032344.13382-2-lizhe.67%40bytedance.com
> patch subject: [PATCH v5 1/3] vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
> config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20250625/202506250037.VfdBAPP3-lkp@intel.com/config)
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250625/202506250037.VfdBAPP3-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/202506250037.VfdBAPP3-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/vfio/vfio_iommu_type1.c: In function 'vfio_unpin_pages_remote':
> >> drivers/vfio/vfio_iommu_type1.c:738:37: error: implicit declaration of function 'vpfn_pages'; did you mean 'vma_pages'? [-Werror=implicit-function-declaration]
>      738 |         long unlocked = 0, locked = vpfn_pages(dma, iova, npage);
>          |                                     ^~~~~~~~~~
>          |                                     vma_pages
>    cc1: some warnings being treated as errors

Perhaps we need to compile with this patch[1] included to avoid build
errors.

Thanks,
Zhe

[1]: https://lore.kernel.org/all/20250529064947.38433-1-lizhe.67@bytedance.com/