linux-kernel - Re: [PATCH] drm/xe/pf: fix VFIO link error

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Message-ID: <c174c12d9748e2e9b2e497c1e479100c323e79c2.camel@linux.intel.com>
Date: Thu, 04 Dec 2025 13:19:58 +0100
From: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
To: Arnd Bergmann <arnd@...nel.org>, Rodrigo Vivi <rodrigo.vivi@...el.com>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Michał Winiarski	 <michal.winiarski@...el.com>, Michal
 Wajdeczko <michal.wajdeczko@...el.com>
Cc: Arnd Bergmann <arnd@...db.de>, Matthew Brost <matthew.brost@...el.com>, 
 Lucas De Marchi <demarchi@...nel.org>, Jani Nikula <jani.nikula@...el.com>,
 Riana Tauro <riana.tauro@...el.com>, 	intel-xe@...ts.freedesktop.org,
 dri-devel@...ts.freedesktop.org, 	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/xe/pf: fix VFIO link error

On Thu, 2025-12-04 at 10:41 +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The Makefile logic for building xe_sriov_vfio.o was added
> incorrectly,
> as setting CONFIG_XE_VFIO_PCI=m means it doesn't get included into a
> built-in xe driver:
> 
> ERROR: modpost: "xe_sriov_vfio_stop_copy_enter"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_stop_copy_exit"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_suspend_device"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_wait_flr_done"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_error" [drivers/vfio/pci/xe/xe-vfio-
> pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_resume_data_enter"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_resume_device"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_resume_data_exit"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_data_write" [drivers/vfio/pci/xe/xe-
> vfio-pci.ko] undefined!
> ERROR: modpost: "xe_sriov_vfio_migration_supported"
> [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
> WARNING: modpost: suppressed 3 unresolved symbol warnings because
> there were too many)
> 
> Check for CONFIG_XE_VFIO_PCI being enabled in the Makefile to decide
> whether to
> include the the object instead.

s/the the/the/ found by CI.
Same question here, Do you want to resent or should I fix up when
commiting?

Thanks,
Thomas


> 
> Fixes: 17f22465c5a5 ("drm/xe/pf: Export helpers for VFIO")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/gpu/drm/xe/Makefile | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xe/Makefile
> b/drivers/gpu/drm/xe/Makefile
> index dfc2ded01455..e5f3c2ec9e9a 100644
> --- a/drivers/gpu/drm/xe/Makefile
> +++ b/drivers/gpu/drm/xe/Makefile
> @@ -185,8 +185,8 @@ xe-$(CONFIG_PCI_IOV) += \
>  	xe_sriov_pf_sysfs.o \
>  	xe_tile_sriov_pf_debugfs.o
>  
> -ifeq ($(CONFIG_PCI_IOV),y)
> -	xe-$(CONFIG_XE_VFIO_PCI) += xe_sriov_vfio.o
> +ifdef CONFIG_XE_VFIO_PCI
> +	xe-$(CONFIG_PCI_IOV) += xe_sriov_vfio.o
>  endif
>  
>  # include helpers for tests even when XE is built-in