linux-kernel - drm/xe: Linker errors on configfs symbols

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Message-ID: <fa25d9b0-1ec5-48fb-9249-78754eef6bd2@intel.com>
Date: Wed, 24 Sep 2025 15:19:22 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Lucas De Marchi <lucas.demarchi@...el.com>,
 Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
 Rodrigo Vivi <rodrigo.vivi@...el.com>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, intel-xe@...ts.freedesktop.org,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: drm/xe: Linker errors on configfs symbols

With a stock 6.17-rc7 and this config:

	https://hansen.beer/~dave/intel/config.xe.20250924

I'm seeing:

ld: vmlinux.o: in function `check_sw_disable':
.../linux.runme/drivers/gpu/drm/xe/xe_hw_engine.c:812: undefined reference to `xe_configfs_get_engines_allowed'
ld: vmlinux.o: in function `xe_survivability_mode_is_requested':
.../linux.runme/drivers/gpu/drm/xe/xe_survivability_mode.c:228: undefined reference to `xe_configfs_get_survivability_mode'
ld: .../linux.runme/drivers/gpu/drm/xe/xe_survivability_mode.c:233: undefined reference to `xe_configfs_clear_survivability_mode'
ld: vmlinux.o: in function `BSWAP_SHUFB_CTL':
sha1-avx2-asm.o:(.rodata+0x57def0): undefined reference to `xe_configfs_init'
ld: sha1-avx2-asm.o:(.rodata+0x57def8): undefined reference to `xe_configfs_exit'
vmlinux.o:(.debug_info+0x3176eb6): relocation truncated to fit: R_X86_64_32 against `.debug_loclists'

I'm compiling the 'xe' driver in to the kernel and I've got configfs compiled in as a module, which is (I suspect) the reason this slipped through the cracks until now.

In any case, I don't see any Kconfig dependencies for configfs in the xe code. The attached patch at least hacks around the issue for me.

Is there a better way of fixing this?
View attachment "xe-kconfig.patch" of type "text/x-patch" (407 bytes)