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xocl cannot compile on 6.16.10
I fully understand that the latest stable kernel might not be on the priority list to support yet. But I believe in two months probably 6.17 or 6.18 would be the next LTS kernel. Is there any plan to support 6.16 at this moment? I want to use 6.16 because amdxdma went into mainline during 6.14 so the current LTS 6.12 does not have this kernel module.
DKMS (dkms-3.2.2) make.log for xrt/2.20.0 for kernel 6.16.10-arch1-1 (x86_64)
Tue Oct 7 10:02:20 EDT 2025
Building module(s)
# command: cd driver/xocl; make KERNEL_SRC=/usr/lib/modules/6.16.10-arch1-1/build; cd ../..
cd userpf; make all
make[1]: Entering directory '/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf'
/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf
make -C /usr/lib/modules/6.16.10-arch1-1/build M=/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf modules
make[2]: Entering directory '/usr/lib/modules/6.16.10-arch1-1/build'
make[3]: Entering directory '/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf'
CC [M] ../xocl_subdev.o
CC [M] ../xocl_ctx.o
CC [M] ../xocl_thread.o
CC [M] ../xocl_fdt.o
CC [M] ../xocl_xclbin.o
CC [M] ../xocl_debug.o
CC [M] ../xocl_xgq.o
CC [M] ../subdev/xdma.o
CC [M] ../subdev/qdma.o
CC [M] ../subdev/feature_rom.o
../subdev/feature_rom.c:152:17: error: initialization of ‘ssize_t (*)(struct file *, struct kobject *, const struct bin_attribute *, char *, loff_t, size_t)’
{aka ‘long int (*)(struct file *, struct kobject *, const struct bin_attribute *, char *, long long int, long unsigned int)’} from incompatible pointer type
‘ssize_t (*)(struct file *, struct kobject *, struct bin_attribute *, char *, loff_t, size_t)’ {aka ‘long int (*)(struct file *, struct kobject *, struct bi
n_attribute *, char *, long long int, long unsigned int)’} [-Wincompatible-pointer-types]
152 | .read = raw_show,
| ^~~~~~~~
../subdev/feature_rom.c:152:17: note: (near initialization for ‘raw_attr.read’)
../subdev/feature_rom.c:130:16: note: ‘raw_show’ declared here
130 | static ssize_t raw_show(struct file *filp, struct kobject *kobj,
| ^~~~~~~~
../subdev/feature_rom.c:164:22: error: initialization of ‘const struct bin_attribute * const*’ from incompatible pointer type ‘struct bin_attribute **’ [-Winc
ompatible-pointer-types]
164 | .bin_attrs = rom_bin_attrs,
| ^~~~~~~~~~~~~
../subdev/feature_rom.c:164:22: note: (near initialization for ‘rom_attr_group.<anonymous>.bin_attrs’)
../subdev/feature_rom.c: In function ‘set_vbnv_name’:
../subdev/feature_rom.c:357:53: warning: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘uint32_t’ {aka ‘unsigned int’} [-
Wformat=]
357 | snprintf(sh_version, sizeof(sh_version), "%lx", idcode);
| ~~^ ~~~~~~
| | |
| | uint32_t {aka unsigned int}
| long unsigned int
| %x
make[5]: *** [/usr/lib/modules/6.16.10-arch1-1/build/scripts/Makefile.build:287: ../subdev/feature_rom.o] Error 1
make[4]: *** [/usr/lib/modules/6.16.10-arch1-1/build/Makefile:2003: .] Error 2
make[3]: *** [/usr/lib/modules/6.16.10-arch1-1/build/Makefile:248: __sub-make] Error 2
make[3]: Leaving directory '/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf'
make[2]: *** [Makefile:248: __sub-make] Error 2
make[2]: Leaving directory '/usr/lib/modules/6.16.10-arch1-1/build'
make[1]: *** [Makefile:137: all] Error 2
make[1]: Leaving directory '/var/lib/dkms/xrt/2.20.0/build/driver/xocl/userpf'
make: *** [Makefile:2: all] Error 2
# exit code: 0
# elapsed time: 00:00:05
It's probably no surprise, but the same failure occurs on 6.17.
$ cat /var/lib/dkms/xrt/2.21.0/build/make.log
DKMS (dkms-3.2.2) make.log for xrt/2.21.0 for kernel 6.17.6+deb14-amd64 (x86_64)
Wed Nov 5 09:39:13 PM CST 2025
Building module(s)
# command: cd driver/xocl; make KERNEL_SRC=/lib/modules/6.17.6+deb14-amd64/build; cd ../..
cd userpf; make all
make[1]: Entering directory '/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf'
/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf
make -C /lib/modules/6.17.6+deb14-amd64/build M=/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf modules
make[2]: Entering directory '/usr/src/linux-headers-6.17.6+deb14-amd64'
make[3]: Entering directory '/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf'
CC [M] ../xocl_subdev.o
CC [M] ../xocl_ctx.o
CC [M] ../xocl_thread.o
CC [M] ../xocl_fdt.o
CC [M] ../xocl_xclbin.o
CC [M] ../xocl_debug.o
CC [M] ../xocl_xgq.o
CC [M] ../subdev/xdma.o
CC [M] ../subdev/qdma.o
CC [M] ../subdev/feature_rom.o
../subdev/feature_rom.c:152:17: error: initialization of ‘ssize_t (*)(struct file *, struct kobject *, const struct bin_attribute *, char *, loff_t, size_t)’ {aka ‘long int (*)(struct file *, struct kobject *, const struct bin_attribute *, char *, long long int, long unsigned int)’} from incompatible pointer type ‘ssize_t (*)(struct file *, struct kobject *, struct bin_attribute *, char *, loff_t, size_t)’ {aka ‘long int (*)(struct file *, struct kobject *, struct bin_attribute *, char *, long long int, long unsigned int)’} [-Wincompatible-pointer-types]
152 | .read = raw_show,
| ^~~~~~~~
../subdev/feature_rom.c:152:17: note: (near initialization for ‘raw_attr.read’)
../subdev/feature_rom.c:130:16: note: ‘raw_show’ declared here
130 | static ssize_t raw_show(struct file *filp, struct kobject *kobj,
| ^~~~~~~~
../subdev/feature_rom.c:164:22: error: initialization of ‘const struct bin_attribute * const*’ from incompatible pointer type ‘struct bin_attribute **’ [-Wincompatible-pointer-types]
164 | .bin_attrs = rom_bin_attrs,
| ^~~~~~~~~~~~~
../subdev/feature_rom.c:164:22: note: (near initialization for ‘rom_attr_group.<anonymous>.bin_attrs’)
../subdev/feature_rom.c: In function ‘set_vbnv_name’:
../subdev/feature_rom.c:357:53: warning: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘uint32_t’ {aka ‘unsigned int’} [-Wformat=]
357 | snprintf(sh_version, sizeof(sh_version), "%lx", idcode);
| ~~^ ~~~~~~
| | |
| | uint32_t {aka unsigned int}
| long unsigned int
| %x
make[5]: *** [/usr/src/linux-headers-6.17.6+deb14-common/scripts/Makefile.build:292: ../subdev/feature_rom.o] Error 1
make[4]: *** [/usr/src/linux-headers-6.17.6+deb14-common/Makefile:2035: .] Error 2
make[3]: *** [/usr/src/linux-headers-6.17.6+deb14-common/Makefile:260: __sub-make] Error 2
make[3]: Leaving directory '/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf'
make[2]: *** [/usr/src/linux-headers-6.17.6+deb14-common/Makefile:260: __sub-make] Error 2
make[2]: Leaving directory '/usr/src/linux-headers-6.17.6+deb14-amd64'
make[1]: *** [Makefile:137: all] Error 2
make[1]: Leaving directory '/var/lib/dkms/xrt/2.21.0/build/driver/xocl/userpf'
make: *** [Makefile:2: all] Error 2
# exit code: 0
# elapsed time: 00:00:07
----------------------------------------------------------------
I want to use 6.16 because amdxdma went into mainline during 6.14 so the current LTS 6.12 does not have this kernel module.
JFYI - you don't need xocl for amdxdna. You need amdxdna. They're for supporting different products/needs. IIRC amdxdna can't work on 6.12, it needs IOMMU changes that came in 6.13/6.14.
@superm1 The unconditional addition of const breaks backwards compatibility with older kernels, e.g. Linux 6.12 in Debian stable (probably everything < 6.16).
Given the huge amount of LINUX_VERSION_CODE and KERNEL_VERSION() in the source I don't think that is intended.
