2.6.20-rt8 kernel patch

[Boomer]

I'm trying to install the nvidia driver on the kernel patched with this patch but it fails:

-> Building kernel module:
   executing: 'cd ./usr/src/nv; make module SYSSRC=/usr/src/kernels/linux-2.6.2
   0-rt8rt/ SYSOUT=/usr/src/kernels/linux-2.6.20-rt8rt/'...
   
   NVIDIA: calling KBUILD...
   make CC=cc  KBUILD_VERBOSE=1 -C /usr/src/kernels/linux-2.6.20-rt8rt/ SUBDIRS
   =/tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv modules
   test -e include/linux/autoconf.h -a -e include/config/auto.conf || (		\
   	echo;								\
   	echo "  ERROR: Kernel configuration is invalid.";		\
   	echo "         include/linux/autoconf.h or include/config/auto.conf are mis
   sing.";	\
   	echo "         Run 'make oldconfig && make prepare' on kernel src to fix it
   .";	\
   	echo;								\
   	/bin/false)
   mkdir -p /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/.tmp_vers
   ions
   rm -f /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/.tmp_version
   s/*
   make -f scripts/Makefile.build obj=/tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631
   -pkg1/usr/src/nv
   echo \#define NV_COMPILER \"`cc -v 2>&1 | tail -n 1`\" > /tmp/selfgz3570/NVI
   DIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv_compiler.h
     cc -Wp,-MD,/tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/.nv.o
   .d  -nostdinc -isystem /usr/lib/gcc/i386-redhat-linux/4.1.1/include -D__KERN
   EL__ -Iinclude  -include include/linux/autoconf.h -Wall -Wundef -Wstrict-pro
   totypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Os -pipe -msoft-flo
   at -mpreferred-stack-boundary=2  -march=athlon -mregparm=3 -ffreestanding -m
   accumulate-outgoing-args -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -I
   include/asm-i386/mach-default -fomit-frame-pointer  -fno-stack-protector -Wd
   eclaration-after-statement -Wno-pointer-sign -I/tmp/selfgz3570/NVIDIA-Linux-
   x86-1.0-9631-pkg1/usr/src/nv -Wall -Wimplicit -Wreturn-type -Wswitch -Wforma
   t -Wchar-subscripts -Wparentheses -Wpointer-arith  -Wno-multichar  -Werror -
   O -fno-common -msoft-float -MD   -Wsign-compare -Wno-cast-qual -Wno-error -D
   _LOOSE_KERNEL_NAMES -D__KERNEL__ -DMODULE  -DNVRM -DNV_MAJOR_VERSION=1 -DNV_
   MINOR_VERSION=0 -DNV_PATCHLEVEL=9631  -UDEBUG -U_DEBUG -DNDEBUG -DNV_SIGNAL_
   STRUCT_RLIM -DNV_MULTIPLE_BRIDGE_AGPGART_PRESENT -DNV_PCI_GET_CLASS_PRESENT 
   -DNV_SYSCTL_MAX_MAP_COUNT_PRESENT -DNV_PM_MESSAGE_T_PRESENT -DNV_PCI_CHOOSE_
   STATE_PRESENT -
   DNV_VM_INSERT_PAGE_PRESENT -DNV_OLD_MM_KGDB_BREAKPOINT_PRESENT -DNV_REMAP_PF
   N_RANGE_PRESENT -DNV_CHANGE_PAGE_ATTR_PRESENT -DNV_VMAP_4_PRESENT  -DMODULE 
   -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(nv)"  -D"KBUILD_MODNAME=K
   BUILD_STR(nvidia)" -c -o /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/
   src/nv/.tmp_nv.o /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/n
   v.c
   In file included from include/linux/list.h:8,
                    from include/linux/plist.h:77,
                    from include/linux/rtmutex.h:16,
                    from include/linux/rt_lock.h:13,
                    from include/linux/spinlock.h:116,
                    from include/linux/capability.h:45,
                    from include/linux/sched.h:46,
                    from include/linux/utsname.h:35,
                    from /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src
   /nv/nv-linux.h:19,
                    from /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src
   /nv/nv.c:14:
   include/linux/prefetch.h: In function ‘prefetch_range’:
   include/linux/prefetch.h:62: warning: pointer of type ‘void *’ used in a
   rithmetic
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c: At top level
   :
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c:110: warning:
   ‘kmem_cache_t’ is deprecated
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c: In function 
   ‘nv_kern_open’:
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c:1849: error: 
   ‘SA_INTERRUPT’ undeclared (first use in this function)
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c:1849: error: 
   (Each undeclared identifier is reported only once
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c:1849: error: 
   for each function it appears in.)
   /tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.c:1849: error: 
   ‘SA_SHIRQ’ undeclared (first use in this function)
   make[3]: *** [/tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/nv.o
   ] Error 1
   make[2]: *** [_module_/tmp/selfgz3570/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src
   /nv] Error 2
   NVIDIA: left KBUILD.
   nvidia.ko failed to build!
   make[1]: *** [module] Error 1
   make: *** [module] Error 2
-> Error.

Any idea if/how I can get it to work?

[th0rgal]

sure

replace SA_SHIRQ by IRQF_SHARED
replace SA_INTERRUPT by IRQF_DISABLED

[Boomer]

Thanks!

[Boomer]

Ok, now I get an error with this output:

Building kernel module:
-snip-

  Building modules, stage 2.
   make -f /usr/src/kernels/linux-2.6.20-rt/scripts/Makefile.modpost
     scripts/mod/modpost -m -a -i /usr/src/kernels/linux-2.6.20-rt/Module.symve
   rs -I /home/nooq/fairu/Downloads/NVIDIA-Linux-x86-1.0-9631-pkg1/usr/src/nv/M
   odule.symvers -o /home/nooq/fairu/Downloads/NVIDIA-Linux-x86-1.0-9631-pkg1/u
   sr/src/nv/Module.symvers -w vmlinux /home/nooq/fairu/Downloads/NVIDIA-Linux-
   x86-1.0-9631-pkg1/usr/src/nv/nvidia.o
   WARNING: could not find /home/nooq/fairu/Downloads/NVIDIA-Linux-x86-1.0-9631
   -pkg1/usr/src/nv/.nv-kernel.o.cmd for /home/nooq/fairu/Downloads/NVIDIA-Linu
   x-x86-1.0-9631-pkg1/usr/src/nv/nv-kernel.o
   FATAL: modpost: GPL-incompatible module nvidia.ko uses GPL-only symbol 'page
   fault_disable'
   make[4]: *** [__modpost] Error 1
   make[3]: *** [modules] Error 2
   make[2]: *** [modules] Error 2
   NVIDIA: left KBUILD.
   nvidia.ko failed to build!
   make[1]: *** [module] Error 1
   make: *** [module] Error 2
-> Error.
ERROR: Unable to build the NVIDIA kernel module.

Any ideas?

[JaXXoN]

Originally Posted by Boomer

[code]
FATAL: modpost: GPL-incompatible module nvidia.ko uses GPL-only symbol 'page

Some kernel configuration options make the nvidia driver compiling-in
certain GPL-only symbols. Either try to figure out which obtions that
are, or just disable GPL-only checking and manally define the missing symbol.

For details, please check steps 3 to 5 in the following post:
http://www.nvnews.net/vbulletin/showthread.php?t=87541

BTW.: Although there is a good chance that the 9xxx series "vanilla" nvidia
driver will work with a -rt kernel, i would strongly recommend applying
the patch mentioned in the posting above: the driver uses PAT support
by default which requires to perform a wbinvd insturction now and then.
This in turn causes high latencies up to 600 microseconds.

regards

Bernhard

[Boomer]

Stuck again. I made the changes to the kernel to get past the GPL error, and I applied the patch from that thread to the driver. Now it compiles but it fails to install with this error:

-> Kernel module load error: insmod: error inserting './usr/src/nv/nvidia.ko':
   -1 Unknown symbol in module
-> Kernel messages:
   lp0: console ready
   NET: Registered protocol family 10
   lo: Disabled Privacy Extensions
   input: Power Button (FF) as /class/input/input4
   ACPI: Power Button (FF) [PWRF]
   input: Power Button (CM) as /class/input/input5
   ACPI: Power Button (CM) [PWRB]
   No dock devices found.
   md: Autodetecting RAID arrays.
   md: autorun ...
   md: ... autorun DONE.
   device-mapper: ioctl: 4.11.0-ioctl (2006-10-12) initialised:
   dm-devel@redhat.com
   device-mapper: multipath: version 1.0.5 loaded
   EXT3 FS on hda6, internal journal
   kjournald starting.  Commit interval 5 seconds
   EXT3 FS on hda8, internal journal
   EXT3-fs: mounted filesystem with ordered data mode.
   Adding 514040k swap on /dev/hda7.  Priority:-1 extents:1 across:514040k
   ip6_tables: (C) 2000-2006 Netfilter Core Team
   ip_tables: (C) 2000-2006 Netfilter Core Team
   input: Analog 2-axis 4-button joystick as /class/input/input6
   ip_tables: (C) 2000-2006 Netfilter Core Team
   nvidia: module license 'NVIDIA' taints kernel.
   nvidia: Unknown symbol pagefault_enable
   nvidia: Unknown symbol pagefault_disable

Any tips?

[JaXXoN]

Originally Posted by Boomer

nvidia: Unknown symbol pagefault_enable
nvidia: Unknown symbol pagefault_disable

There is still some option enabled that makes the pagefault_* functions
compiling into the kernel (i guess these are some kernel debugging features).

Simplest way would be to manually define the symbols similar as explained
in step 5 in the other posting:

PAGEFAULT_ENABLE=`grep "D pagefault_enable" /boot/System.map-2.6.20-rt | colrm 9`
PAGEFAULT_DISABLE=`grep "D pagefault_disable" /boot/System.map-2.6.20-rt | colrm 9`
ld -m elf_i386 --defsym pagefault_enable=0x$PAGEFAULT_ENABLE --defsym pagefault_disable=0x$PAGEFAULT_DISABLE -r -o nvidia.ko nvidia.o nvidia.mod.o

regards

Bernhard

[Boomer]

The 0x parts in the 3rd line, it only worked after I took out the x'es, but then the patched driver installed and it works fine. Thank you for the help!

[JaXXoN]

Originally Posted by Boomer

The 0x parts in the 3rd line, it only worked after I took out the x'es, but then the patched driver installed and it works fine. Thank you for the help!

hmm ... just checked: the pagefault_* functions are of a different symbol
type ("T") than paravirt_ops ("D"), where i applied this trick.

So in your case, $PAGEFAULT_ENABLE and $PAGEFAULT_DISABLE have
been empty lines and removing the x's actually results in a setting of "0" for
these symbols. This will likely cause problems at some point in time.

Please try out the following on:

PAGEFAULT_ENABLE=`grep "T pagefault_enable" /boot/System.map-2.6.20-rt | colrm 9`
PAGEFAULT_DISABLE=`grep "T pagefault_disable" /boot/System.map-2.6.20-rt | colrm 9`
ld -m elf_i386 --defsym pagefault_enable=0x$PAGEFAULT_ENABLE --defsym pagefault_disable=0x$PAGEFAULT_DISABLE -r -o nvidia.ko nvidia.o nvidia.mod.o

And report the values for the symbols:

echo $PAGEFAULT_ENABLE
echo $PAGEFAULT_DISABLE

regards

Bernhard

[Boomer]

I reinstalled the driver and while those defined I got:

echo $PAGEFAULT_ENABLE
c014e75b
echo $PAGEFAULT_DISABLE
c014e74e

[JaXXoN]

Originally Posted by Boomer

I reinstalled the driver and while those defined I got:

echo $PAGEFAULT_ENABLE
c014e75b
echo $PAGEFAULT_DISABLE
c014e74e

These values look reasonable.

regards

Bernhard