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Re: [Xen-devel] Re: [Xen-users] pv_ops kernel and nvidia binary driver

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] pv_ops kernel and nvidia binary driver
From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date: 2009年7月14日 14:17:10 -0700 (PDT)
Cc: Michael Ralston <michael@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: 2009年7月14日 14:18:05 -0700
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Following README i attemped :-

root@SeverUbuntuJaunty:/usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv# make SYSSRC=/usr/src/linux-2.6-xen module
. . . . . . . .
ld -r -m elf_x86_64 --build-id -o /usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv/nvidia.ko /usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv/nvidia.o /usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv/nvidia.mod.o
NVIDIA: left KBUILD.
root@SeverUbuntuJaunty:/usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv# make SYSSRC=/usr/src/linux-2.6-xen module
root@SeverUbuntuJaunty:/usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2/usr/src/nv# ls -l
total 40416
-rw-r--r-- 1 root root 1148 2009年07月15日 01:05 conftest.h
-rw-r--r-- 1 root root 49341 2009年05月27日 13:02 conftest.sh
-rw-r--r-- 1 root root 8517 2009年05月27日 13:02 cpuopsys.h
-rw-r--r-- 1 root root 9077 2009年05月27日 13:02 gcc-version-check.c
-rw-r--r-- 1 root root 1834 2009年05月27日 13:02 makefile
lrwxrwxrwx 1 root root 15 2009年07月15日 01:05 Makefile -> Makefile.kbuild
-rw-r--r-- 1 root root 9174 2009年05月27日 13:02 Makefile.kbuild
-rw-r--r-- 1 root root 3726 2009年05月27日 13:02 Makefile.nvidia
-rw-r--r-- 1 root root 45 2009年07月15日 01:05 Module.markers
-rw-r--r-- 1 root root 72 2009年07月15日 01:05 modules.order
-rw-r--r-- 1 root root 104 2009年07月15日 01:05 Module.symvers
-rw-r--r-- 1 root root 33436 2009年05月27日 13:02 nvacpi.c
-rw-r--r-- 1 root root 178616 2009年07月15日 01:05 nvacpi.o
-rw-r--r-- 1 root root 131773 2009年05月27日 13:02 nv.c
-rw-r--r-- 1 root root 65 2009年07月15日 01:05 nv_compiler.h
-rw-r--r-- 1 root root 23476 2009年05月27日 13:02 nv.h
-rw-r--r-- 1 root root 9980 2009年05月27日 13:02 nv-i2c.c
-rw-r--r-- 1 root root 161448 2009年07月15日 01:05 nv-i2c.o
++++++++++++++++++++++++++++++++++++++
-rw-r--r-- 1 root root 13577047 2009年07月15日 01:05 nvidia.ko
++++++++++++++++++++++++++++++++++++++
-rw-r--r-- 1 root root 5268 2009年07月15日 01:05 nvidia.mod.c
-rw-r--r-- 1 root root 53264 2009年07月15日 01:05 nvidia.mod.o
-rw-r--r-- 1 root root 13525278 2009年07月15日 01:05 nvidia.o
-rw-r--r-- 1 root root 12118040 2009年05月27日 13:02 nv-kernel.o
-rw-r--r-- 1 root root 50152 2009年05月27日 13:02 nv-linux.h
-rw-r--r-- 1 root root 2967 2009年05月27日 13:02 nv-memdbg.h
-rw-r--r-- 1 root root 714 2009年05月27日 13:02 nv-misc.h
-rw-r--r-- 1 root root 403968 2009年07月15日 01:05 nv.o
-rw-r--r-- 1 root root 5072 2009年05月27日 13:02 nvreadme.h
-rw-r--r-- 1 root root 19284 2009年05月27日 13:02 nv-reg.h
-rw-r--r-- 1 root root 12883 2009年05月27日 13:02 nvtypes.h
-rw-r--r-- 1 root root 23062 2009年05月27日 13:02 nv-vm.c
-rw-r--r-- 1 root root 768 2009年05月27日 13:02 nv-vm.h
-rw-r--r-- 1 root root 158584 2009年07月15日 01:05 nv-vm.o
-rw-r--r-- 1 root root 9249 2009年05月27日 13:02 os-agp.c
-rw-r--r-- 1 root root 804 2009年05月27日 13:02 os-agp.h
-rw-r--r-- 1 root root 156520 2009年07月15日 01:05 os-agp.o
-rw-r--r-- 1 root root 31069 2009年05月27日 13:02 os-interface.c
-rw-r--r-- 1 root root 8785 2009年05月27日 13:02 os-interface.h
-rw-r--r-- 1 root root 212096 2009年07月15日 01:05 os-interface.o
-rw-r--r-- 1 root root 2395 2009年05月27日 13:02 os-registry.c
-rw-r--r-- 1 root root 160400 2009年07月15日 01:05 os-registry.o
-rw-r--r-- 1 root root 157 2009年07月15日 01:05 patches.h

Boris.

--- On Tue, 7/14/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] pv_ops kernel and nvidia binary driver
To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Cc: "Michael Ralston" <michael@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
Date: Tuesday, July 14, 2009, 4:57 PM

By running "sh NVIDIA-Linux-x86_64-185.18.14-pkg2.run -x"
i was able to get some extraction in folder bellow. It's hard for me to decide could it be patched similar schema in http://fluxcoil.net/doku.php/xen/docs
for xenified kernel or no.
Kernels 2.6.29.4 , 2.6.30.1 xenified via rebased patch set from Andy
do contain patched driver for GeForce 8000 series . It just works fine.

Nvidia driver extraction :-

root@SeverUbuntuJaunty:/usr/src/NVIDIA-Linux-x86_64-185.18.14-pkg2# ls -CR
.:
LICENSE nvidia-installer pkg-history.txt usr

./usr:
bin include lib lib32 share src X11R6

./usr/bin:
makeself.sh nvidia-bug-report.sh nvidia-smi tls_test
mkprecompiled nvidia-settings nvidia-xconfig tls_test_dso.so

./usr/include:
cuda GL vdpau

./usr/include/cuda:
cudaGL.h cuda.h

./usr/include/GL:
glext.h gl.h glxext.h glx.h

./usr/include/vdpau:
vdpau.h vdpau_x11.h

./usr/lib:
libcuda.so.185.18.14 libGL.so.185.18.14 libvdpau_nvidia.so.185.18.14 tls
libGLcore.so.185.18.14 libnvidia-cfg.so.185.18.14 libvdpau.so.185.18.14
libGL.la libnvidia-tls.so.185.18.14 libvdpau_trace.so.185.18.14

./usr/lib/tls:
libnvidia-tls.so.185.18.14

./usr/lib32:
libcuda.so.185.18.14 libGL.la libnvidia-tls.so.185.18.14 libvdpau.so.185.18.14 tls
libGLcore.so.185.18.14 libGL.so.185.18.14 libvdpau_nvidia.so.185.18.14 libvdpau_trace.so.185.18.14

./usr/lib32/tls:
libnvidia-tls.so.185.18.14

./usr/share:
applications doc man pixmaps

./usr/share/applications:
nvidia-settings.desktop

./usr/src:
nv

./usr/src/nv:
conftest.sh Makefile.kbuild nv.h nv-memdbg.h nvtypes.h os-agp.h README cpuopsys.h Makefile.nvidia nv-i2c.c nv-misc.h nv-vm.c os-interface.c rmretval.h gcc-version-check.c nvacpi.c nv-kernel.o nvreadme.h nv-vm.h os-interface.h
makefile nv.c nv-linux.h nv-reg.h os-agp.c os-registry.c

./usr/X11R6:
lib

./usr/X11R6/lib:
libXvMCNVIDIA.a libXvMCNVIDIA.so.185.18.14 modules

./usr/X11R6/lib/modules:
drivers extensions libnvidia-wfb.so.185.18.14

./usr/X11R6/lib/modules/drivers:
nvidia_drv.so

./usr/X11R6/lib/modules/extensions:
libglx.so.185.18.14

Boris.

--- On Tue, 7/14/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] pv_ops kernel and nvidia binary driver
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: xen-users@xxxxxxxxxxxxxxxxxxx, "Michael Ralston" <michael@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Date: Tuesday, July 14, 2009, 3:52 PM

On 07/11/09 23:03, Boris Derzhavets wrote:
> A while ago Jeremy responded the same question.
> Per Jeremy:- unmodified binary Nvidia driver would crash under Xen.
> Modified driver should in the pvops kernel.
>
> It's also my major concern as well.
>
> Boris
>
> --- On *Sun, 7/12/09, Michael Ralston /<michael@xxxxxxxxxxxxx>/* wrote:
>
>
> From: Michael Ralston <michael@xxxxxxxxxxxxx>
> Subject: [Xen-users] pv_ops kernel and nvidia binary driver
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Date: Sunday, July 12, 2009, 1:48 AM
>
> Just wondering what it will take to get the nvidia binary driver
> working on a pv_ops kernel.
>
> It makes it difficult to debug without the source to the nvidia
> driver, but I think it should be possible to get it to work without
> changing the binary driver. If the dom0 kernel had access to all the
> resources that a bare metal kernel did, then it should work right?
>

The problem comes down to whether the nvidia driver assumes the kernel's
(pseudo-)physical addresses are really machine physical or not. If it
doesn't do the appropriate conversions between physical and machine
addresses using the standard Linux DMA API (or similar), then it will
end up misprogramming the hardware and reading/writing random memory.
There's not a lot we can do about that if that happens within the binary
part of the nvidia driver. If the binary code calls out to the
source-available parts of the driver to do those conversions, then it
would be possible to fix there.

There are other potential pitfalls the nvidia driver could be falling
into, but that's the most likely.

J


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