Unable to unload kvm-intel module

Unable to unload kvm-intel module

[AP]

I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
kernel). The kvm.ko and kvm-intel.ko build and insmod without any
issues. However I am able to unload the kvm-intel module. Here is the
lsmod listing:

kvm_intel             135653  0 [permanent]
kvm                   381130  1 kvm_intel,[permanent]

This is the error I get when I try to unload the module:

ERROR: Removing 'kvm_intel': Device or resource busy

Do I need to do anything special during building for
CONFIG_MODULE_UNLOAD to take effect?

PS: I am able to rmmod the kvm module that is packages with the Ubuntu
11.04 kernel.

Thanks,
AP

Re: Unable to unload kvm-intel module

[Avi Kivity]

On 06/11/2011 03:02 AM, AP wrote:
> I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
> kernel).

Why?

> The kvm.ko and kvm-intel.ko build and insmod without any
> issues. However I am able to unload the kvm-intel module. Here is the
> lsmod listing:
>
> kvm_intel             135653  0 [permanent]
> kvm                   381130  1 kvm_intel,[permanent]
>
> This is the error I get when I try to unload the module:
>
> ERROR: Removing 'kvm_intel': Device or resource busy
>
> Do I need to do anything special during building for
> CONFIG_MODULE_UNLOAD to take effect?
>

No, as far as I know it should just work, and always has for me.  But it 
does say [permanent].  Any clue why in dmesg?

> PS: I am able to rmmod the kvm module that is packages with the Ubuntu
> 11.04 kernel.

Does it say [permanent] with these modules?

-- 
error compiling committee.c: too many arguments to function

Re: Unable to unload kvm-intel module

[AP]

On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity <avi@redhat.com> wrote:
> On 06/11/2011 03:02 AM, AP wrote:
>>
>> I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>> kernel).
>
> Why?

I did not want move to the new kernel from kvm.git. I just wanted to
upgrade to the latest kvm module for some development. Is there a way
to use the kvm.git tree and only build and load kvm?

>> The kvm.ko and kvm-intel.ko build and insmod without any
>> issues. However I am able to unload the kvm-intel module. Here is the
>> lsmod listing:
>>
>> kvm_intel             135653  0 [permanent]
>> kvm                   381130  1 kvm_intel,[permanent]
>>
>> This is the error I get when I try to unload the module:
>>
>> ERROR: Removing 'kvm_intel': Device or resource busy
>>
>> Do I need to do anything special during building for
>> CONFIG_MODULE_UNLOAD to take effect?
>>
>
> No, as far as I know it should just work, and always has for me.  But it
> does say [permanent].  Any clue why in dmesg?

The only thing I see in dmesg is:
loaded kvm module (v2.6.39-8627-g2c2b5df)

>> PS: I am able to rmmod the kvm module that is packages with the Ubuntu
>> 11.04 kernel.
>
> Does it say [permanent] with these modules?

No it does not.
kvm_intel              56851  0
kvm                   367707  1 kvm_intel

> --
> error compiling committee.c: too many arguments to function
>
>

Re: Unable to unload kvm-intel module

[Jan Kiszka]

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On 2011-06-13 19:11, AP wrote:
> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity <avi@redhat.com> wrote:
>> On 06/11/2011 03:02 AM, AP wrote:
>>>
>>> I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>> kernel).
>>
>> Why?
> 
> I did not want move to the new kernel from kvm.git. I just wanted to
> upgrade to the latest kvm module for some development. Is there a way
> to use the kvm.git tree and only build and load kvm?

You want to use the kvm-kmod package, e.g.

http://sourceforge.net/projects/kvm/files/kvm-kmod/2.6.39/kvm-kmod-2.6.39.tar.bz2/download

Jan


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Re: Unable to unload kvm-intel module

[Avi Kivity]

On 06/13/2011 08:11 PM, AP wrote:
> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
> >  On 06/11/2011 03:02 AM, AP wrote:
> >>
> >>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
> >>  kernel).
> >
> >  Why?
>
> I did not want move to the new kernel from kvm.git.

I generally find that it works well, though I only run it on servers.

> I just wanted to
> upgrade to the latest kvm module for some development. Is there a way
> to use the kvm.git tree and only build and load kvm?

kvm-kmod.

> >>  The kvm.ko and kvm-intel.ko build and insmod without any
> >>  issues. However I am able to unload the kvm-intel module. Here is the
> >>  lsmod listing:
> >>
> >>  kvm_intel             135653  0 [permanent]
> >>  kvm                   381130  1 kvm_intel,[permanent]
> >>
> >>  This is the error I get when I try to unload the module:
> >>
> >>  ERROR: Removing 'kvm_intel': Device or resource busy
> >>
> >>  Do I need to do anything special during building for
> >>  CONFIG_MODULE_UNLOAD to take effect?
> >>
> >
> >  No, as far as I know it should just work, and always has for me.  But it
> >  does say [permanent].  Any clue why in dmesg?
>
> The only thing I see in dmesg is:
> loaded kvm module (v2.6.39-8627-g2c2b5df)

         if (mod->init != NULL && mod->exit == NULL) {
                 printed_something = 1;
                 seq_printf(m, "[permanent],");
         }

I don't recall anything in kvm-kmod playing with these, so it's a 
mystery why this happens.

kvm.ko doesn't have an init or exit function.  kvm-intel.ko has both.  
Wierd.

-- 
error compiling committee.c: too many arguments to function

Re: Unable to unload kvm-intel module

[AP]

On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
> On 06/13/2011 08:11 PM, AP wrote:
>>
>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>> >  On 06/11/2011 03:02 AM, AP wrote:
>> >>
>> >>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>> >>  kernel).
>> >
>> >  Why?
>>
>> I did not want move to the new kernel from kvm.git.
>
> I generally find that it works well, though I only run it on servers.
>
>> I just wanted to
>> upgrade to the latest kvm module for some development. Is there a way
>> to use the kvm.git tree and only build and load kvm?
>
> kvm-kmod.

That is what I am using and running in to the permanent module issue.

>> >>  The kvm.ko and kvm-intel.ko build and insmod without any
>> >>  issues. However I am able to unload the kvm-intel module. Here is the
>> >>  lsmod listing:
>> >>
>> >>  kvm_intel             135653  0 [permanent]
>> >>  kvm                   381130  1 kvm_intel,[permanent]
>> >>
>> >>  This is the error I get when I try to unload the module:
>> >>
>> >>  ERROR: Removing 'kvm_intel': Device or resource busy
>> >>
>> >>  Do I need to do anything special during building for
>> >>  CONFIG_MODULE_UNLOAD to take effect?
>> >>
>> >
>> >  No, as far as I know it should just work, and always has for me.  But
>> > it
>> >  does say [permanent].  Any clue why in dmesg?
>>
>> The only thing I see in dmesg is:
>> loaded kvm module (v2.6.39-8627-g2c2b5df)
>
>        if (mod->init != NULL && mod->exit == NULL) {
>                printed_something = 1;
>                seq_printf(m, "[permanent],");
>        }
>
> I don't recall anything in kvm-kmod playing with these, so it's a mystery
> why this happens.
>
> kvm.ko doesn't have an init or exit function.  kvm-intel.ko has both.
>  Wierd.

When I look at kvm.mod.c and kvm-intel.mod.c which I think are built
on the fly during compile time, I see the following:

struct module __this_module
__attribute__((section(".gnu.linkonce.this_module"))) = {
 .name = KBUILD_MODNAME,
 .init = init_module,
#ifdef CONFIG_MODULE_UNLOAD
 .exit = cleanup_module,
#endif
 .arch = MODULE_ARCH_INIT,
};

My fear is that for some reason CONFIG_MODULE_UNLOAD is not getting
set and hence .exit fields are not being compiled. Though I am not
completely sure of this.

AP

Re: Unable to unload kvm-intel module

[Jan Kiszka]

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On 2011-06-14 20:30, AP wrote:
> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>> On 06/13/2011 08:11 PM, AP wrote:
>>>
>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>
>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>  kernel).
>>>>
>>>>  Why?
>>>
>>> I did not want move to the new kernel from kvm.git.
>>
>> I generally find that it works well, though I only run it on servers.
>>
>>> I just wanted to
>>> upgrade to the latest kvm module for some development. Is there a way
>>> to use the kvm.git tree and only build and load kvm?
>>
>> kvm-kmod.
> 
> That is what I am using and running in to the permanent module issue.

What version of kvm-kmod? What are your steps to reproduce?

I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
it's loading&unloading fine.

Jan


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Re: Unable to unload kvm-intel module

[AP]

On Tue, Jun 14, 2011 at 1:05 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
> On 2011-06-14 20:30, AP wrote:
>> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>>> On 06/13/2011 08:11 PM, AP wrote:
>>>>
>>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>>
>>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>>  kernel).
>>>>>
>>>>>  Why?
>>>>
>>>> I did not want move to the new kernel from kvm.git.
>>>
>>> I generally find that it works well, though I only run it on servers.
>>>
>>>> I just wanted to
>>>> upgrade to the latest kvm module for some development. Is there a way
>>>> to use the kvm.git tree and only build and load kvm?
>>>
>>> kvm-kmod.
>>
>> That is what I am using and running in to the permanent module issue.
>
> What version of kvm-kmod? What are your steps to reproduce?
>
> I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
> it's loading&unloading fine.

I am following the instruction that I found here under "building an
external module with older kernels":
http://www.linux-kvm.org/page/Code

I ran:
git clone git://git.kernel.org/pub/scm/virt/kvm/kvm-kmod.git
cd kvm-kmod
git submodule update --init
./configure --kerneldir=/lib/modules/2.6.38-8-generic/build
make sync
make

I am at:
commit bed5dfdeb11cf3a749396e4c353018bae5aff66f
Author: Jan Kiszka <jan.kiszka@siemens.com>
Date:   Wed Jun 1 09:08:49 2011 +0200

    Update source link

    Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

The kvm source comes from the kernel tree that is part of kvm-kmod i.e
in the linux-2.6 directory.

Thanks,
AP

Re: Unable to unload kvm-intel module

[Jan Kiszka]

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On 2011-06-14 23:10, AP wrote:
> On Tue, Jun 14, 2011 at 1:05 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>> On 2011-06-14 20:30, AP wrote:
>>> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>>>> On 06/13/2011 08:11 PM, AP wrote:
>>>>>
>>>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>>>
>>>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>>>  kernel).
>>>>>>
>>>>>>  Why?
>>>>>
>>>>> I did not want move to the new kernel from kvm.git.
>>>>
>>>> I generally find that it works well, though I only run it on servers.
>>>>
>>>>> I just wanted to
>>>>> upgrade to the latest kvm module for some development. Is there a way
>>>>> to use the kvm.git tree and only build and load kvm?
>>>>
>>>> kvm-kmod.
>>>
>>> That is what I am using and running in to the permanent module issue.
>>
>> What version of kvm-kmod? What are your steps to reproduce?
>>
>> I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
>> it's loading&unloading fine.
> 
> I am following the instruction that I found here under "building an
> external module with older kernels":
> http://www.linux-kvm.org/page/Code
> 
> I ran:
> git clone git://git.kernel.org/pub/scm/virt/kvm/kvm-kmod.git
> cd kvm-kmod
> git submodule update --init
> ./configure --kerneldir=/lib/modules/2.6.38-8-generic/build
> make sync
> make
> 
> I am at:
> commit bed5dfdeb11cf3a749396e4c353018bae5aff66f
> Author: Jan Kiszka <jan.kiszka@siemens.com>
> Date:   Wed Jun 1 09:08:49 2011 +0200
> 
>     Update source link
> 
>     Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> 
> The kvm source comes from the kernel tree that is part of kvm-kmod i.e
> in the linux-2.6 directory.
> 
> Thanks,
> AP

Still unreproducible here - and unexplainable. Can you debug your setup
further, maybe following the suspect you had regarding CONFIG_MODULE_UNLOAD?

Jan


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Re: Unable to unload kvm-intel module

[AP]

On Tue, Jun 14, 2011 at 11:37 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
> On 2011-06-14 23:10, AP wrote:
>> On Tue, Jun 14, 2011 at 1:05 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>>> On 2011-06-14 20:30, AP wrote:
>>>> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>>>>> On 06/13/2011 08:11 PM, AP wrote:
>>>>>>
>>>>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>>>>
>>>>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>>>>  kernel).
>>>>>>>
>>>>>>>  Why?
>>>>>>
>>>>>> I did not want move to the new kernel from kvm.git.
>>>>>
>>>>> I generally find that it works well, though I only run it on servers.
>>>>>
>>>>>> I just wanted to
>>>>>> upgrade to the latest kvm module for some development. Is there a way
>>>>>> to use the kvm.git tree and only build and load kvm?
>>>>>
>>>>> kvm-kmod.
>>>>
>>>> That is what I am using and running in to the permanent module issue.
>>>
>>> What version of kvm-kmod? What are your steps to reproduce?
>>>
>>> I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
>>> it's loading&unloading fine.
>>
>> I am following the instruction that I found here under "building an
>> external module with older kernels":
>> http://www.linux-kvm.org/page/Code
>>
>> I ran:
>> git clone git://git.kernel.org/pub/scm/virt/kvm/kvm-kmod.git
>> cd kvm-kmod
>> git submodule update --init
>> ./configure --kerneldir=/lib/modules/2.6.38-8-generic/build
>> make sync
>> make
>>
>> I am at:
>> commit bed5dfdeb11cf3a749396e4c353018bae5aff66f
>> Author: Jan Kiszka <jan.kiszka@siemens.com>
>> Date:   Wed Jun 1 09:08:49 2011 +0200
>>
>>     Update source link
>>
>>     Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>
>> The kvm source comes from the kernel tree that is part of kvm-kmod i.e
>> in the linux-2.6 directory.
>>
>> Thanks,
>> AP
>
> Still unreproducible here - and unexplainable. Can you debug your setup
> further, maybe following the suspect you had regarding CONFIG_MODULE_UNLOAD?

I am not able to figure out how kvm.mod.c and kvm-intel.mod.c get
created at compile time. Could you please give me a pointer to where
that happens?

Thanks,
AP

Re: Unable to unload kvm-intel module

[Jan Kiszka]

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On 2011-06-17 00:10, AP wrote:
> On Tue, Jun 14, 2011 at 11:37 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>> On 2011-06-14 23:10, AP wrote:
>>> On Tue, Jun 14, 2011 at 1:05 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>>>> On 2011-06-14 20:30, AP wrote:
>>>>> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>>>>>> On 06/13/2011 08:11 PM, AP wrote:
>>>>>>>
>>>>>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>>>>>
>>>>>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>>>>>  kernel).
>>>>>>>>
>>>>>>>>  Why?
>>>>>>>
>>>>>>> I did not want move to the new kernel from kvm.git.
>>>>>>
>>>>>> I generally find that it works well, though I only run it on servers.
>>>>>>
>>>>>>> I just wanted to
>>>>>>> upgrade to the latest kvm module for some development. Is there a way
>>>>>>> to use the kvm.git tree and only build and load kvm?
>>>>>>
>>>>>> kvm-kmod.
>>>>>
>>>>> That is what I am using and running in to the permanent module issue.
>>>>
>>>> What version of kvm-kmod? What are your steps to reproduce?
>>>>
>>>> I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
>>>> it's loading&unloading fine.
>>>
>>> I am following the instruction that I found here under "building an
>>> external module with older kernels":
>>> http://www.linux-kvm.org/page/Code
>>>
>>> I ran:
>>> git clone git://git.kernel.org/pub/scm/virt/kvm/kvm-kmod.git
>>> cd kvm-kmod
>>> git submodule update --init
>>> ./configure --kerneldir=/lib/modules/2.6.38-8-generic/build
>>> make sync
>>> make
>>>
>>> I am at:
>>> commit bed5dfdeb11cf3a749396e4c353018bae5aff66f
>>> Author: Jan Kiszka <jan.kiszka@siemens.com>
>>> Date:   Wed Jun 1 09:08:49 2011 +0200
>>>
>>>     Update source link
>>>
>>>     Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>>
>>> The kvm source comes from the kernel tree that is part of kvm-kmod i.e
>>> in the linux-2.6 directory.
>>>
>>> Thanks,
>>> AP
>>
>> Still unreproducible here - and unexplainable. Can you debug your setup
>> further, maybe following the suspect you had regarding CONFIG_MODULE_UNLOAD?
> 
> I am not able to figure out how kvm.mod.c and kvm-intel.mod.c get
> created at compile time. Could you please give me a pointer to where
> that happens?

That's embedded in the standard build process of the kernel. If Ubuntu
didn't break it, the config should remain stable between primary source
files (as provided by kvm-kmod) and the generated ones (like *.mod.c).
So let's first check if the config used is consistent by adding

#ifndef CONFIG_MODULE_UNLOAD
#warning CONFIG_MODULE_UNLOAD missing!
#endif

to the end of x86/vmx.c (do not re-run 'make sync' afterward).

Jan


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Re: Unable to unload kvm-intel module

[AP]

On Fri, Jun 17, 2011 at 12:18 AM, Jan Kiszka <jan.kiszka@web.de> wrote:
> On 2011-06-17 00:10, AP wrote:
>> On Tue, Jun 14, 2011 at 11:37 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>>> On 2011-06-14 23:10, AP wrote:
>>>> On Tue, Jun 14, 2011 at 1:05 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>>>>> On 2011-06-14 20:30, AP wrote:
>>>>>> On Tue, Jun 14, 2011 at 1:32 AM, Avi Kivity <avi@redhat.com> wrote:
>>>>>>> On 06/13/2011 08:11 PM, AP wrote:
>>>>>>>>
>>>>>>>> On Sun, Jun 12, 2011 at 8:35 AM, Avi Kivity<avi@redhat.com>  wrote:
>>>>>>>>>  On 06/11/2011 03:02 AM, AP wrote:
>>>>>>>>>>
>>>>>>>>>>  I am building kvm as an external module against 2.6.38-8 (Ubuntu 11.04
>>>>>>>>>>  kernel).
>>>>>>>>>
>>>>>>>>>  Why?
>>>>>>>>
>>>>>>>> I did not want move to the new kernel from kvm.git.
>>>>>>>
>>>>>>> I generally find that it works well, though I only run it on servers.
>>>>>>>
>>>>>>>> I just wanted to
>>>>>>>> upgrade to the latest kvm module for some development. Is there a way
>>>>>>>> to use the kvm.git tree and only build and load kvm?
>>>>>>>
>>>>>>> kvm-kmod.
>>>>>>
>>>>>> That is what I am using and running in to the permanent module issue.
>>>>>
>>>>> What version of kvm-kmod? What are your steps to reproduce?
>>>>>
>>>>> I've just checked the kvm-kmod-2.6.39 release in an Ubuntu 11.4 VM, and
>>>>> it's loading&unloading fine.
>>>>
>>>> I am following the instruction that I found here under "building an
>>>> external module with older kernels":
>>>> http://www.linux-kvm.org/page/Code
>>>>
>>>> I ran:
>>>> git clone git://git.kernel.org/pub/scm/virt/kvm/kvm-kmod.git
>>>> cd kvm-kmod
>>>> git submodule update --init
>>>> ./configure --kerneldir=/lib/modules/2.6.38-8-generic/build
>>>> make sync
>>>> make
>>>>
>>>> I am at:
>>>> commit bed5dfdeb11cf3a749396e4c353018bae5aff66f
>>>> Author: Jan Kiszka <jan.kiszka@siemens.com>
>>>> Date:   Wed Jun 1 09:08:49 2011 +0200
>>>>
>>>>     Update source link
>>>>
>>>>     Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>>>
>>>> The kvm source comes from the kernel tree that is part of kvm-kmod i.e
>>>> in the linux-2.6 directory.
>>>>
>>>> Thanks,
>>>> AP
>>>
>>> Still unreproducible here - and unexplainable. Can you debug your setup
>>> further, maybe following the suspect you had regarding CONFIG_MODULE_UNLOAD?
>>
>> I am not able to figure out how kvm.mod.c and kvm-intel.mod.c get
>> created at compile time. Could you please give me a pointer to where
>> that happens?
>
> That's embedded in the standard build process of the kernel. If Ubuntu
> didn't break it, the config should remain stable between primary source
> files (as provided by kvm-kmod) and the generated ones (like *.mod.c).
> So let's first check if the config used is consistent by adding
>
> #ifndef CONFIG_MODULE_UNLOAD
> #warning CONFIG_MODULE_UNLOAD missing!
> #endif
>
> to the end of x86/vmx.c (do not re-run 'make sync' afterward).

I tired that and it did not give me any warning. Here is the compilation output:

make -C /lib/modules/2.6.38-8-generic/build M=`pwd` \
		LINUXINCLUDE="-I`pwd`/include -Iinclude \
			 -Iarch/x86/include \
			-I`pwd`/include-compat -I`pwd`/x86 \
			-include  include/generated/autoconf.h \
			-include `pwd`/x86/external-module-compat.h" \
		"$@"
make[1]: Entering directory `/usr/src/linux-headers-2.6.38-8-generic'
  CC [M]  /home/ap/dev/kvm/kvm-kmod/x86/vmx.o
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.o
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.o
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.o
  Building modules, stage 2.
  MODPOST 3 modules
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.ko
  CC      /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.mod.o
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.ko
  LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.ko
make[1]: Leaving directory `/usr/src/linux-headers-2.6.38-8-generic'

My other question is that I see "module_init(vmx_init)" and
"module_exit(vmx_exit)" but nothing similar for kvm. Is that ok?

Thanks,
AP

Re: Unable to unload kvm-intel module

[Jan Kiszka]

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On 2011-06-17 20:04, AP wrote:
> I tired that and it did not give me any warning. Here is the compilation output:
> 
> make -C /lib/modules/2.6.38-8-generic/build M=`pwd` \
> 		LINUXINCLUDE="-I`pwd`/include -Iinclude \
> 			 -Iarch/x86/include \
> 			-I`pwd`/include-compat -I`pwd`/x86 \
> 			-include  include/generated/autoconf.h \
> 			-include `pwd`/x86/external-module-compat.h" \
> 		"$@"
> make[1]: Entering directory `/usr/src/linux-headers-2.6.38-8-generic'
>   CC [M]  /home/ap/dev/kvm/kvm-kmod/x86/vmx.o
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.o
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.o
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.o
>   Building modules, stage 2.
>   MODPOST 3 modules
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.ko
>   CC      /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.mod.o
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.ko
>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.ko
> make[1]: Leaving directory `/usr/src/linux-headers-2.6.38-8-generic'

Do you install the built modules and then do a modprobe, or how do you
load them? Also try via

    insmod /home/ap/dev/kvm/kvm-kmod/x86/kvm.ko

I don't know. Something must be broken with your Ubuntu installation.

> 
> My other question is that I see "module_init(vmx_init)" and
> "module_exit(vmx_exit)" but nothing similar for kvm. Is that ok?

Yes, kvm.ko is just a library to kvm-intel/amd.ko. Those modules drive
init and cleanup.

Jan


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Re: Unable to unload kvm-intel module

[AP]

On Sun, Jun 19, 2011 at 2:06 AM, Jan Kiszka <jan.kiszka@web.de> wrote:
> On 2011-06-17 20:04, AP wrote:
>> I tired that and it did not give me any warning. Here is the compilation output:
>>
>> make -C /lib/modules/2.6.38-8-generic/build M=`pwd` \
>>               LINUXINCLUDE="-I`pwd`/include -Iinclude \
>>                        -Iarch/x86/include \
>>                       -I`pwd`/include-compat -I`pwd`/x86 \
>>                       -include  include/generated/autoconf.h \
>>                       -include `pwd`/x86/external-module-compat.h" \
>>               "$@"
>> make[1]: Entering directory `/usr/src/linux-headers-2.6.38-8-generic'
>>   CC [M]  /home/ap/dev/kvm/kvm-kmod/x86/vmx.o
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.o
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.o
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.o
>>   Building modules, stage 2.
>>   MODPOST 3 modules
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-amd.ko
>>   CC      /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.mod.o
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm-intel.ko
>>   LD [M]  /home/ap/dev/kvm/kvm-kmod/x86/kvm.ko
>> make[1]: Leaving directory `/usr/src/linux-headers-2.6.38-8-generic'
>
> Do you install the built modules and then do a modprobe, or how do you
> load them? Also try via
>
>    insmod /home/ap/dev/kvm/kvm-kmod/x86/kvm.ko

I don't modprobe them. I use the insmod command above after I rmmod
the existing drivers.

I tried doing a "make install" and modprob. No luck!

> I don't know. Something must be broken with your Ubuntu installation.

This is looking very likely at this point. Thanks for all the help.

AP