kvm-devel

[kvm-devel] compile error

[Zhao, Y. <yun...@in...>]

I met an error when i build latest KVM on rhel5.

Seems asm/cmpxchg.h is not in the kernel before 2.6.22.

How can I fix the issue?

=20

=20

make -C kernel

make[1]: Entering directory `/tmp/tmp/kvm-userspace/kernel'

make -C /lib/modules/2.6.18-8.el5/build M=3D`pwd` "$@"

make[2]: Entering directory `/usr/src/kernels/2.6.18-8.el5-x86_64'

  CC [M]  /tmp/tmp/kvm-userspace/kernel/mmu.o

/tmp/tmp/kvm-userspace/kernel/mmu.c:25:25: error: asm/cmpxchg.h: No such
file or directory

make[3]: *** [/tmp/tmp/kvm-userspace/kernel/mmu.o] Error 1

make[2]: *** [_module_/tmp/tmp/kvm-userspace/kernel] Error 2

make[2]: Leaving directory `/usr/src/kernels/2.6.18-8.el5-x86_64'

make[1]: *** [all] Error 2

make[1]: Leaving directory `/tmp/tmp/kvm-userspace/kernel'

make: *** [kernel] Error 2

=20

thanks

Yunfeng

[kvm-devel] compile error

[Zhao, Y. <yun...@in...>]

Today's tip fails to compile with following error messages:


/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-use
rspace/qemu/../libkvm  -DCONFIG_X86 -Wall -O2 -g -fno-strict-aliasing
-I.
-I/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-u
serspace/qemu -MMD -MP -D_GNU_SOURCE -D_FILE_OFFSET_BITS=3D64
-D_LARGEFILE_SOURCE
-I/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-u
serspace/qemu/slirp -DQEMU_IMG    -c -o qemu-img-block-raw-posix.o
block-raw-posix.c
In file included from /usr/include/linux/cdrom.h:14,
                 from block-raw-posix.c:52:
/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-use
rspace/qemu/../libkvm/asm/byteorder.h:9: error: syntax error before
"__u64"
/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-use
rspace/qemu/../libkvm/asm/byteorder.h:15: error: syntax error before
"__u32"
make[1]: *** [qemu-img-block-raw-posix.o] Error 1
make[1]: Leaving directory
`/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080109010121401/kvm-us
erspace/qemu'
make: *** [qemu] Error 2

Re: [kvm-devel] compile error

[Avi K. <av...@qu...>]

Zhao, Yunfeng wrote:
> Today's tip fails to compile with following error messages:
>   

[...]

Fixed now.  Hollis, I had to revert your asm symlink patch to fix this, 
so we need to find an alternative solution to that problem.

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

Re: [kvm-devel] compile error

[Hollis B. <ho...@us...>]

On Wed, 2008-01-09 at 10:39 +0200, Avi Kivity wrote:
> Zhao, Yunfeng wrote:
> > Today's tip fails to compile with following error messages:
> >   
> 
> [...]
> 
> Fixed now.  Hollis, I had to revert your asm symlink patch to fix this, 
> so we need to find an alternative solution to that problem.

qemu ends up including <asm/byteorder.h> from /usr.

libkvm, on the other hand, ends up including <asm/kvm.h> from the target
kernel tree.

Since the two components are meaning completely different things when
referring to the "asm" directory, we should use different include paths.
The best long-term solution would probably be to remove "-I
$(KERNELDIR)/include" from libkvm, and instead build against a copy of
the KVM headers (maybe copied over with that "make sync" target?).

Avi, I think you're responsible for all the build directory munging we
do currently; what do you think about that?

-- 
Hollis Blanchard
IBM Linux Technology Center

Re: [kvm-devel] compile error

[Avi K. <av...@qu...>]

Hollis Blanchard wrote:
> On Wed, 2008-01-09 at 10:39 +0200, Avi Kivity wrote:
>   
>> Zhao, Yunfeng wrote:
>>     
>>> Today's tip fails to compile with following error messages:
>>>   
>>>       
>> [...]
>>
>> Fixed now.  Hollis, I had to revert your asm symlink patch to fix this, 
>> so we need to find an alternative solution to that problem.
>>     
>
> qemu ends up including <asm/byteorder.h> from /usr.
>
> libkvm, on the other hand, ends up including <asm/kvm.h> from the target
> kernel tree.
>
> Since the two components are meaning completely different things when
> referring to the "asm" directory, we should use different include paths.
> The best long-term solution would probably be to remove "-I
> $(KERNELDIR)/include" from libkvm, and instead build against a copy of
> the KVM headers (maybe copied over with that "make sync" target?).
>
> Avi, I think you're responsible for all the build directory munging we
> do currently; what do you think about that?
>   

I agree.

The traditional way is to build against installed headers; but we don't 
want to do that at this stage.  So your suggestion is the closest 
thing.  But we should make the sync target implicit so users don't have 
that additional step.

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

[kvm-devel] compile error

[Zhao, Y. <yun...@in...>]

Today's IA32e KVM build fails, here is the error message:

libqemu.a(kvm-tpr-opt.o): In function `enable_vapic':

/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-use
rspace/qemu/kvm-tpr-opt.c:232: undefined reference to `kvm_enable_vapic'

libqemu.a(kvm-tpr-opt.o): In function `kvm_tpr_vcpu_start':

/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-use
rspace/qemu/kvm-tpr-opt.c:302: undefined reference to
`kvm_enable_tpr_access_reporting'

collect2: ld returned 1 exit status

make[2]: *** [qemu-system-x86_64] Error 1

make[2]: Leaving directory
`/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-us
erspace/qemu/x86_64-softmmu'

make[1]: *** [subdir-x86_64-softmmu] Error 2

make[1]: Leaving directory
`/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-us
erspace/qemu'

make: *** [qemu] Error 2

Re: [kvm-devel] compile error

[Avi K. <av...@qu...>]

Zhao, Yunfeng wrote:
>
> Today’s IA32e KVM build fails, here is the error message:
>
> libqemu.a(kvm-tpr-opt.o): In function `enable_vapic':
>
> /workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-userspace/qemu/kvm-tpr-opt.c:232: 
> undefined reference to `kvm_enable_vapic'
>
> libqemu.a(kvm-tpr-opt.o): In function `kvm_tpr_vcpu_start':
>
> /workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-userspace/qemu/kvm-tpr-opt.c:302: 
> undefined reference to `kvm_enable_tpr_access_reporting'
>
> collect2: ld returned 1 exit status
>
> make[2]: *** [qemu-system-x86_64] Error 1
>
> make[2]: Leaving directory 
> `/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-userspace/qemu/x86_64-softmmu'
>
> make[1]: *** [subdir-x86_64-softmmu] Error 2
>
> make[1]: Leaving directory 
> `/workspace/ia32e/nightly/kvm-master-2.6.22-rc4-20080218000132559/kvm-userspace/qemu'
>
> make: *** [qemu] Error 2
>

I can't reproduce this with the last snapshot.  What commits hashes are 
you using?

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

Re: [kvm-devel] compile error

[Zhao, Y. <yun...@in...>]

I am using TIP.
I found that if try to compile twice, the first time has no problem but
the second time (make clean&&./configure&&make) will meet the error.

>>
>
>I can't reproduce this with the last snapshot.  What commits hashes are
>you using?
>
>--
>Do not meddle in the internals of kernels, for they are subtle and
quick to panic.

Re: [kvm-devel] compile error

[Avi K. <av...@qu...>]

Zhao, Yunfeng wrote:
> I am using TIP.
> I found that if try to compile twice, the first time has no problem but
> the second time (make clean&&./configure&&make) will meet the error.
>
>   

Yes, 'make clean' was too eager.  Fixed.

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

Re: [kvm-devel] compile error

[Avi K. <av...@qu...>]

Zhao, Yunfeng wrote:
>
> I met an error when i build latest KVM on rhel5.
>
> Seems asm/cmpxchg.h is not in the kernel before 2.6.22.
>
> How can I fix the issue?
>
>  
>

Add a kernel/include/linux/asm/cmpxchg.h, which defines set_64bit() for
both i386 and x86_64.



-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.