Re: compiling with kvm-kmod

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2014-01-23 17:34, Jonas Pfoh wrote:
> Hello,
> 
> I am currently working on a project involving KVM and have been making use Jan's kvm-kmod repository.  I receive the below error when I attempt to compile with the most recent version.  My question is simply if this is something anyone is aware of or has any suggestions for before I go poking around?  
> 
> I am compiling against a 3.13.0 mainline vanilla kernel and am using the master branch (3d923a3) of Jan's kvm-kmod repo which seems to be syncing from kvm commit 7650b68.
> 
> Thanks and regards,
> Jonas Pfoh
> 
> make -C /lib/modules/3.13.0/build M=`pwd` \
>                 LINUXINCLUDE="-I`pwd`/include -I`pwd`/include/uapi -Iinclude \
>                          -Iinclude/uapi -Iarch/x86/include -Iarch/x86/include/uapi \
>                         -Iinclude/generated/uapi -Iarch/x86/include/generated \
>                         -Iarch/x86/include/generated/uapi \
>                         -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-3.13'
>   CC [M]  /local/repos/kvm-kmod/x86/svm.o
> In file included from include/linux/device.h:29:0,
>                  from include/linux/node.h:17,
>                  from include/linux/cpu.h:16,
>                  from /local/repos/kvm-kmod/x86/../external-module-compat-comm.h:15,
>                  from /local/repos/kvm-kmod/x86/external-module-compat.h:45,
>                  from <command-line>:0:
> include/linux/gfp.h: In function ‘gfp_zonelist’:
> include/linux/gfp.h:272:2: error: implicit declaration of function ‘IS_ENABLED’ [-Werror=implicit-function-declaration]
>   if (IS_ENABLED(CONFIG_NUMA) && unlikely(flags & __GFP_THISNODE))
>   ^
> cc1: some warnings being treated as errors
> make[3]: *** [/local/repos/kvm-kmod/x86/svm.o] Error 1
> make[2]: *** [/local/repos/kvm-kmod/x86] Error 2
> make[1]: *** [_module_/local/repos/kvm-kmod] Error 2
> make[1]: Leaving directory `/usr/src/linux-3.13'
> make: *** [all] Error 2

That's likely a kernel issue: not all required headers are pulled by gfp.h.

It's worked around now with 2b06046.

Thanks,
Jan

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