Re: Current kernel fails to compile with KVM on PowerPC

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On 22.11.2011, at 21:04, Jörg Sommer wrote:

> Hi,
> 
> Jörg Sommer hat am Mon 07. Nov, 20:48 (+0100) geschrieben:
>> I'm trying to build the kernel with the git commit-id
>> 31555213f03bca37d2c02e10946296052f4ecfcd, but it fails
>> 
>>  CHK     include/linux/version.h
>>  HOSTCC  scripts/mod/modpost.o
>>  CHK     include/generated/utsrelease.h
>>  UPD     include/generated/utsrelease.h
>>  HOSTLD  scripts/mod/modpost
>>  GEN     include/generated/bounds.h
>>  CC      arch/powerpc/kernel/asm-offsets.s
>> In file included from arch/powerpc/kernel/asm-offsets.c:59:0:
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h: In function ‘compute_tlbie_rb’:
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h:393:10: error: ‘HPTE_V_SECONDARY’ undeclared (first use in this function)
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h:393:10: note: each undeclared identifier is reported only once for each function it appears in
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h:396:12: error: ‘HPTE_V_1TB_SEG’ undeclared (first use in this function)
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h:401:10: error: ‘HPTE_V_LARGE’ undeclared (first use in this function)
>> /home/joerg/git/linux/arch/powerpc/include/asm/kvm_book3s.h:415:2: warning: right shift count >= width of type [enabled by default]
>> make[3]: *** [arch/powerpc/kernel/asm-offsets.s] Fehler 1
>> make[2]: *** [prepare0] Fehler 2
>> make[1]: *** [deb-pkg] Fehler 2
>> make: *** [deb-pkg] Fehler 2
> 
> I'm still having this problem. I can' build
> 6fe4c6d466e95d31164f14b1ac4aefb51f0f4f82. Are there any patches to
> make the kernel builds and do not oops [1] on PowerPC?

The failures above should be fixed by now.

> [1] »kernel BUG at include/linux/kvm_host.h:603!«
>  http://www.mail-archive.com/kvm@xxxxxxxxxxxxxxx/msg61433.html

This is unfortunately still there. It's because of preemption being enabled. Please just use CONFIG_PREEMPT_NONE for the time being - it's on my todo list :)


Alex

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