On Fri, Mar 22, 2013 at 02:35:50PM +1100, Stephen Rothwell wrote: > Fixes these build error when CONFIG_KVM is not defined: > > In file included from arch/powerpc/include/asm/kvm_ppc.h:33:0, > from arch/powerpc/kernel/setup_64.c:67: > arch/powerpc/include/asm/kvm_book3s.h:65:20: error: field 'pte' has incomplete type > arch/powerpc/include/asm/kvm_book3s.h:69:18: error: field 'vcpu' has incomplete type > arch/powerpc/include/asm/kvm_book3s.h:98:34: error: 'HPTEG_HASH_NUM_PTE' undeclared here (not in a function) > arch/powerpc/include/asm/kvm_book3s.h:99:39: error: 'HPTEG_HASH_NUM_PTE_LONG' undeclared here (not in a function) > arch/powerpc/include/asm/kvm_book3s.h:100:35: error: 'HPTEG_HASH_NUM_VPTE' undeclared here (not in a function) > arch/powerpc/include/asm/kvm_book3s.h:101:40: error: 'HPTEG_HASH_NUM_VPTE_LONG' undeclared here (not in a function) > arch/powerpc/include/asm/kvm_book3s.h:129:4: error: 'struct kvm_run' declared inside parameter list [-Werror] > arch/powerpc/include/asm/kvm_book3s.h:129:4: error: its scope is only this definition or declaration, which is probably not what you want [-Werror] > > ... and so on ... > > This was introduced by commit f445f11eb2cc265dd47da5b2e864df46cd6e5a82 > "KVM: allow host header to be included even for !CONFIG_KVM" > This will re-introduce the problem that Kevin tried to fix with his original patch. The problem is that kernel/context_tracking.c includes linux/kvm_host.h unconditionally and the later includes asm/kvm_host.h and this breaks on archs without KVM. I think the correct solution is to not include linux/kvm_host.h in kernel/context_tracking.c unconditionally. The patch by Kevin is here: http://lkml.org/lkml/2013/3/21/745 > Cc: Kevin Hilman <khilman@xxxxxxxxxx> > Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx> > Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > --- > include/linux/kvm_host.h | 11 +++++------ > 1 file changed, 5 insertions(+), 6 deletions(-) > > Kevin, does this still fix the error that commit > f445f11eb2cc265dd47da5b2e864df46cd6e5a82 was fixing? > > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index a942863..90ebec0 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -1,8 +1,6 @@ > #ifndef __KVM_HOST_H > #define __KVM_HOST_H > > -#if IS_ENABLED(CONFIG_KVM) > - > /* > * This work is licensed under the terms of the GNU GPL, version 2. See > * the COPYING file in the top-level directory. > @@ -751,6 +749,7 @@ static inline int kvm_deassign_device(struct kvm *kvm, > } > #endif /* CONFIG_IOMMU_API */ > > +#if IS_ENABLED(CONFIG_KVM) > static inline void __guest_enter(void) > { > /* > @@ -770,6 +769,10 @@ static inline void __guest_exit(void) > vtime_account_system(current); > current->flags &= ~PF_VCPU; > } > +#else > +static inline void __guest_enter(void) { return; } > +static inline void __guest_exit(void) { return; } > +#endif /* IS_ENABLED(CONFIG_KVM) */ > > #ifdef CONFIG_CONTEXT_TRACKING > extern void guest_enter(void); > @@ -1057,8 +1060,4 @@ static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) > } > > #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ > -#else > -static inline void __guest_enter(void) { return; } > -static inline void __guest_exit(void) { return; } > -#endif /* IS_ENABLED(CONFIG_KVM) */ > #endif > -- > 1.8.1 > > -- > Cheers, > Stephen Rothwell sfr@xxxxxxxxxxxxxxxx -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
