On Mon, 2013-05-06 at 17:21 +1000, aik@xxxxxxxxx wrote:
> From: Alexey Kardashevskiy <aik@xxxxxxxxx>
>
> The IOMMU API implements groups creating/deletion, device binding
> and IOMMU map/unmap operations.
>
> The PowerPC implementation uses most of the API except map/unmap
> operations, which are implemented on POWER using hypercalls.
>
> However, in order to link a kernel with the CONFIG_IOMMU_API enabled,
> the empty kvm_iommu_map_pages/kvm_iommu_unmap_pages have to be
> defined, so this defines them.
>
> Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
> Cc: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Paul Mackerras <paulus@xxxxxxxxx>
> ---
> arch/powerpc/include/asm/kvm_host.h | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
> index b6a047e..c025d91 100644
> --- a/arch/powerpc/include/asm/kvm_host.h
> +++ b/arch/powerpc/include/asm/kvm_host.h
> @@ -603,4 +603,18 @@ struct kvm_vcpu_arch {
>
> #define __KVM_HAVE_ARCH_WQP
>
> +#ifdef CONFIG_IOMMU_API
> +/* POWERPC does not use IOMMU API for mapping/unmapping */
> +static inline int kvm_iommu_map_pages(struct kvm *kvm,
> + struct kvm_memory_slot *slot)
> +{
> + return 0;
> +}
> +
> +static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
> + struct kvm_memory_slot *slot)
> +{
> +}
> +#endif /* CONFIG_IOMMU_API */
> +
> #endif /* __POWERPC_KVM_HOST_H__ */
This is no longer needed, Gleb applied my patch for 3.10 that make all
of KVM device assignment dependent on a build config option and the top
level kvm_host.h now includes this when that is not set. Thanks,
Alex
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