[kernel,v8,06/10] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently

Submitted by Alexey Kardashevskiy on March 10, 2017, 3:53 a.m.


Message ID 20170310035337.22091-7-aik@ozlabs.ru
State Superseded
Headers show

Commit Message

Alexey Kardashevskiy March 10, 2017, 3:53 a.m.
It does not make much sense to have KVM in book3s-64 and
not to have IOMMU bits for PCI pass through support as it costs little
and allows VFIO to function on book3s KVM.

Having IOMMU_API always enabled makes it unnecessary to have a lot of
"#ifdef IOMMU_API" in arch/powerpc/kvm/book3s_64_vio*. With those
ifdef's we could have only user space emulated devices accelerated
(but not VFIO) which do not seem to be very useful.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
 arch/powerpc/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

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diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 029be26b5a17..65a471de96de 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -67,6 +67,7 @@  config KVM_BOOK3S_64
 	select KVM_BOOK3S_64_HANDLER
 	select KVM
 	  Support running unmodified book3s_64 and book3s_32 guest kernels
 	  in virtual machines on book3s_64 host processors.