From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Alex Williamson <alex.williamson@redhat.com>,
David Gibson <david@gibson.dropbear.id.au>,
Paul Mackerras <paulus@samba.org>,
kvm-ppc@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH kernel v9 06/10] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently
Date: Thu, 16 Mar 2017 18:09:28 +1100 [thread overview]
Message-ID: <20170316070932.4385-7-aik@ozlabs.ru> (raw)
In-Reply-To: <20170316070932.4385-1-aik@ozlabs.ru>
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(+)
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
select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
+ select SPAPR_TCE_IOMMU if IOMMU_SUPPORT
---help---
Support running unmodified book3s_64 and book3s_32 guest kernels
in virtual machines on book3s_64 host processors.
--
2.11.0
next prev parent reply other threads:[~2017-03-16 7:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 7:09 [PATCH kernel v9 00/10] powerpc/kvm/vfio: Enable in-kernel acceleration Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 01/10] powerpc/mmu: Add real mode support for IOMMU preregistered memory Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 02/10] powerpc/powernv/iommu: Add real mode version of iommu_table_ops::exchange() Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 03/10] powerpc/iommu/vfio_spapr_tce: Cleanup iommu_table disposal Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 04/10] powerpc/vfio_spapr_tce: Add reference counting to iommu_table Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Alexey Kardashevskiy
2017-03-16 7:09 ` Alexey Kardashevskiy [this message]
2017-03-16 7:09 ` [PATCH kernel v9 07/10] KVM: PPC: Pass kvm* to kvmppc_find_table() Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 08/10] KVM: PPC: Use preregistered memory API to access TCE list Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 09/10] KVM: PPC: iommu: Unify TCE checking Alexey Kardashevskiy
2017-03-16 7:09 ` [PATCH kernel v9 10/10] KVM: PPC: VFIO: Add in-kernel acceleration for VFIO Alexey Kardashevskiy
2017-03-16 16:51 ` Alex Williamson
2017-03-17 2:41 ` Alexey Kardashevskiy
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