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From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
	Paul Mackerras <paulus@samba.org>,
	Alex Williamson <alex.williamson@redhat.com>,
	David Gibson <david@gibson.dropbear.id.au>,
	kvm-ppc@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH kernel 5/9] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently
Date: Mon,  7 Mar 2016 14:41:13 +1100	[thread overview]
Message-ID: <1457322077-26640-6-git-send-email-aik@ozlabs.ru> (raw)
In-Reply-To: <1457322077-26640-1-git-send-email-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>
---
 arch/powerpc/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index c2024ac..1059846 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -64,6 +64,7 @@ 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.
-- 
2.5.0.rc3

  parent reply	other threads:[~2016-03-07  3:43 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-07  3:41 [PATCH kernel 0/9] KVM, PPC, VFIO: Enable in-kernel acceleration Alexey Kardashevskiy
2016-03-07  3:41 ` [PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Alexey Kardashevskiy
2016-03-07  4:58   ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 2/9] powerpc/mmu: Add real mode support for IOMMU preregistered memory Alexey Kardashevskiy
2016-03-07  5:30   ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 3/9] KVM: PPC: Use preregistered memory API to access TCE list Alexey Kardashevskiy
2016-03-07  6:00   ` David Gibson
2016-03-08  5:47     ` Alexey Kardashevskiy
2016-03-08  6:30       ` David Gibson
2016-03-09  8:55         ` Alexey Kardashevskiy
2016-03-09 23:46           ` David Gibson
2016-03-10  8:33     ` Paul Mackerras
2016-03-10 23:42       ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 4/9] powerpc/powernv/iommu: Add real mode version of xchg() Alexey Kardashevskiy
2016-03-07  6:05   ` David Gibson
2016-03-07  7:32     ` Alexey Kardashevskiy
2016-03-08  4:50       ` David Gibson
2016-03-10  8:43   ` Paul Mackerras
2016-03-10  8:46   ` Paul Mackerras
2016-03-07  3:41 ` Alexey Kardashevskiy [this message]
2016-03-07  3:41 ` [PATCH kernel 6/9] KVM: PPC: Associate IOMMU group with guest view of TCE table Alexey Kardashevskiy
2016-03-07  6:25   ` David Gibson
2016-03-07  9:38     ` Alexey Kardashevskiy
2016-03-08  4:55       ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 7/9] KVM: PPC: Create a virtual-mode only TCE table handlers Alexey Kardashevskiy
2016-03-08  6:32   ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 8/9] KVM: PPC: Add in-kernel handling for VFIO Alexey Kardashevskiy
2016-03-08 11:08   ` David Gibson
2016-03-09  8:46     ` Alexey Kardashevskiy
2016-03-10  5:18       ` David Gibson
2016-03-11  2:15         ` Alexey Kardashevskiy
2016-03-15  6:00           ` David Gibson
2016-03-07  3:41 ` [PATCH kernel 9/9] KVM: PPC: VFIO device: support SPAPR TCE Alexey Kardashevskiy
2016-03-09  5:45   ` David Gibson
2016-03-09  9:20     ` Alexey Kardashevskiy
2016-03-10  5:21       ` David Gibson
2016-03-10 23:09         ` Alexey Kardashevskiy
2016-03-15  6:04           ` David Gibson
     [not found]             ` <15389a41428.27cb.1ca38dd7e845b990cd13d431eb58563d@ozlabs.ru>
     [not found]               ` <20160321051932.GJ23586@voom.redhat.com>
2016-03-22  0:34                 ` Alexey Kardashevskiy
2016-03-23  3:03                   ` David Gibson
2016-06-09  6:47                     ` Alexey Kardashevskiy
2016-06-10  6:50                       ` David Gibson
2016-06-14  3:30                         ` Alexey Kardashevskiy
2016-06-15  4:43                           ` David Gibson
2016-04-08  9:13     ` Alexey Kardashevskiy
2016-04-11  3:36       ` David Gibson

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