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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 v8 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
Date: Fri, 10 Mar 2017 14:53:32 +1100	[thread overview]
Message-ID: <20170310035337.22091-6-aik@ozlabs.ru> (raw)
In-Reply-To: <20170310035337.22091-1-aik@ozlabs.ru>

This adds a capability number for in-kernel support for VFIO on
SPAPR platform.

The capability will tell the user space whether in-kernel handlers of
H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space
must not attempt allocating a TCE table in the host kernel via
the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests
will not be passed to the user space which is desired action in
the situation like that.

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

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index f51d5082a377..f5a52ffb6b58 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -883,6 +883,7 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_PPC_MMU_RADIX 134
 #define KVM_CAP_PPC_MMU_HASH_V3 135
 #define KVM_CAP_IMMEDIATE_EXIT 136
+#define KVM_CAP_SPAPR_TCE_VFIO 137
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
-- 
2.11.0

WARNING: multiple messages have this Message-ID (diff)
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 v8 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
Date: Fri, 10 Mar 2017 03:53:32 +0000	[thread overview]
Message-ID: <20170310035337.22091-6-aik@ozlabs.ru> (raw)
In-Reply-To: <20170310035337.22091-1-aik@ozlabs.ru>

This adds a capability number for in-kernel support for VFIO on
SPAPR platform.

The capability will tell the user space whether in-kernel handlers of
H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space
must not attempt allocating a TCE table in the host kernel via
the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests
will not be passed to the user space which is desired action in
the situation like that.

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

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index f51d5082a377..f5a52ffb6b58 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -883,6 +883,7 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_PPC_MMU_RADIX 134
 #define KVM_CAP_PPC_MMU_HASH_V3 135
 #define KVM_CAP_IMMEDIATE_EXIT 136
+#define KVM_CAP_SPAPR_TCE_VFIO 137
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
-- 
2.11.0


  parent reply	other threads:[~2017-03-10  3:54 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-10  3:53 [PATCH kernel v8 00/10] powerpc/kvm/vfio: Enable in-kernel acceleration Alexey Kardashevskiy
2017-03-10  3:53 ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 01/10] powerpc/mmu: Add real mode support for IOMMU preregistered memory Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 02/10] powerpc/powernv/iommu: Add real mode version of iommu_table_ops::exchange() Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 03/10] powerpc/iommu/vfio_spapr_tce: Cleanup iommu_table disposal Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-14 18:21   ` Alex Williamson
2017-03-14 18:21     ` Alex Williamson
2017-03-10  3:53 ` [PATCH kernel v8 04/10] powerpc/vfio_spapr_tce: Add reference counting to iommu_table Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-14 19:58   ` Alex Williamson
2017-03-14 19:58     ` Alex Williamson
2017-03-10  3:53 ` Alexey Kardashevskiy [this message]
2017-03-10  3:53   ` [PATCH kernel v8 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 06/10] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 07/10] KVM: PPC: Pass kvm* to kvmppc_find_table() Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 08/10] KVM: PPC: Use preregistered memory API to access TCE list Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 09/10] KVM: PPC: iommu: Unify TCE checking Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  3:53 ` [PATCH kernel v8 10/10] KVM: PPC: VFIO: Add in-kernel acceleration for VFIO Alexey Kardashevskiy
2017-03-10  3:53   ` Alexey Kardashevskiy
2017-03-10  4:47   ` David Gibson
2017-03-10  4:47     ` David Gibson
2017-03-14 21:05   ` Alex Williamson
2017-03-14 21:05     ` Alex Williamson
2017-03-15  4:40     ` David Gibson
2017-03-15  4:40       ` David Gibson
2017-03-15 16:18       ` Alex Williamson
2017-03-15 16:18         ` Alex Williamson
2017-03-15 16:18         ` Alex Williamson
2017-03-16  3:42         ` David Gibson
2017-03-16  3:42           ` David Gibson
2017-03-15 13:21     ` Alexey Kardashevskiy
2017-03-15 13:21       ` Alexey Kardashevskiy
2017-03-15 16:39       ` Alex Williamson
2017-03-15 16:39         ` Alex Williamson
2017-03-15 16:39         ` Alex Williamson
2017-03-15 23:39         ` Alexey Kardashevskiy
2017-03-15 23:39           ` Alexey Kardashevskiy
2017-03-10  4:48 ` [PATCH kernel v8 00/10] powerpc/kvm/vfio: Enable in-kernel acceleration David Gibson
2017-03-10  4:48   ` David Gibson
2017-03-14  0:54   ` Alexey Kardashevskiy
2017-03-14  0:54     ` Alexey Kardashevskiy
2017-03-14  0:55     ` David Gibson
2017-03-14  0:55       ` David Gibson
2017-03-14 17:59       ` Alex Williamson
2017-03-14 17:59         ` Alex Williamson

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