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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 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
Date: Thu,  8 Dec 2016 19:19:48 +1100	[thread overview]
Message-ID: <20161208081956.26221-2-aik@ozlabs.ru> (raw)
In-Reply-To: <20161208081956.26221-1-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 300ef255d1e0..810f74317987 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -870,6 +870,7 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_S390_USER_INSTR0 130
 #define KVM_CAP_MSI_DEVID 131
 #define KVM_CAP_PPC_HTM 132
+#define KVM_CAP_SPAPR_TCE_VFIO 133
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
-- 
2.11.0

  reply	other threads:[~2016-12-08  8:20 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-08  8:19 [PATCH kernel 0/9] powerpc/kvm/vfio: Enable in-kernel acceleration Alexey Kardashevskiy
2016-12-08  8:19 ` Alexey Kardashevskiy [this message]
2016-12-12  4:08   ` [PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number David Gibson
2016-12-08  8:19 ` [PATCH kernel 2/9] powerpc/iommu: Cleanup iommu_table disposal Alexey Kardashevskiy
2016-12-12  4:15   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 3/9] powerpc/vfio_spapr_tce: Add reference counting to iommu_table Alexey Kardashevskiy
2016-12-12  4:18   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 4/9] powerpc/mmu: Add real mode support for IOMMU preregistered memory Alexey Kardashevskiy
2016-12-16  0:40   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 5/9] KVM: PPC: Use preregistered memory API to access TCE list Alexey Kardashevskiy
2016-12-16  0:57   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 6/9] powerpc/powernv/iommu: Add real mode version of iommu_table_ops::exchange() Alexey Kardashevskiy
2016-12-16  1:06   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 7/9] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently Alexey Kardashevskiy
2016-12-16  1:11   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 8/9] KVM: PPC: Pass kvm* to kvmppc_find_table() Alexey Kardashevskiy
2016-12-16  1:32   ` David Gibson
2016-12-08  8:19 ` [PATCH kernel 9/9] KVM: PPC: Add in-kernel acceleration for VFIO Alexey Kardashevskiy
2016-12-08 17:55   ` Alex Williamson
2016-12-09  7:53     ` Alexey Kardashevskiy
2016-12-09 15:35       ` Alex Williamson
2016-12-14  3:53         ` Alexey Kardashevskiy
2016-12-19 17:27           ` Alex Williamson
  -- strict thread matches above, loose matches on Subject: below --
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

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