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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 v4 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
Date: Tue,  7 Feb 2017 18:17:06 +1100	[thread overview]
Message-ID: <20170207071711.28938-6-aik@ozlabs.ru> (raw)
In-Reply-To: <20170207071711.28938-1-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 cac48eda1075..a2c9bb5a0ead 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -871,6 +871,7 @@ 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

  parent reply	other threads:[~2017-02-07  7:17 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-07  7:17 [PATCH kernel v4 00/10] powerpc/kvm/vfio: Enable in-kernel acceleration Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 01/10] powerpc/mmu: Add real mode support for IOMMU preregistered memory Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 02/10] powerpc/powernv/iommu: Add real mode version of iommu_table_ops::exchange() Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 03/10] powerpc/iommu/vfio_spapr_tce: Cleanup iommu_table disposal Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 04/10] powerpc/vfio_spapr_tce: Add reference counting to iommu_table Alexey Kardashevskiy
2017-02-07  7:17 ` Alexey Kardashevskiy [this message]
2017-02-07  7:17 ` [PATCH kernel v4 06/10] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 07/10] KVM: PPC: Pass kvm* to kvmppc_find_table() Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 08/10] KVM: PPC: Separate TCE validation from update Alexey Kardashevskiy
2017-02-09  3:51   ` David Gibson
2017-02-09  8:20     ` Alexey Kardashevskiy
2017-02-10  3:07       ` David Gibson
2017-02-10  4:09         ` Alexey Kardashevskiy
2017-02-10  4:50           ` David Gibson
2017-02-10  7:58             ` Alexey Kardashevskiy
2017-02-07  7:17 ` [PATCH kernel v4 09/10] KVM: PPC: Use preregistered memory API to access TCE list Alexey Kardashevskiy
2017-02-09  4:00   ` David Gibson
2017-02-07  7:17 ` [PATCH kernel v4 10/10] KVM: PPC: VFIO: Add in-kernel acceleration for VFIO Alexey Kardashevskiy
2017-02-09  6:41   ` David Gibson
2017-02-10  2:50     ` Alexey Kardashevskiy
2017-02-10  4:02       ` David Gibson

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