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[Zesty,v3,10/11] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number

Message ID 1500657083-15513-1-git-send-email-joserz@linux.vnet.ibm.com
State New
Headers show

Commit Message

Jose Ricardo Ziviani July 21, 2017, 5:11 p.m. UTC 
From: Alexey Kardashevskiy <aik@ozlabs.ru>

BugLink: http://bugs.launchpad.net/bugs/1686019

Small change on file include/uapi/linux/kvm.h due to conflics with
defines included by MIPS and S390 patches.

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>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
(backported from commit 4898d3f49b5b156c33f0ae0f49ede417ab86195e)
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
---
V3:
    Changed "cherry picked" to "backported" from commit id

 include/uapi/linux/kvm.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 1f50f21..655c845 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -873,6 +873,7 @@  struct kvm_ppc_smmu_info {
 #define KVM_CAP_PPC_HTM 132
 #define KVM_CAP_PPC_MMU_RADIX 134
 #define KVM_CAP_PPC_MMU_HASH_V3 135
+#define KVM_CAP_SPAPR_TCE_VFIO 142
 
 #ifdef KVM_CAP_IRQ_ROUTING