[kernel,v9,05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number

Submitted by Alexey Kardashevskiy on March 16, 2017, 7:09 a.m.

Details

Message ID 20170316070932.4385-6-aik@ozlabs.ru
State Superseded
Headers show

Commit Message

Alexey Kardashevskiy March 16, 2017, 7:09 a.m.
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(+)

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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