lkml.org 
[lkml]   [2013]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v8] KVM: PPC: reserve a capability and ioctl numbers for realmode VFIO
Date
This is to reserve a capablity number for upcoming support
of VFIO-IOMMU DMA operations in real mode.

The last ioctl in the group which KVM_CREATE_SPAPR_TCE_IOMMU is added to
is 0xac, the next two numbers are taken - 0xad for KVM_KVMCLOCK_CTRL and
0xae for KVM_ARM_VCPU_INIT. So the KVM_CREATE_SPAPR_TCE_IOMMU ioclt gets
0xaf.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>

---
Changes:
2013/08/15 v8:
* fixed comment again

2013/08/15:
* fixed mistype in comments
* fixed commit message which says what uses ioctls 0xad and 0xae

2013/07/16:
* changed the number

2013/07/11:
* changed order in a file, added comment about a gap in ioctl number
---
include/uapi/linux/kvm.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 99c2533..bd94127 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -668,6 +668,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_IRQ_XICS 92
#define KVM_CAP_ARM_EL1_32BIT 93
#define KVM_CAP_SPAPR_MULTITCE 94
+#define KVM_CAP_SPAPR_TCE_IOMMU 95

#ifdef KVM_CAP_IRQ_ROUTING

@@ -933,6 +934,11 @@ struct kvm_s390_ucas_mapping {
#define KVM_ARM_SET_DEVICE_ADDR _IOW(KVMIO, 0xab, struct kvm_arm_device_addr)
/* Available with KVM_CAP_PPC_RTAS */
#define KVM_PPC_RTAS_DEFINE_TOKEN _IOW(KVMIO, 0xac, struct kvm_rtas_token_args)
+/* 0xad is taken by KVM_KVMCLOCK_CTRL */
+/* 0xae is taken by KVM_ARM_VCPU_INIT */
+/* Available with KVM_CAP_SPAPR_TCE_IOMMU */
+#define KVM_CREATE_SPAPR_TCE_IOMMU _IOW(KVMIO, 0xaf, \
+ struct kvm_create_spapr_tce_iommu)

/* ioctl for vm fd */
#define KVM_CREATE_DEVICE _IOWR(KVMIO, 0xe0, struct kvm_create_device)
--
1.8.3.2


\
 
 \ /
  Last update: 2013-08-15 10:01    [W:0.073 / U:0.244 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site