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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-24 19:44:25 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-24 19:44:25 -1000
commit7753ea09640807104c8e353f6d5dc47ee55307cf (patch)
tree7db719affec0564593ed85a283de8fd9464177d3 /Documentation
parent83ada0319606c6bbaebda16fad456e37ed64d518 (diff)
parentd02fcf50779ec9d8eb7a81473fd76efe3f04b3a5 (diff)
Merge tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář: "Trimmed second batch of KVM changes for Linux 4.15: - GICv4 Support for KVM/ARM - re-introduce support for CPUs without virtual NMI (cc stable) and allow testing of KVM without virtual NMI on available CPUs - fix long-standing performance issues with assigned devices on AMD (cc stable)" * tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (30 commits) kvm: vmx: Allow disabling virtual NMI support kvm: vmx: Reinstate support for CPUs without virtual NMI KVM: SVM: obey guest PAT KVM: arm/arm64: Don't queue VLPIs on INV/INVALL KVM: arm/arm64: Fix GICv4 ITS initialization issues KVM: arm/arm64: GICv4: Theory of operations KVM: arm/arm64: GICv4: Enable VLPI support KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source KVM: arm/arm64: GICv4: Add doorbell interrupt handling KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE KVM: arm/arm64: GICv4: Propagate property updates to VLPIs KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt4
-rw-r--r--Documentation/virtual/kvm/devices/arm-vgic-its.txt2
2 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index b44217290e57..6571fbfdb2a1 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1890,6 +1890,10 @@
[KVM,ARM] Trap guest accesses to GICv3 common
system registers
+ kvm-arm.vgic_v4_enable=
+ [KVM,ARM] Allow use of GICv4 for direct injection of
+ LPIs.
+
kvm-intel.ept= [KVM,Intel] Disable extended page tables
(virtualized MMU) support on capable Intel chips.
Default is 1 (enabled)
diff --git a/Documentation/virtual/kvm/devices/arm-vgic-its.txt b/Documentation/virtual/kvm/devices/arm-vgic-its.txt
index 8d5830eab26a..4f0c9fc40365 100644
--- a/Documentation/virtual/kvm/devices/arm-vgic-its.txt
+++ b/Documentation/virtual/kvm/devices/arm-vgic-its.txt
@@ -64,6 +64,8 @@ Groups:
-EINVAL: Inconsistent restored data
-EFAULT: Invalid guest ram access
-EBUSY: One or more VCPUS are running
+ -EACCES: The virtual ITS is backed by a physical GICv4 ITS, and the
+ state is not available
KVM_DEV_ARM_VGIC_GRP_ITS_REGS
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