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authorEric Auger <eric.auger@redhat.com>2017-04-14 10:18:12 +0200
committerChristoffer Dall <cdall@linaro.org>2017-05-08 14:31:22 +0200
commit100e62983ef3a012e62e0e7116035529a286c1ec (patch)
treee4ee37858b5899b259e4944be329e9daed3be708 /Documentation/virtual/kvm
parentde2a0910795d44d6534e0fe83c571c1bbbe05808 (diff)
KVM: arm/arm64: Add GICV3 pending table save API documentation
Add description for how to save GICV3 LPI pending bit into guest RAM pending tables. Signed-off-by: Eric Auger <eric.auger@redhat.com> Acked-by: Christoffer Dall <cdall@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'Documentation/virtual/kvm')
-rw-r--r--Documentation/virtual/kvm/devices/arm-vgic-v3.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/devices/arm-vgic-v3.txt b/Documentation/virtual/kvm/devices/arm-vgic-v3.txt
index c1a24612c198..9293b45abdb9 100644
--- a/Documentation/virtual/kvm/devices/arm-vgic-v3.txt
+++ b/Documentation/virtual/kvm/devices/arm-vgic-v3.txt
@@ -167,11 +167,17 @@ Groups:
KVM_DEV_ARM_VGIC_CTRL_INIT
request the initialization of the VGIC, no additional parameter in
kvm_device_attr.addr.
+ KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
+ save all LPI pending bits into guest RAM pending tables.
+
+ The first kB of the pending table is not altered by this operation.
Errors:
-ENXIO: VGIC not properly configured as required prior to calling
this attribute
-ENODEV: no online VCPU
-ENOMEM: memory shortage when allocating vgic internal data
+ -EFAULT: Invalid guest ram access
+ -EBUSY: One or more VCPUS are running
KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO