diff options
| author | Eric Auger <eric.auger@redhat.com> | 2017-01-09 18:28:27 +0300 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-05-08 15:39:31 +0300 |
| commit | 280771252c1bae0947215c59fb9ea6a8d9f8399d (patch) | |
| tree | 6e08fc97fca8028aebd5a3d0ea754032e36f1b6b /virt/kvm/arm/vgic/vgic-kvm-device.c | |
| parent | ccb1d791ab9e9d45be15a779e6a42fc661309af1 (diff) | |
| download | linux-280771252c1bae0947215c59fb9ea6a8d9f8399d.tar.xz | |
KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
This patch adds a new attribute to GICV3 KVM device
KVM_DEV_ARM_VGIC_GRP_CTRL group. This allows userspace to
flush all GICR pending tables into guest RAM.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-kvm-device.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-kvm-device.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/virt/kvm/arm/vgic/vgic-kvm-device.c b/virt/kvm/arm/vgic/vgic-kvm-device.c index 859bfa871b30..d48743cafedc 100644 --- a/virt/kvm/arm/vgic/vgic-kvm-device.c +++ b/virt/kvm/arm/vgic/vgic-kvm-device.c @@ -580,6 +580,24 @@ static int vgic_v3_set_attr(struct kvm_device *dev, reg = tmp32; return vgic_v3_attr_regs_access(dev, attr, ®, true); } + case KVM_DEV_ARM_VGIC_GRP_CTRL: { + int ret; + + switch (attr->attr) { + case KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES: + mutex_lock(&dev->kvm->lock); + + if (!lock_all_vcpus(dev->kvm)) { + mutex_unlock(&dev->kvm->lock); + return -EBUSY; + } + ret = vgic_v3_save_pending_tables(dev->kvm); + unlock_all_vcpus(dev->kvm); + mutex_unlock(&dev->kvm->lock); + return ret; + } + break; + } } return -ENXIO; } @@ -658,6 +676,8 @@ static int vgic_v3_has_attr(struct kvm_device *dev, switch (attr->attr) { case KVM_DEV_ARM_VGIC_CTRL_INIT: return 0; + case KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES: + return 0; } } return -ENXIO; |