diff options
| author | Eric Auger <eric.auger@redhat.com> | 2017-12-13 17:59:23 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-12-13 17:59:23 +0000 |
| commit | ba2aecabefc5c06a91c12dd421564afd63f083ff (patch) | |
| tree | 3d28594e1dbbe41bbd5d43be8ac86e03dab2ff46 /hw/intc | |
| parent | dd8739669f95b30653a3a05cb2e21da3f52894fa (diff) | |
hw/intc/arm_gicv3_its: Implement full reset
Voiding the ITS caches is not supposed to happen via
individual register writes. So we introduced a dedicated
ITS KVM device ioctl to perform a cold reset of the ITS:
KVM_DEV_ARM_VGIC_GRP_CTRL/KVM_DEV_ARM_ITS_CTRL_RESET. Let's
use this latter if the kernel supports it.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1511883692-11511-5-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/arm_gicv3_its_kvm.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c index 1c663ac28e..bf290b8bff 100644 --- a/hw/intc/arm_gicv3_its_kvm.c +++ b/hw/intc/arm_gicv3_its_kvm.c @@ -204,7 +204,14 @@ static void kvm_arm_its_reset(DeviceState *dev) c->parent_reset(dev); - error_report("ITS KVM: full reset is not supported by QEMU"); + if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_ITS_CTRL_RESET)) { + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_ITS_CTRL_RESET, NULL, true, &error_abort); + return; + } + + error_report("ITS KVM: full reset is not supported by the host kernel"); if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS, GITS_CTLR)) { |