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.au...@redhat.com>
---
hw/intc/arm_gicv3_its_kvm.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c
index 8e307c9..bad593f 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)) {
--
2.5.5
