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>
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@ -204,7 +204,14 @@ static void kvm_arm_its_reset(DeviceState *dev)
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c->parent_reset(dev);
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error_report("ITS KVM: full reset is not supported by QEMU");
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if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
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KVM_DEV_ARM_ITS_CTRL_RESET)) {
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kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
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KVM_DEV_ARM_ITS_CTRL_RESET, NULL, true, &error_abort);
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return;
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}
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error_report("ITS KVM: full reset is not supported by the host kernel");
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if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
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GITS_CTLR)) {
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