ugly hack to set the offsets to 0
Signed-off-by: Marc Zyngier <maz@kernel.org>
diff --git a/arm/kvm.c b/arm/kvm.c
index d51cc15..842e5fd 100644
--- a/arm/kvm.c
+++ b/arm/kvm.c
@@ -85,12 +85,32 @@
{
}
+#ifndef KVM_CAP_TIMER_OFFSET
+struct kvm_arm_counter_offset {
+ __u64 counter_offset;
+ __u64 reserved;
+};
+#define KVM_CAP_COUNTER_OFFSET 227
+#define KVM_ARM_SET_COUNTER_OFFSET _IOW(KVMIO, 0xb5, struct kvm_arm_counter_offset)
+#endif
+
+static void set_counter_offset(struct kvm *kvm)
+{
+ struct kvm_arm_counter_offset offset = { .counter_offset = 0 };
+
+ /* A zero offset is all we care about! */
+ if (kvm__supports_extension(kvm, KVM_CAP_COUNTER_OFFSET) &&
+ ioctl(kvm->vm_fd, KVM_ARM_SET_COUNTER_OFFSET, &offset))
+ die("Unable to set the counter offset to 0");
+}
+
void kvm__arch_init(struct kvm *kvm)
{
/* Create the virtual GIC. */
if (gic__create(kvm, kvm->cfg.arch.irqchip))
die("Failed to create virtual GIC");
+ set_counter_offset(kvm);
kvm__arch_enable_mte(kvm);
}
