Re: [RFC PATCH v11 09/29] KVM: x86: Disallow hugepages when memory attributes are mixed

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On 7/19/23 01:44, Sean Christopherson wrote:
+static bool range_has_attrs(struct kvm *kvm, gfn_t start, gfn_t end,
+			    unsigned long attrs)
+{
+	XA_STATE(xas, &kvm->mem_attr_array, start);
+	unsigned long index;
+	bool has_attrs;
+	void *entry;
+
+	rcu_read_lock();
+
+	if (!attrs) {
+		has_attrs = !xas_find(&xas, end);
+		goto out;
+	}
+
+	has_attrs = true;
+	for (index = start; index < end; index++) {
+		do {
+			entry = xas_next(&xas);
+		} while (xas_retry(&xas, entry));
+
+		if (xas.xa_index != index || xa_to_value(entry) != attrs) {
+			has_attrs = false;
+			break;
+		}
+	}
+
+out:
+	rcu_read_unlock();
+	return has_attrs;
+}
+

Can you move this function to virt/kvm/kvm_main.c?

Thanks,

Paolo





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