Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c
index fd3a644b08559..b3e3d1bb37f3e 100644
--- a/drivers/xen/pcpu.c
+++ b/drivers/xen/pcpu.c
@@ -58,6 +58,7 @@ struct pcpu {
 	struct list_head list;
 	struct device dev;
 	uint32_t cpu_id;
+	uint32_t acpi_id;
 	uint32_t flags;
 };
 
@@ -249,6 +250,7 @@ static struct pcpu *create_and_register_pcpu(struct xenpf_pcpuinfo *info)
 
 	INIT_LIST_HEAD(&pcpu->list);
 	pcpu->cpu_id = info->xen_cpuid;
+	pcpu->acpi_id = info->acpi_id;
 	pcpu->flags = info->flags;
 
 	/* Need hold on xen_pcpu_lock before pcpu list manipulations */
@@ -381,3 +383,21 @@ err1:
 	return ret;
 }
 arch_initcall(xen_pcpu_init);
+
+#ifdef CONFIG_ACPI
+bool __init xen_processor_present(uint32_t acpi_id)
+{
+	const struct pcpu *pcpu;
+	bool online = false;
+
+	mutex_lock(&xen_pcpu_lock);
+	list_for_each_entry(pcpu, &xen_pcpus, list)
+		if (pcpu->acpi_id == acpi_id) {
+			online = pcpu->flags & XEN_PCPU_FLAGS_ONLINE;
+			break;
+		}
+	mutex_unlock(&xen_pcpu_lock);
+
+	return online;
+}
+#endif