---

yaml
---
r: 191709
b: refs/heads/master
c: 2182325
h: refs/heads/master
i:
  191707: 833e85e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dfbca89987b74c34d9b1a2414b0e5ccee65347e0
+refs/heads/master: 21823259a70b7a2a21eea1d48c25a6f38896dd11

trunk/arch/sh/kernel/setup.c

@@ -191,13 +191,18 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
 						unsigned long end_pfn)
 {
 	struct resource *res = &mem_resources[nid];
+	unsigned long start, end;
 
 	WARN_ON(res->name); /* max one active range per node for now */
 
+	start = start_pfn << PAGE_SHIFT;
+	end = end_pfn << PAGE_SHIFT;
+
 	res->name = "System RAM";
-	res->start = start_pfn << PAGE_SHIFT;
-	res->end = (end_pfn << PAGE_SHIFT) - 1;
+	res->start = start;
+	res->end = end - 1;
 	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+
 	if (request_resource(&iomem_resource, res)) {
 		pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
 		       start_pfn, end_pfn);
@@ -213,6 +218,14 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
 	request_resource(res, &data_resource);
 	request_resource(res, &bss_resource);
 
+	/*
+	 * Also make sure that there is a PMB mapping that covers this
+	 * range before we attempt to activate it, to avoid reset by MMU.
+	 * We can hit this path with NUMA or memory hot-add.
+	 */
+	pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
+			 PAGE_KERNEL);
+
 	add_active_range(nid, start_pfn, end_pfn);
 }