From b02064a9b8134e1aac4e891abf72139ca0b126ee Mon Sep 17 00:00:00 2001
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Date: Thu, 3 Sep 2015 11:57:56 +0200
Subject: s390/numa: write kernel message when emu_size has been increased

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c
index 30b2698..828d069 100644
--- a/arch/s390/numa/mode_emu.c
+++ b/arch/s390/numa/mode_emu.c
@@ -436,9 +436,15 @@ static void emu_update_cpu_topology(void)
  */
 static unsigned long emu_setup_size_adjust(unsigned long size)
 {
+	unsigned long size_new;
+
 	size = size ? : CONFIG_EMU_SIZE;
-	size = roundup(size, memory_block_size_bytes());
-	return size;
+	size_new = roundup(size, memory_block_size_bytes());
+	if (size_new == size)
+		return size;
+	pr_warn("Increasing memory stripe size from %ld MB to %ld MB\n",
+		size >> 20, size_new >> 20);
+	return size_new;
 }
 
 /*
-- 
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