From b4a26be9f6f8bb72998e445cc75fc6dc0c29513a Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt
Date: Tue, 6 Apr 2010 15:03:40 +0000
Subject: powerpc/pseries: Flush lazy kernel mappings after unplug operations

This ensures that the translations for unmapped IO mappings or
unmapped memory are properly removed from the MMU hash table
before such an unplug. Without this, the hypervisor refuses the
unplug operations due to those resources still being mapped by
the partition.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 drivers/pci/hotplug/rpadlpar_core.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers/pci/hotplug/rpadlpar_core.c')

diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index 4e3e0382c16e..083034710fa6 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/string.h>
+#include <linux/vmalloc.h>
 
 #include <asm/pci-bridge.h>
 #include <linux/mutex.h>
@@ -430,6 +431,8 @@ int dlpar_remove_slot(char *drc_name)
 			rc = dlpar_remove_pci_slot(drc_name, dn);
 			break;
 	}
+	vm_unmap_aliases();
+
 	printk(KERN_INFO "%s: slot %s removed\n", DLPAR_MODULE_NAME, drc_name);
 exit:
 	mutex_unlock(&rpadlpar_mutex);
-- 
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