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-rw-r--r--drivers/block/xen-blkfront.c17
-rw-r--r--drivers/xen/platform-pci.c6
-rw-r--r--drivers/xen/xenbus/xenbus_probe.c4
3 files changed, 27 insertions, 0 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 82ed403147c0..6eb2989a9d0a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -48,6 +48,7 @@
#include <xen/grant_table.h>
#include <xen/events.h>
#include <xen/page.h>
+#include <xen/platform_pci.h>
#include <xen/interface/grant_table.h>
#include <xen/interface/io/blkif.h>
@@ -737,6 +738,22 @@ static int blkfront_probe(struct xenbus_device *dev,
}
}
+ /* no unplug has been done: do not hook devices != xen vbds */
+ if (xen_hvm_domain() && (xen_platform_pci_unplug & XEN_UNPLUG_IGNORE)) {
+ int major;
+
+ if (!VDEV_IS_EXTENDED(vdevice))
+ major = BLKIF_MAJOR(vdevice);
+ else
+ major = XENVBD_MAJOR;
+
+ if (major != XENVBD_MAJOR) {
+ printk(KERN_INFO
+ "%s: HVM does not support vbd %d as xen block device\n",
+ __FUNCTION__, vdevice);
+ return -ENODEV;
+ }
+ }
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure");
diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index bdb44f2473e8..c01b5ddce529 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -27,6 +27,7 @@
#include <linux/module.h>
#include <linux/pci.h>
+#include <xen/platform_pci.h>
#include <xen/grant_table.h>
#include <xen/xenbus.h>
#include <xen/events.h>
@@ -195,6 +196,11 @@ static struct pci_driver platform_driver = {
static int __init platform_pci_module_init(void)
{
+ /* no unplug has been done, IGNORE hasn't been specified: just
+ * return now */
+ if (!xen_platform_pci_unplug)
+ return -ENODEV;
+
return pci_register_driver(&platform_driver);
}
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index a9e83c438cbb..37e8894b50d6 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -56,6 +56,7 @@
#include <xen/events.h>
#include <xen/page.h>
+#include <xen/platform_pci.h>
#include <xen/hvm.h>
#include "xenbus_comms.h"
@@ -977,6 +978,9 @@ static void wait_for_devices(struct xenbus_driver *xendrv)
#ifndef MODULE
static int __init boot_wait_for_devices(void)
{
+ if (xen_hvm_domain() && !xen_platform_pci_unplug)
+ return -ENODEV;
+
ready_to_wait_for_devices = 1;
wait_for_devices(NULL);
return 0;