Revert "Move xen patchset to new version's subdir."

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.drivers / ehca-rejecting-dynamic-mem-add-remove.patch

diff --git a/src/patches/suse-2.6.27.31/patches.drivers/ehca-rejecting-dynamic-mem-add-remove.patch b/src/patches/suse-2.6.27.31/patches.drivers/ehca-rejecting-dynamic-mem-add-remove.patch
deleted file mode 100644 (file)
index 2a3f731..0000000
--- a/src/patches/suse-2.6.27.31/patches.drivers/ehca-rejecting-dynamic-mem-add-remove.patch
+++ /dev/null
@@ -1,101 +0,0 @@
-Subject: [PATCH]IB/ehca:reject dynamic memory add/remove
-From: Stefan Roscher <ossrosch@linux.vnet.ibm.com>
-References: 434651 - LTC48744
-
-Since the ehca device driver does not support dynamic memory add and remove
-operations, the driver must explicitly reject such requests in order to prevent
-unpredictable behaviors related to memory regions already occupied and being
-used by InfiniBand applications.
-The solution is to add a memory notifier to the ehca device driver and if a request
-for dynamic memory add or remove comes in, ehca will always reject it.
-
-Signed-off-by: Stefan Roscher <stefan.roscher@de.ibm.com>
-Signed-off-by: Olaf Hering <olh@suse.de>
-
----
- drivers/infiniband/hw/ehca/ehca_main.c |   46 +++++++++++++++++++++++++++++++++
- 1 file changed, 46 insertions(+)
-
---- a/drivers/infiniband/hw/ehca/ehca_main.c
-+++ b/drivers/infiniband/hw/ehca/ehca_main.c
-@@ -44,6 +44,8 @@
- #include <linux/slab.h>
- #endif
- 
-+#include <linux/notifier.h>
-+#include <linux/memory.h>
- #include "ehca_classes.h"
- #include "ehca_iverbs.h"
- #include "ehca_mrmw.h"
-@@ -965,6 +967,39 @@ void ehca_poll_eqs(unsigned long data)
-       spin_unlock(&shca_list_lock);
- }
- 
-+static int ehca_mem_notifier(struct notifier_block *nb,
-+                             unsigned long action, void *data)
-+{
-+      static unsigned long ehca_dmem_warn_time;
-+
-+      switch (action) {
-+      case MEM_CANCEL_OFFLINE:
-+      case MEM_CANCEL_ONLINE:
-+      case MEM_ONLINE:
-+      case MEM_OFFLINE:
-+              return NOTIFY_OK;
-+      case MEM_GOING_ONLINE:
-+      case MEM_GOING_OFFLINE:
-+              /* only ok if no hca is attached to the lpar */
-+              spin_lock(&shca_list_lock);
-+              if (list_empty(&shca_list)) {
-+                      spin_unlock(&shca_list_lock);
-+                      return NOTIFY_OK;
-+              } else {
-+                      spin_unlock(&shca_list_lock);
-+                      if (printk_timed_ratelimit(&ehca_dmem_warn_time,
-+                                                 30 * 1000))
-+                              ehca_gen_err("DMEM operations are not allowed in conjunction with eHCA");
-+                      return NOTIFY_BAD;
-+              }
-+      }
-+      return NOTIFY_OK;
-+}
-+
-+static struct notifier_block ehca_mem_nb = {
-+      .notifier_call = ehca_mem_notifier,
-+};
-+
- static int __init ehca_module_init(void)
- {
-       int ret;
-@@ -992,6 +1027,12 @@ static int __init ehca_module_init(void)
-               goto module_init2;
-       }
- 
-+      ret = register_memory_notifier(&ehca_mem_nb);
-+      if (ret) {
-+              ehca_gen_err("Failed registering memory add/remove notifier");
-+              goto module_init3;
-+      }
-+
-       if (ehca_poll_all_eqs != 1) {
-               ehca_gen_err("WARNING!!!");
-               ehca_gen_err("It is possible to lose interrupts.");
-@@ -1004,6 +1045,9 @@ static int __init ehca_module_init(void)
- 
-       return 0;
- 
-+module_init3:
-+      ibmebus_unregister_driver(&ehca_driver);
-+
- module_init2:
-       ehca_destroy_slab_caches();
- 
-@@ -1019,6 +1063,8 @@ static void __exit ehca_module_exit(void
- 
-       ibmebus_unregister_driver(&ehca_driver);
- 
-+      unregister_memory_notifier(&ehca_mem_nb);
-+
-       ehca_destroy_slab_caches();
- 
-       ehca_destroy_comp_pool();