Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Speed up AddressSpaceDispatch creation (Alexey)
* Fix kvm.c assert (David)
* Memory fixes and further speedup (me)
* Persistent reservation manager infrastructure (me)
* virtio-serial: add enable_backend callback (Pavel)
* chardev GMainContext fixes (Peter)

# gpg: Signature made Fri 22 Sep 2017 20:07:33 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (32 commits)
  chardev: remove context in chr_update_read_handler
  chardev: use per-dev context for io_add_watch_poll
  chardev: add Chardev.gcontext field
  chardev: new qemu_chr_be_update_read_handlers()
  scsi: add persistent reservation manager using qemu-pr-helper
  scsi: add multipath support to qemu-pr-helper
  scsi: build qemu-pr-helper
  scsi, file-posix: add support for persistent reservation management
  memory: Share special empty FlatView
  memory: seek FlatView sharing candidates among children subregions
  memory: trace FlatView creation and destruction
  memory: Create FlatView directly
  memory: Get rid of address_space_init_shareable
  memory: Rework "info mtree" to print flat views and dispatch trees
  memory: Do not allocate FlatView in address_space_init
  memory: Share FlatView's and dispatch trees between address spaces
  memory: Move address_space_update_ioeventfds
  memory: Alloc dispatch tree where topology is generared
  memory: Store physical root MR in FlatView
  memory: Rename mem_begin/mem_commit/mem_add helpers
  ...

# Conflicts:
#	configure

2 files changed, 60 insertions, 0 deletions

diff --git a/include/scsi/pr-manager.h b/include/scsi/pr-manager.h
new file mode 100644
index 0000000000..b2b37d63bc
--- /dev/null
+++ b/include/scsi/pr-manager.h
@@ -0,0 +1,56 @@
+#ifndef PR_MANAGER_H
+#define PR_MANAGER_H
+
+#include "qom/object.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/visitor.h"
+#include "qom/object_interfaces.h"
+#include "block/aio.h"
+
+#define TYPE_PR_MANAGER "pr-manager"
+
+#define PR_MANAGER_CLASS(klass) \
+     OBJECT_CLASS_CHECK(PRManagerClass, (klass), TYPE_PR_MANAGER)
+#define PR_MANAGER_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(PRManagerClass, (obj), TYPE_PR_MANAGER)
+#define PR_MANAGER(obj) \
+     OBJECT_CHECK(PRManager, (obj), TYPE_PR_MANAGER)
+
+struct sg_io_hdr;
+
+typedef struct PRManager {
+    /* <private> */
+    Object parent;
+} PRManager;
+
+/**
+ * PRManagerClass:
+ * @parent_class: the base class
+ * @run: callback invoked in thread pool context
+ */
+typedef struct PRManagerClass {
+    /* <private> */
+    ObjectClass parent_class;
+
+    /* <public> */
+    int (*run)(PRManager *pr_mgr, int fd, struct sg_io_hdr *hdr);
+} PRManagerClass;
+
+BlockAIOCB *pr_manager_execute(PRManager *pr_mgr,
+                               AioContext *ctx, int fd,
+                               struct sg_io_hdr *hdr,
+                               BlockCompletionFunc *complete,
+                               void *opaque);
+
+#ifdef CONFIG_LINUX
+PRManager *pr_manager_lookup(const char *id, Error **errp);
+#else
+static inline PRManager *pr_manager_lookup(const char *id, Error **errp)
+{
+    /* The classes do not exist at all!  */
+    error_setg(errp, "No persistent reservation manager with id '%s'", id);
+    return NULL;
+}
+#endif
+
+#endif
diff --git a/include/scsi/utils.h b/include/scsi/utils.h
index d301b31768..00a4bdb080 100644
--- a/include/scsi/utils.h
+++ b/include/scsi/utils.h
@@ -72,10 +72,14 @@ extern const struct SCSISense sense_code_IO_ERROR;
 extern const struct SCSISense sense_code_I_T_NEXUS_LOSS;
 /* Command aborted, Logical Unit failure */
 extern const struct SCSISense sense_code_LUN_FAILURE;
+/* Command aborted, LUN Communication failure */
+extern const struct SCSISense sense_code_LUN_COMM_FAILURE;
 /* Command aborted, Overlapped Commands Attempted */
 extern const struct SCSISense sense_code_OVERLAPPED_COMMANDS;
 /* LUN not ready, Capacity data has changed */
 extern const struct SCSISense sense_code_CAPACITY_CHANGED;
+/* Unit attention, SCSI bus reset */
+extern const struct SCSISense sense_code_SCSI_BUS_RESET;
 /* LUN not ready, Medium not present */
 extern const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM;
 /* Unit attention, Power on, reset or bus device reset occurred */