[Qemu-devel] [PATCH 2/4] spapr: introduce helpers to migrate HPT chunks and the end marker

[Greg Kurz]

This consolidates some duplicated code in a single helper.

Signed-off-by: Greg Kurz <address@hidden>
---
 hw/ppc/spapr.c |   38 +++++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index f680f28a15ea..841117f6d185 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1708,6 +1708,23 @@ static int htab_save_setup(QEMUFile *f, void *opaque)
     return 0;
 }
 
+static void htab_save_chunk(QEMUFile *f, sPAPRMachineState *spapr,
+                            int chunkstart, int n_valid, int n_invalid)
+{
+    qemu_put_be32(f, chunkstart);
+    qemu_put_be16(f, n_valid);
+    qemu_put_be16(f, n_invalid);
+    if (spapr) {
+        qemu_put_buffer(f, HPTE(spapr->htab, chunkstart),
+                        HASH_PTE_SIZE_64 * n_valid);
+    }
+}
+
+static void htab_save_end_marker(QEMUFile *f)
+{
+    htab_save_chunk(f, NULL, 0, 0, 0);
+}
+
 static void htab_save_first_pass(QEMUFile *f, sPAPRMachineState *spapr,
                                  int64_t max_ns)
 {
@@ -1739,11 +1756,7 @@ static void htab_save_first_pass(QEMUFile *f, 
sPAPRMachineState *spapr,
         if (index > chunkstart) {
             int n_valid = index - chunkstart;
 
-            qemu_put_be32(f, chunkstart);
-            qemu_put_be16(f, n_valid);
-            qemu_put_be16(f, 0);
-            qemu_put_buffer(f, HPTE(spapr->htab, chunkstart),
-                            HASH_PTE_SIZE_64 * n_valid);
+            htab_save_chunk(f, spapr, chunkstart, n_valid, 0);
 
             if (has_timeout &&
                 (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) 
{
@@ -1805,11 +1818,7 @@ static int htab_save_later_pass(QEMUFile *f, 
sPAPRMachineState *spapr,
             int n_valid = invalidstart - chunkstart;
             int n_invalid = index - invalidstart;
 
-            qemu_put_be32(f, chunkstart);
-            qemu_put_be16(f, n_valid);
-            qemu_put_be16(f, n_invalid);
-            qemu_put_buffer(f, HPTE(spapr->htab, chunkstart),
-                            HASH_PTE_SIZE_64 * n_valid);
+            htab_save_chunk(f, spapr, chunkstart, n_valid, n_invalid);
             sent += index - chunkstart;
 
             if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) 
> max_ns) {
@@ -1872,10 +1881,7 @@ static int htab_save_iterate(QEMUFile *f, void *opaque)
         rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS);
     }
 
-    /* End marker */
-    qemu_put_be32(f, 0);
-    qemu_put_be16(f, 0);
-    qemu_put_be16(f, 0);
+    htab_save_end_marker(f);
 
     return rc;
 }
@@ -1915,9 +1921,7 @@ static int htab_save_complete(QEMUFile *f, void *opaque)
     }
 
     /* End marker */
-    qemu_put_be32(f, 0);
-    qemu_put_be16(f, 0);
-    qemu_put_be16(f, 0);
+    htab_save_end_marker(f);
 
     return 0;
 }