Patchwork [v4,2/3] e1000: update nc.link_down in e1000_post_load()

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Submitter Amos Kong
Date Sept. 17, 2012, 2:25 a.m.
Message ID <1347848736-25194-3-git-send-email-akong@redhat.com>
Download mbox | patch
Permalink /patch/184272/
State New
Headers show

Comments

Amos Kong - Sept. 17, 2012, 2:25 a.m.
This patch introduced e1000_post_load(), it will be called in the end of
migration. nc.link_down could not be migrated, this patch updates
link_down in e1000_post_load() to keep it coincident with real link
status.

Signed-off-by: Amos Kong <akong@redhat.com>
---
 hw/e1000.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

Patch

diff --git a/hw/e1000.c b/hw/e1000.c
index ae8a6c5..2f05b7d 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -1075,11 +1075,22 @@  static bool is_version_1(void *opaque, int version_id)
     return version_id == 1;
 }
 
+static int e1000_post_load(void *opaque, int version_id)
+{
+    E1000State *s = opaque;
+
+    /* infer link_down according to link status bit in mac_reg[STATUS] */
+    s->nic->nc.link_down = (s->mac_reg[STATUS] & E1000_STATUS_LU) == 0;
+
+    return 0;
+}
+
 static const VMStateDescription vmstate_e1000 = {
     .name = "e1000",
     .version_id = 2,
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
+    .post_load = e1000_post_load,
     .fields      = (VMStateField []) {
         VMSTATE_PCI_DEVICE(dev, E1000State),
         VMSTATE_UNUSED_TEST(is_version_1, 4), /* was instance id */