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[3/7,s390] reboot: reset device pages on reboot

Message ID 1335174745-45551-4-git-send-email-borntraeger@de.ibm.com
State New
Headers show

Commit Message

Christian Borntraeger April 23, 2012, 9:52 a.m. UTC 
From: Jens Freimann <jfrei@linux.vnet.ibm.com>

This patch fixes reboot on s390 by resetting the device
page on reboot.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 hw/s390-virtio-bus.c |    7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index be1f5f1..74419b3 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -57,6 +57,12 @@  static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
 /* length of VirtIO device pages */
 const target_phys_addr_t virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 
+static void s390_virtio_bus_reset(void *opaque)
+{
+    VirtIOS390Bus *bus = opaque;
+    bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
+}
+
 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
 {
     VirtIOS390Bus *bus;
@@ -82,6 +88,7 @@  VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 
+    qemu_register_reset(s390_virtio_bus_reset, bus);
     return bus;
 }