[Qemu-devel] [PATCH/RFC 2/2] s390-ccw.img: Reinitialize guessing on reboot

[Christian Borntraeger <borntraeger@de.ibm.com>]

guessed_disk_nature is a static zero variable. As the QEMU ELF
loader does not zero the BSS section, lets do it explicitely here.

This fixes reboot for some corner cases (like FCP flash
devices with logical_block_size=512, physical_block_size=4096)

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 pc-bios/s390-ccw/virtio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
index 4dc91a7..bdf5810 100644
--- a/pc-bios/s390-ccw/virtio.c
+++ b/pc-bios/s390-ccw/virtio.c
@@ -362,6 +362,7 @@ void virtio_setup_block(struct subchannel_id schid)
     struct vq_config_block config = {};
 
     blk_cfg.blk_size = 0; /* mark "illegal" - setup started... */
+    guessed_disk_nature = false;
 
     virtio_reset(schid);
 
-- 
2.3.0