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[PULL,17/20] s390-ccw.img: Reinitialize guessing on reboot

Message ID 1425976693-18087-18-git-send-email-borntraeger@de.ibm.com
State New
Headers show

Commit Message

Christian Borntraeger March 10, 2015, 8:38 a.m. UTC 
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>
Message-Id: <1425310029-53396-3-git-send-email-borntraeger@de.ibm.com>
---
 pc-bios/s390-ccw/virtio.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
index 76919f7..57ff1b0 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);