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Revision 39c93c67

ID39c93c67c5995bd8db7a3fa3b95dcd4e6bc881a7

Added by Christian Borntraeger almost 11 years ago

s390/ipl: Fix spurious errors in virtio

With the ccw ipl code sometimes an error message like
"virtio: trying to map MMIO memory" or
"Guest moved used index from %u to %u" appeared. Turns out
that the ccw bios did not zero out the vring, which might
cause stale values in avail->idx and friends, especially
on reboot.

Lets zero out the relevant fields. To activate the patch we
need to rebuild s390-ccw.img as well.

Signed-off-by: Christian Borntraeger <>
Message-id:
Signed-off-by: Anthony Liguori <>

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