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Commit 1a0e4c8b authored by Christian Borntraeger's avatar Christian Borntraeger
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s390x/kvm: fix small race reboot vs. cmma



Right now we reset all devices before we reset the cmma states.  This
can result in the host kernel discarding guest pages that were
previously in the unused state but already contain a bios or a -kernel
file before the cmma reset has finished.  This race results in random
guest crashes or hangs during very early reboot.

Fixes: 1cd4e0f6 ("s390x/cmma: clean up cmma reset")
Cc: qemu-stable@nongnu.org
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 2034ee51
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