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Commit 5f4b9013 authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Michael Roth
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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>
(cherry picked from commit 1a0e4c8b)
Signed-off-by: default avatarMichael Roth <mdroth@linux.vnet.ibm.com>
parent 5e40f283
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