KVM: s390: fix cmma migration for multiple memory slots
When multiple memory slots are present the cmma migration code does not allocate enough memory for the bitmap. The memory slots are sorted in reverse order, so we must use gfn and size of slot[0] instead of the last one. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NClaudio Imbrenda <imbrenda@linux.vnet.ibm.com> Cc: stable@vger.kernel.org # 4.13+ Fixes: 190df4a2 (KVM: s390: CMMA tracking, ESSA emulation, migration mode) Reviewed-by: NCornelia Huck <cohuck@redhat.com>
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