Claudio Imbrenda 1bab1c02af
KVM: s390: expose no-DAT to guest and migration support ...
The STFLE bit 147 indicates whether the ESSA no-DAT operation code is
valid, the bit is not normally provided to the host; the host is
instead provided with an SCLP bit that indicates whether guests can
support the feature.
This patch:
* enables the STFLE bit in the guest if the corresponding SCLP bit is
present in the host.
* adds support for migrating the no-DAT bit in the PGSTEs
* fixes the software interpretation of the ESSA instruction that is
used when migrating, both for the new operation code and for the old
"set stable", as per specifications.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com >
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com >
Acked-by: Cornelia Huck <cohuck@redhat.com >
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com >
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1bab1c02af