s390x/kvm: synchronize guest floating point registers
Add code to kvm_arch_get_registers and kvm_arch_put_registers to save/restore floating point registers. This missing sync was unnoticed until migration of userspace that uses fprs. Signed-off-by: NJason J. Herne <jjherne@us.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> [Update patch to latest upstream] Cc: qemu-stable@nongnu.org Reviewed-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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