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Since proc_dointvec does not perform value range control,
proc_dointvec_minmax should be used to limit value range, which is
clearly intended here, as the internal representation of the value:
unsigned int alloc_pgste:1;
In fact it currently works, since we have
mm->context.alloc_pgste = page_table_allocate_pgste || ...
... since commit 23fefe119ceb5 ("s390/kvm: avoid global config of vm.alloc_pgste=1")
Before that it was
mm->context.alloc_pgste = page_table_allocate_pgste;
which was broken. That was introduced with commit 0b46e0a3ec0d7 ("s390/kvm:
remove delayed reallocation of page tables for KVM").
Fixes: 0b46e0a3ec0d7 ("s390/kvm: remove delayed reallocation of page tables for KVM")
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
5bedf8aa03