KVM: s390/mm: support gmap page tables with less than 5 levels

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Add an addressing limit to the gmap address spaces and only allocate
the page table levels that are needed for the given limit. The limit
is fixed and can not be changed after a gmap has been created.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Martin Schwidefsky 2014-07-01 14:36:04 +02:00 • committed by Christian Borntraeger

parent 527e30b41d

commit c6c956b80b

3 changed files with 59 additions and 33 deletions

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3

arch/s390/include/asm/pgtable.h

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4

arch/s390/kvm/kvm-s390.c

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83

arch/s390/mm/pgtable.c

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