linux/arch/s390/mm
Dominik Dingel a3a92c31bf KVM: s390: fix mismatch between user and in-kernel guest limit
While the userspace interface requests the maximum size the gmap code
expects to get a maximum address.

This error resulted in bigger page tables than necessary for some guest
sizes, e.g. a 2GB guest used 3 levels instead of 2.

At the same time we introduce KVM_S390_NO_MEM_LIMIT, which allows in a
bright future that a guest spans the complete 64 bit address space.

We also switch to TASK_MAX_SIZE for the initial memory size, this is a
cosmetic change as the previous size also resulted in a 4 level pagetable
creation.

Reported-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-12-15 17:08:21 +01:00
..
cmm.c s390: convert use of typedef ctl_table to struct ctl_table 2013-10-28 08:36:25 +01:00
dump_pagetables.c s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
extable.c s390/exceptions: switch to relative exception table entries 2012-09-26 15:45:10 +02:00
extmem.c s390/diag: add a statistic for diagnose calls 2015-10-14 14:32:06 +02:00
fault.c s390/cpumf: rework program parameter setting to detect guest samples 2015-10-14 14:32:12 +02:00
gup.c s390/mm: enable gup code for NUMA 2015-08-03 10:06:12 +02:00
hugetlbpage.c s390/mm: implement soft-dirty bits for user memory change tracking 2015-10-14 14:32:05 +02:00
init.c s390: avoid cache aliasing under z/VM and KVM 2015-11-16 12:04:18 +01:00
maccess.c s390/maccess: improve s390_kernel_write() 2015-03-25 11:49:44 +01:00
Makefile s390/mem_detect: move memory detection code to mm folder 2013-05-02 15:50:22 +02:00
mem_detect.c s390/sclp: unify basic sclp access by exposing "struct sclp" 2015-05-13 09:58:17 +02:00
mmap.c s390: avoid cache aliasing under z/VM and KVM 2015-11-16 12:04:18 +01:00
page-states.c s390/cmma: remove "cmma disable" code in case of dump again 2014-05-20 08:58:42 +02:00
pageattr.c s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
pgtable.c KVM: s390: fix mismatch between user and in-kernel guest limit 2015-12-15 17:08:21 +01:00
vmem.c s390: remove 31 bit support 2015-03-25 11:49:33 +01:00