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8c0a7ce606
linux/Documentation/virtual/kvm/devices
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Dominik Dingel 8c0a7ce606 KVM: s390: Allow userspace to limit guest memory size 
With commit c6c956b80b ("KVM: s390/mm: support gmap page tables with less
than 5 levels") we are able to define a limit for the guest memory size.

As we round up the guest size in respect to the levels of page tables
we get to guest limits of: 2048 MB, 4096 GB, 8192 TB and 16384 PB.
We currently limit the guest size to 16 TB, which means we end up
creating a page table structure supporting guest sizes up to 8192 TB.

This patch introduces an interface that allows userspace to tune
this limit. This may bring performance improvements for small guests.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-01-23 13:25:30 +01:00
..
arm-vgic.txt arm/arm64: KVM: vgic: make number of irqs a configurable attribute 2014-09-18 18:48:58 -07:00
mpic.txt kvm/ppc/mpic: remove default routes from documentation 2013-04-30 11:50:39 +02:00
README
s390_flic.txt KVM: s390: adapter interrupt sources 2014-03-21 13:42:49 +01:00
vfio.txt kvm: Add VFIO device 2013-10-30 19:02:03 +01:00
vm.txt KVM: s390: Allow userspace to limit guest memory size 2015-01-23 13:25:30 +01:00
xics.txt KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00

README 

This directory contains specific device bindings for KVM_CAP_DEVICE_CTRL.