linux/arch/s390/kvm
Alexander Graf 10474ae894 KVM: Activate Virtualization On Demand
X86 CPUs need to have some magic happening to enable the virtualization
extensions on them. This magic can result in unpleasant results for
users, like blocking other VMMs from working (vmx) or using invalid TLB
entries (svm).

Currently KVM activates virtualization when the respective kernel module
is loaded. This blocks us from autoloading KVM modules without breaking
other VMMs.

To circumvent this problem at least a bit, this patch introduces on
demand activation of virtualization. This means, that instead
virtualization is enabled on creation of the first virtual machine
and disabled on destruction of the last one.

So using this, KVM can be easily autoloaded, while keeping other
hypervisors usable.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03 09:32:10 +02:00
..
diag.c [S390] Use unsigned long long for u64 on 64bit. 2009-01-09 12:15:07 +01:00
gaccess.h KVM: s390: streamline memslot handling 2009-09-10 08:32:42 +03:00
intercept.c KVM: s390: streamline memslot handling 2009-09-10 08:32:42 +03:00
interrupt.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
Kconfig KVM: remove old KVMTRACE support code 2009-09-10 08:33:03 +03:00
kvm-s390.c KVM: Activate Virtualization On Demand 2009-12-03 09:32:10 +02:00
kvm-s390.h KVM: s390: fix memsize >= 4G 2009-10-04 13:57:23 +02:00
Makefile KVM: s390: intercepts for diagnose instructions 2008-04-27 12:00:46 +03:00
priv.c KVM: s390: Allow stfle instruction in the guest 2009-06-28 14:10:30 +03:00
sie64a.S KVM: s390: arch backend for the kvm kernel module 2008-04-27 12:00:42 +03:00
sigp.c KVM: s390: streamline memslot handling 2009-09-10 08:32:42 +03:00