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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-10-20 08:45:12 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-10-20 08:45:12 +0100 |
| commit | 87cb99a6dda5f1b5b0ace461757eae782a3d7873 (patch) | |
| tree | 41b3b542fc08f4cc520271aba421813eb1b028e4 /tools/libxc/xc_domain.c | |
| parent | 5cee2dafd8e2e76f7cc2a783102399822b5bb554 (diff) | |
| download | xen-87cb99a6dda5f1b5b0ace461757eae782a3d7873.tar.gz xen-87cb99a6dda5f1b5b0ace461757eae782a3d7873.tar.bz2 xen-87cb99a6dda5f1b5b0ace461757eae782a3d7873.zip | |
Add nomigrate config option to disable migration/restore
The new nomigrate option can be set to non-zero in vm.cfg
(for both hvm and pvm) to disallow a guest from being
migrated or restored. (Save is still allowed for the purpose
of checkpointing.) The option persists into a save file
and is also communicated into the hypervisor, the latter
for the purposes of a to-be-added hypercall for communicating
to guests that migration is disallowed (which will be
used initially for userland TSC-related sensing, but may
find other uses).
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Diffstat (limited to 'tools/libxc/xc_domain.c')
| -rw-r--r-- | tools/libxc/xc_domain.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c index 61cde9af39..f872583926 100644 --- a/tools/libxc/xc_domain.c +++ b/tools/libxc/xc_domain.c @@ -475,6 +475,15 @@ int xc_domain_set_tsc_native(int xc_handle, uint32_t domid, int is_native) return do_domctl(xc_handle, &domctl); } +int xc_domain_disable_migrate(int xc_handle, uint32_t domid) +{ + DECLARE_DOMCTL; + domctl.cmd = XEN_DOMCTL_disable_migrate; + domctl.domain = (domid_t)domid; + domctl.u.disable_migrate.disable = 1; + return do_domctl(xc_handle, &domctl); +} + int xc_domain_memory_increase_reservation(int xc_handle, uint32_t domid, unsigned long nr_extents, |