xen: Add suspend/resume support for PV on HVM guests.

Suspend/resume requires few different things on HVM: the suspend
hypercall is different; we don't need to save/restore memory related
settings; except the shared info page and the callback mechanism.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index a9c661108034..d07479c340f5 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -26,6 +26,12 @@ void xen_pre_suspend(void)
                 BUG();
 }
 
+void xen_hvm_post_suspend(int suspend_cancelled)
+{
+        xen_hvm_init_shared_info();
+        xen_callback_vector();
+}
+
 void xen_post_suspend(int suspend_cancelled)
 {
         xen_build_mfn_list_list();