xen: suspend: pass extra hypercall argument via suspend_info struct

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 5c0184fb9d84347d3d656422a6e6787823a249b8..6ce6b91e7645954fb9ccb574adf65478928cc6d5 100644 (file)
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -36,6 +36,7 @@ static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
 
 struct suspend_info {
        int cancelled;
+       unsigned long arg; /* extra hypercall argument */
 };
 
 #ifdef CONFIG_PM_SLEEP
@@ -58,7 +59,7 @@ static int xen_hvm_suspend(void *data)
         * or the domain was merely checkpointed, and 0 if it
         * is resuming in a new domain.
         */
-       si->cancelled = HYPERVISOR_suspend(0UL);
+       si->cancelled = HYPERVISOR_suspend(si->arg);
 
        xen_hvm_post_suspend(si->cancelled);
        gnttab_resume();
@@ -97,7 +98,7 @@ static int xen_suspend(void *data)
         * or the domain was merely checkpointed, and 0 if it
         * is resuming in a new domain.
         */
-       si->cancelled = HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
+       si->cancelled = HYPERVISOR_suspend(si->arg);
 
        xen_post_suspend(si->cancelled);
        gnttab_resume();
@@ -149,6 +150,11 @@ static void do_suspend(void)
 
        si.cancelled = 1;
 
+       if (xen_hvm_domain())
+               si.arg = 0UL;
+       else
+               si.arg = virt_to_mfn(xen_start_info);
+
        if (xen_hvm_domain())
                err = stop_machine(xen_hvm_suspend, &si, cpumask_of(0));
        else