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Diffstat (limited to 'arch/arm/xen/enlighten.c')
-rw-r--r--arch/arm/xen/enlighten.c82
1 files changed, 52 insertions, 30 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 85501238b425..b96723e258a0 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -23,6 +23,7 @@
#include <linux/of_address.h>
#include <linux/cpuidle.h>
#include <linux/cpufreq.h>
+#include <linux/cpu.h>
#include <linux/mm.h>
@@ -154,7 +155,7 @@ int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
}
EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range);
-static void __init xen_percpu_init(void *unused)
+static void xen_percpu_init(void)
{
struct vcpu_register_vcpu_info info;
struct vcpu_info *vcpup;
@@ -193,6 +194,31 @@ static void xen_power_off(void)
BUG();
}
+static int xen_cpu_notification(struct notifier_block *self,
+ unsigned long action,
+ void *hcpu)
+{
+ switch (action) {
+ case CPU_STARTING:
+ xen_percpu_init();
+ break;
+ default:
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block xen_cpu_notifier = {
+ .notifier_call = xen_cpu_notification,
+};
+
+static irqreturn_t xen_arm_callback(int irq, void *arg)
+{
+ xen_hvm_evtchn_do_upcall();
+ return IRQ_HANDLED;
+}
+
/*
* see Documentation/devicetree/bindings/arm/xen.txt for the
* documentation of the Xen Device Tree format.
@@ -208,6 +234,7 @@ static int __init xen_guest_init(void)
const char *version = NULL;
const char *xen_prefix = "xen,xen-";
struct resource res;
+ phys_addr_t grant_frames;
node = of_find_compatible_node(NULL, NULL, "xen,xen");
if (!node) {
@@ -224,10 +251,14 @@ static int __init xen_guest_init(void)
}
if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res))
return 0;
- xen_hvm_resume_frames = res.start;
+ grant_frames = res.start;
xen_events_irq = irq_of_parse_and_map(node, 0);
- pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n",
- version, xen_events_irq, (xen_hvm_resume_frames >> PAGE_SHIFT));
+ pr_info("Xen %s support found, events_irq=%d gnttab_frame=%pa\n",
+ version, xen_events_irq, &grant_frames);
+
+ if (xen_events_irq < 0)
+ return -ENODEV;
+
xen_domain_type = XEN_HVM_DOMAIN;
xen_setup_features();
@@ -265,6 +296,10 @@ static int __init xen_guest_init(void)
if (xen_vcpu_info == NULL)
return -ENOMEM;
+ if (gnttab_setup_auto_xlat_frames(grant_frames)) {
+ free_percpu(xen_vcpu_info);
+ return -ENOMEM;
+ }
gnttab_init();
if (!xen_initial_domain())
xenbus_probe(NULL);
@@ -276,9 +311,21 @@ static int __init xen_guest_init(void)
disable_cpuidle();
disable_cpufreq();
+ xen_init_IRQ();
+
+ if (request_percpu_irq(xen_events_irq, xen_arm_callback,
+ "events", &xen_vcpu)) {
+ pr_err("Error request IRQ %d\n", xen_events_irq);
+ return -EINVAL;
+ }
+
+ xen_percpu_init();
+
+ register_cpu_notifier(&xen_cpu_notifier);
+
return 0;
}
-core_initcall(xen_guest_init);
+early_initcall(xen_guest_init);
static int __init xen_pm_init(void)
{
@@ -292,31 +339,6 @@ static int __init xen_pm_init(void)
}
late_initcall(xen_pm_init);
-static irqreturn_t xen_arm_callback(int irq, void *arg)
-{
- xen_hvm_evtchn_do_upcall();
- return IRQ_HANDLED;
-}
-
-static int __init xen_init_events(void)
-{
- if (!xen_domain() || xen_events_irq < 0)
- return -ENODEV;
-
- xen_init_IRQ();
-
- if (request_percpu_irq(xen_events_irq, xen_arm_callback,
- "events", &xen_vcpu)) {
- pr_err("Error requesting IRQ %d\n", xen_events_irq);
- return -EINVAL;
- }
-
- on_each_cpu(xen_percpu_init, NULL, 0);
-
- return 0;
-}
-postcore_initcall(xen_init_events);
-
/* In the hypervisor.S file. */
EXPORT_SYMBOL_GPL(HYPERVISOR_event_channel_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_grant_table_op);