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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-13 15:30:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-13 15:30:20 -0700
commit2e1c63b7ed36532b68f0eddd6a184d7ba1013b89 (patch)
tree964c4a8a1737095f0b0b7182d45d90cb04c947f4 /drivers
parentfbeb4384748abb78531bbe1e80d627412a0abcfa (diff)
parent3ecb1b7df92393647b13b21b1f7142b65c582511 (diff)
Merge branch 'for-rc1/xen/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'for-rc1/xen/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: add FIX_TEXT_POKE to fixmap xen: honour VCPU availability on boot xen: clean up gate trap/interrupt constants xen: set _PAGE_NX in __supported_pte_mask before pagetable construction xen: resume interrupts before system devices. xen/mmu: weaken flush_tlb_other test xen/mmu: some early pagetable cleanups Xen: Add virt_to_pfn helper function x86-64: remove PGE from must-have feature list xen: mask XSAVE from cpuid NULL noise: arch/x86/xen/smp.c xen: remove xen_load_gdt debug xen: make xen_load_gdt simpler xen: clean up xen_load_gdt xen: split construction of p2m mfn tables from registration xen: separate p2m allocation from setting xen: disable preempt for leave_lazy_mmu
Diffstat (limited to 'drivers')
-rw-r--r--drivers/xen/cpu_hotplug.c40
-rw-r--r--drivers/xen/manage.c5
2 files changed, 33 insertions, 12 deletions
diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c
index 5f54c01c156..bdfd584ad85 100644
--- a/drivers/xen/cpu_hotplug.c
+++ b/drivers/xen/cpu_hotplug.c
@@ -21,29 +21,41 @@ static void disable_hotplug_cpu(int cpu)
set_cpu_present(cpu, false);
}
-static void vcpu_hotplug(unsigned int cpu)
+static int vcpu_online(unsigned int cpu)
{
int err;
char dir[32], state[32];
- if (!cpu_possible(cpu))
- return;
-
sprintf(dir, "cpu/%u", cpu);
err = xenbus_scanf(XBT_NIL, dir, "availability", "%s", state);
if (err != 1) {
printk(KERN_ERR "XENBUS: Unable to read cpu state\n");
- return;
+ return err;
}
- if (strcmp(state, "online") == 0) {
+ if (strcmp(state, "online") == 0)
+ return 1;
+ else if (strcmp(state, "offline") == 0)
+ return 0;
+
+ printk(KERN_ERR "XENBUS: unknown state(%s) on CPU%d\n", state, cpu);
+ return -EINVAL;
+}
+static void vcpu_hotplug(unsigned int cpu)
+{
+ if (!cpu_possible(cpu))
+ return;
+
+ switch (vcpu_online(cpu)) {
+ case 1:
enable_hotplug_cpu(cpu);
- } else if (strcmp(state, "offline") == 0) {
+ break;
+ case 0:
(void)cpu_down(cpu);
disable_hotplug_cpu(cpu);
- } else {
- printk(KERN_ERR "XENBUS: unknown state(%s) on CPU%d\n",
- state, cpu);
+ break;
+ default:
+ break;
}
}
@@ -64,12 +76,20 @@ static void handle_vcpu_hotplug_event(struct xenbus_watch *watch,
static int setup_cpu_watcher(struct notifier_block *notifier,
unsigned long event, void *data)
{
+ int cpu;
static struct xenbus_watch cpu_watch = {
.node = "cpu",
.callback = handle_vcpu_hotplug_event};
(void)register_xenbus_watch(&cpu_watch);
+ for_each_possible_cpu(cpu) {
+ if (vcpu_online(cpu) == 0) {
+ (void)cpu_down(cpu);
+ cpu_clear(cpu, cpu_present_map);
+ }
+ }
+
return NOTIFY_DONE;
}
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 0d61db1e7b4..4b5b84837ee 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -62,14 +62,15 @@ static int xen_suspend(void *data)
gnttab_resume();
xen_mm_unpin_all();
- sysdev_resume();
-
if (!*cancelled) {
xen_irq_resume();
xen_console_resume();
xen_timer_resume();
}
+ sysdev_resume();
+ device_power_up(PMSG_RESUME);
+
return 0;
}