[SPARC64]: Fix build regressions added by dr-cpu changes.
Do not select HOTPLUG_CPU from SUN_LDOMS, that causes
HOTPLUG_CPU to be selected even on non-SMP which is
illegal.
Only build hvtramp.o when SMP, just like trampoline.o
Protect dr-cpu code in ds.c with HOTPLUG_CPU.
Likewise move ldom_startcpu_cpuid() to smp.c and protect
it and the call site with SUN_LDOMS && HOTPLUG_CPU.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 315eef0..833b284 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -281,6 +281,56 @@
spin_unlock_irqrestore(&itc_sync_lock, flags);
}
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
+static void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
+{
+ extern unsigned long sparc64_ttable_tl0;
+ extern unsigned long kern_locked_tte_data;
+ extern int bigkernel;
+ struct hvtramp_descr *hdesc;
+ unsigned long trampoline_ra;
+ struct trap_per_cpu *tb;
+ u64 tte_vaddr, tte_data;
+ unsigned long hv_err;
+
+ hdesc = kzalloc(sizeof(*hdesc), GFP_KERNEL);
+ if (!hdesc) {
+ printk(KERN_ERR PFX "ldom_startcpu_cpuid: Cannot allocate "
+ "hvtramp_descr.\n");
+ return;
+ }
+
+ hdesc->cpu = cpu;
+ hdesc->num_mappings = (bigkernel ? 2 : 1);
+
+ tb = &trap_block[cpu];
+ tb->hdesc = hdesc;
+
+ hdesc->fault_info_va = (unsigned long) &tb->fault_info;
+ hdesc->fault_info_pa = kimage_addr_to_ra(&tb->fault_info);
+
+ hdesc->thread_reg = thread_reg;
+
+ tte_vaddr = (unsigned long) KERNBASE;
+ tte_data = kern_locked_tte_data;
+
+ hdesc->maps[0].vaddr = tte_vaddr;
+ hdesc->maps[0].tte = tte_data;
+ if (bigkernel) {
+ tte_vaddr += 0x400000;
+ tte_data += 0x400000;
+ hdesc->maps[1].vaddr = tte_vaddr;
+ hdesc->maps[1].tte = tte_data;
+ }
+
+ trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
+
+ hv_err = sun4v_cpu_start(cpu, trampoline_ra,
+ kimage_addr_to_ra(&sparc64_ttable_tl0),
+ __pa(hdesc));
+}
+#endif
+
extern void sun4v_init_mondo_queues(int use_bootmem, int cpu, int alloc, int load);
extern unsigned long sparc64_cpu_startup;
@@ -309,7 +359,7 @@
/* Alloc the mondo queues, cpu will load them. */
sun4v_init_mondo_queues(0, cpu, 1, 0);
-#ifdef CONFIG_SUN_LDOMS
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
if (ldom_domaining_enabled)
ldom_startcpu_cpuid(cpu,
(unsigned long) cpu_new_thread);
