x86, realmode: Move SMP trampoline to unified realmode code

[cascardo/linux.git] / arch / x86 / kernel / smpboot.c

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 6e1e406..c7971ea 100644 (file)
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -57,7 +57,7 @@
 #include <asm/nmi.h>
 #include <asm/irq.h>
 #include <asm/idle.h>
-#include <asm/trampoline.h>
+#include <asm/realmode.h>
 #include <asm/cpu.h>
 #include <asm/numa.h>
 #include <asm/pgtable.h>
@@ -73,6 +73,8 @@
 #include <asm/smpboot_hooks.h>
 #include <asm/i8259.h>
 
+#include <asm/realmode.h>
+
 /* State of each CPU */
 DEFINE_PER_CPU(int, cpu_state) = { 0 };
 
@@ -662,8 +664,12 @@ static void __cpuinit announce_cpu(int cpu, int apicid)
  */
 static int __cpuinit do_boot_cpu(int apicid, int cpu)
 {
+       volatile u32 *trampoline_status =
+               (volatile u32 *) __va(real_mode_header.trampoline_status);
+       /* start_ip had better be page-aligned! */
+       unsigned long start_ip = real_mode_header.trampoline_data;
+
        unsigned long boot_error = 0;
-       unsigned long start_ip;
        int timeout;
        struct create_idle c_idle = {
                .cpu    = cpu,
@@ -713,9 +719,6 @@ do_rest:
        initial_code = (unsigned long)start_secondary;
        stack_start  = c_idle.idle->thread.sp;
 
-       /* start_ip had better be page-aligned! */
-       start_ip = trampoline_address();
-
        /* So we see what's up */
        announce_cpu(cpu, apicid);
 
@@ -778,8 +781,7 @@ do_rest:
                        pr_debug("CPU%d: has booted.\n", cpu);
                } else {
                        boot_error = 1;
-                       if (*(volatile u32 *)TRAMPOLINE_SYM(trampoline_status)
-                           == 0xA5A5A5A5)
+                       if (*trampoline_status == 0xA5A5A5A5)
                                /* trampoline started but...? */
                                pr_err("CPU%d: Stuck ??\n", cpu);
                        else
@@ -805,7 +807,7 @@ do_rest:
        }
 
        /* mark "stuck" area as not stuck */
-       *(volatile u32 *)TRAMPOLINE_SYM(trampoline_status) = 0;
+       *trampoline_status = 0;
 
        if (get_uv_system_type() != UV_NON_UNIQUE_APIC) {
                /*