x86: move suspend wakeup code to C

Move wakeup code to .c, so that video mode setting code can be shared
between boot and wakeup. Remove nasty assembly code in 64-bit case by
re-using trampoline code. Stack setup was fixed to clear high 16bits
of %esp, maybe that fixes some machines.

.c code sharing and morse code was done H. Peter Anvin, Sam Ravnborg
reviewed kbuild related stuff, and it seems okay to him. Rafael did
some cleanups.

[rjw:
* Made the patch stop breaking compilation on x86-32
* Added arch/x86/kernel/acpi/sleep.h
* Got rid of compiler warnings in arch/x86/kernel/acpi/sleep.c
* Fixed 32-bit compilation on x86-64 systems
* Added include/asm-x86/trampoline.h and fixed the non-SMP
  compilation on 64-bit x86
* Removed arch/x86/kernel/acpi/sleep_32.c which was not used
* Fixed some breakage caused by the integration of smpboot.c done
  under us in the meantime]

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ca3929b16049..424600e671bd 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -53,6 +53,7 @@
 #include <asm/nmi.h>
 #include <asm/irq.h>
 #include <asm/smp.h>
+#include <asm/trampoline.h>
 #include <asm/cpu.h>
 #include <asm/numa.h>
 #include <asm/pgtable.h>
@@ -140,7 +141,7 @@ static atomic_t init_deasserted;
 static int boot_cpu_logical_apicid;
 
 /* ready for x86_64, no harm for x86, since it will overwrite after alloc */
-unsigned char *trampoline_base = __va(SMP_TRAMPOLINE_BASE);
+unsigned char *trampoline_base = __va(TRAMPOLINE_BASE);
 
 /* representing cpus for which sibling maps can be computed */
 static cpumask_t cpu_sibling_setup_map;
@@ -554,8 +555,7 @@ cpumask_t cpu_coregroup_map(int cpu)
  * bootstrap into the page concerned. The caller
  * has made sure it's suitably aligned.
  */
-
-unsigned long __cpuinit setup_trampoline(void)
+unsigned long setup_trampoline(void)
 {
         memcpy(trampoline_base, trampoline_data,
                trampoline_end - trampoline_data);