diff options
Diffstat (limited to 'arch/x86/kernel/trampoline.c')
| -rw-r--r-- | arch/x86/kernel/trampoline.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c index 699f7eeb896a..c652ef62742d 100644 --- a/arch/x86/kernel/trampoline.c +++ b/arch/x86/kernel/trampoline.c @@ -3,22 +3,28 @@ #include <asm/trampoline.h> #include <asm/e820.h> +#if defined(CONFIG_X86_64) && defined(CONFIG_ACPI_SLEEP) +#define __trampinit +#define __trampinitdata +#else +#define __trampinit __cpuinit +#define __trampinitdata __cpuinitdata +#endif + /* ready for x86_64 and x86 */ -unsigned char *__cpuinitdata trampoline_base = __va(TRAMPOLINE_BASE); +unsigned char *__trampinitdata trampoline_base; void __init reserve_trampoline_memory(void) { -#ifdef CONFIG_X86_32 - /* - * But first pinch a few for the stack/trampoline stuff - * FIXME: Don't need the extra page at 4K, but need to fix - * trampoline before removing it. (see the GDT stuff) - */ - reserve_early(PAGE_SIZE, PAGE_SIZE + PAGE_SIZE, "EX TRAMPOLINE"); -#endif + unsigned long mem; + /* Has to be in very low memory so we can execute real-mode AP code. */ - reserve_early(TRAMPOLINE_BASE, TRAMPOLINE_BASE + TRAMPOLINE_SIZE, - "TRAMPOLINE"); + mem = find_e820_area(0, 1<<20, TRAMPOLINE_SIZE, PAGE_SIZE); + if (mem == -1L) + panic("Cannot allocate trampoline\n"); + + trampoline_base = __va(mem); + reserve_early(mem, mem + TRAMPOLINE_SIZE, "TRAMPOLINE"); } /* @@ -26,7 +32,7 @@ void __init reserve_trampoline_memory(void) * bootstrap into the page concerned. The caller * has made sure it's suitably aligned. */ -unsigned long __cpuinit setup_trampoline(void) +unsigned long __trampinit setup_trampoline(void) { memcpy(trampoline_base, trampoline_data, TRAMPOLINE_SIZE); return virt_to_phys(trampoline_base); |