x86: remove magic number from ACPI sleep stack buffer
authorMatt Mackall <mpm@selenic.com>
Thu, 9 Oct 2008 17:41:50 +0000 (12:41 -0500)
committerLen Brown <len.brown@intel.com>
Fri, 10 Oct 2008 22:05:51 +0000 (18:05 -0400)
x86_64 SMP suspend to RAM uses a 10k temporary stack for saving the
kernel state, but only 4k of it is used. Shrink it to 4k.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
arch/x86/kernel/acpi/sleep.c

index 426e5d91b63a55d9b49d3387e2c40bb56306f104..29cf3403abef86d7d5ae978ff8da59b74c9df042 100644 (file)
@@ -97,7 +97,7 @@ int acpi_save_state_mem(void)
 #else /* CONFIG_64BIT */
        header->trampoline_segment = setup_trampoline() >> 4;
 #ifdef CONFIG_SMP
-       stack_start.sp = temp_stack + 4096;
+       stack_start.sp = temp_stack + sizeof(temp_stack);
 #endif
        initial_code = (unsigned long)wakeup_long64;
        saved_magic = 0x123456789abcdef0;