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Commit d0d0f743 authored by Matt Mackall's avatar Matt Mackall Committed by Len Brown
Browse files

x86: remove magic number from ACPI sleep stack buffer 



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: default avatarMatt Mackall <mpm@selenic.com>
Acked-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 3fa8749e

arch/x86/kernel/acpi/sleep.c

+1 −1
Original line number Diff line number Diff line
@@ -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;