Commit b855cc58 authored by Uros Bizjak's avatar Uros Bizjak Committed by Ingo Molnar
Browse files

x86/boot: Use current_stack_pointer to avoid asm() in init_heap() 



Use current_stack_pointer to avoid asm() in the calculation of
stack_end in init_heap(). The new code is more readable and
results in exactly the same object file.

Signed-off-by: default avatarUros Bizjak <ubizjak@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240520083011.135342-1-ubizjak@gmail.com
parent 41c14f1a

arch/x86/boot/main.c

+2 −3
Original line number Diff line number Diff line
@@ -119,9 +119,8 @@ static void init_heap(void) 
	char *stack_end;



	if (boot_params.hdr.loadflags & CAN_USE_HEAP) {

		asm("leal %n1(%%esp),%0"

		    : "=r" (stack_end) : "i" (STACK_SIZE));



		stack_end = (char *)

			(current_stack_pointer - STACK_SIZE);

		heap_end = (char *)

			((size_t)boot_params.hdr.heap_end_ptr + 0x200);

		if (heap_end > stack_end)