Unverified Commit 6b289a3f authored by Nam Cao's avatar Nam Cao Committed by Palmer Dabbelt
Browse files

riscv: remove redundant mv instructions 



Some mv instructions were useful when first introduced to preserve a0 and
a1 before function calls. However the code has changed and they are now
redundant. Remove them.

Signed-off-by: default avatarNam Cao <namcaov@gmail.com>
Reviewed-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230725053835.138910-1-namcaov@gmail.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 7aa7d502

arch/riscv/kernel/head.S

+1 −5
Original line number Diff line number Diff line
@@ -289,10 +289,6 @@ clear_bss: 
	blt a3, a4, clear_bss

clear_bss_done:

#endif

	/* Save hart ID and DTB physical address */

	mv s0, a0

	mv s1, a1



	la a2, boot_cpu_hartid

	XIP_FIXUP_OFFSET a2

	REG_S a0, (a2)
@@ -306,7 +302,7 @@ clear_bss_done: 
	la a0, __dtb_start

	XIP_FIXUP_OFFSET a0

#else

	mv a0, s1

	mv a0, a1

#endif /* CONFIG_BUILTIN_DTB */

	call setup_vm

#ifdef CONFIG_MMU