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riscv: remove redundant mv instructions

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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: Nam Cao <namcaov@gmail.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230725053835.138910-1-namcaov@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Nam Cao 2023-07-25 07:38:35 +02:00 committed by Palmer Dabbelt
parent 7aa7d502e4
commit 6b289a3ffa
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1 changed files with 1 additions and 5 deletions
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6
arch/riscv/kernel/head.S
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@ -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