Now that calling __do_fixup_smp_on_up() can be done without passing
the physical-to-virtual offset in r3, we can replace the open coded
PC relative offset calculations with a pair of adr_l invocations. This
removes some open coded arithmetic involving virtual addresses, avoids
literal pools on v7+, and slightly reduces the footprint of the code.
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
arch/arm/kernel/head.S | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 3199d29f4480..5f6436a40db1 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -520,19 +520,11 @@ ARM_BE8(rev r0, r0) @ byteswap if big endian
retne lr
__fixup_smp_on_up:
- adr r0, 1f
- ldmia r0, {r3 - r5}
- sub r3, r0, r3
- add r4, r4, r3
- add r5, r5, r3
+ adr_l r4, __smpalt_begin
+ adr_l r5, __smpalt_end
b __do_fixup_smp_on_up
ENDPROC(__fixup_smp)
- .align
-1: .word .
- .word __smpalt_begin
- .word __smpalt_end
-
.pushsection .data
.align 2
.globl smp_on_up
--
2.17.1
