From e8732ffa2e096d433c3f2349b871d43ed0d39f5c Mon Sep 17 00:00:00 2001 From: Christophe Leroy <christophe.leroy@c-s.fr> Date: Thu, 13 Jun 2019 13:52:30 +0000 Subject: [PATCH] powerpc/booke: fix fast syscall entry on SMP Use r10 instead of r9 to calculate CPU offset as r9 contains the value from SRR1 which is used later. Fixes: 1a4b739bbb4f ("powerpc/32: implement fast entry for syscalls on BOOKE") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/kernel/head_booke.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index bfeb469e8106..9f9e0d109d7d 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -145,9 +145,9 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) tophys(r11,r11) addi r11,r11,global_dbcr0@l #ifdef CONFIG_SMP - lwz r9,TASK_CPU(r2) - slwi r9,r9,3 - add r11,r11,r9 + lwz r10, TASK_CPU(r2) + slwi r10, r10, 3 + add r11, r11, r10 #endif lwz r12,0(r11) mtspr SPRN_DBCR0,r12 -- 2.30.9