[PATCH] powerpc/book3s: Don't clear MSR_RI in hmi handler.
DORMANTno replies
From: Mahesh J Salgaonkar <hidden>
Date: 2014-10-07 10:25:46
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
From: Mahesh Salgaonkar <redacted> In HMI interrupt handler we don't touch SRR0/SRR1, instead we touch HSRR0/HSRR1. Hence we don't need to clear MSR_RI bit. Signed-off-by: Mahesh Salgaonkar <redacted> --- arch/powerpc/kernel/exceptions-64s.S | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 050f79a..72e783e 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S@@ -1270,11 +1270,6 @@ hmi_exception_early: addi r3,r1,STACK_FRAME_OVERHEAD bl hmi_exception_realmode /* Windup the stack. */ - /* Clear MSR_RI before setting SRR0 and SRR1. */ - li r0,MSR_RI - mfmsr r9 /* get MSR value */ - andc r9,r9,r0 - mtmsrd r9,1 /* Clear MSR_RI */ /* Move original HSRR0 and HSRR1 into the respective regs */ ld r9,_MSR(r1) mtspr SPRN_HSRR1,r9