[RFC PATCH 2/9] powerpc/64s: system call avoid setting MSR[RI] until we set MSR[EE]

[Nicholas Piggin]

This extends the MSR[RI]=0 window a little further into the system
call in order to pair RI and EE enabling with a single mtmsrd.

XXX: May need to make this radix-only opt. - might take SLB or HPT faults
on the context tracking, etc.

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
 arch/powerpc/kernel/exceptions-64s.S | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S 
b/arch/powerpc/kernel/exceptions-64s.S
index ea7bb7cc0db1..ad9f51e49806 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1905,8 +1905,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE)
        mtctr   r10
        bctr
        .else
-       li      r10,MSR_RI
-       mtmsrd  r10,1                   /* Set RI (EE=0) */
 #ifdef CONFIG_RELOCATABLE
        __LOAD_HANDLER(r10, system_call_common)
        mtctr   r10
-- 
2.23.0