powerpc/64e: Fix system call illegal mtmsrd instruction
BookE does not have mtmsrd, switch to use wrteei to enable MSR[EE].
Fixes: dd152f70bdc1 ("powerpc/64s: system call avoid setting MSR[RI] until we set MSR[EE]")
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210706051310.608992-1-npiggin@gmail.com
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index 4063e8a..d4212d2 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -311,9 +311,13 @@
* trace_hardirqs_off().
*/
li r11,IRQS_ALL_DISABLED
- li r12,-1 /* Set MSR_EE and MSR_RI */
stb r11,PACAIRQSOFTMASK(r13)
+#ifdef CONFIG_PPC_BOOK3S
+ li r12,-1 /* Set MSR_EE and MSR_RI */
mtmsrd r12,1
+#else
+ wrteei 1
+#endif
/* Calling convention has r9 = orig r0, r10 = regs */
mr r9,r0