powerpc/64s: Fix instruction encoding for lis in ppc_function_entry()

BugLink: https://bugs.launchpad.net/bugs/1920246

commit cea1531 upstream.

'lis r2,N' is 'addis r2,0,N' and the instruction encoding in the macro
LIS_R2 is incorrect (it currently maps to 'addis r0,r2,N'). Fix the
same.

Fixes: c71b7ef ("powerpc: Add ABIv2 support to ppc_function_entry")
Cc: [email protected] # v3.16+
Reported-by: Jiri Olsa <[email protected]>
Signed-off-by: Naveen N. Rao <[email protected]>
Acked-by: Segher Boessenkool <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
Signed-off-by: Kelsey Skunberg <[email protected]>

Author: rnav

arch/powerpc/include/asm/code-patching.h

@@ -72,7 +72,7 @@ void __patch_exception(int exc, unsigned long addr);
 #endif
 
 #define OP_RT_RA_MASK	0xffff0000UL
-#define LIS_R2		0x3c020000UL
+#define LIS_R2		0x3c400000UL
 #define ADDIS_R2_R12	0x3c4c0000UL
 #define ADDI_R2_R2	0x38420000UL