[PATCH 5.10 393/717] powerpc/sstep: Cover new VSX instructions under CONFIG_VSX

[Greg Kroah-Hartman]

From: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx>

[ Upstream commit 1817de2f141c718f1a0ae59927ec003e9b144349 ]

Recently added Power10 prefixed VSX instruction are included
unconditionally in the kernel. If they are executed on a
machine without VSX support, it might create issues. Fix that.
Also fix one mnemonics spelling mistake in comment.

Fixes: 50b80a12e4cc ("powerpc sstep: Add support for prefixed load/stores")
Signed-off-by: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201011050908.72173-3-ravi.bangoria@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/powerpc/lib/sstep.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index bf2cd3d42125d..b18bce1a209fa 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2757,6 +2757,7 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 			case 41:	/* plwa */
 				op->type = MKOP(LOAD, PREFIXED | SIGNEXT, 4);
 				break;
+#ifdef CONFIG_VSX
 			case 42:        /* plxsd */
 				op->reg = rd + 32;
 				op->type = MKOP(LOAD_VSX, PREFIXED, 8);
@@ -2797,13 +2798,14 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				op->element_size = 16;
 				op->vsx_flags = VSX_CHECK_VEC;
 				break;
+#endif /* CONFIG_VSX */
 			case 56:        /* plq */
 				op->type = MKOP(LOAD, PREFIXED, 16);
 				break;
 			case 57:	/* pld */
 				op->type = MKOP(LOAD, PREFIXED, 8);
 				break;
-			case 60:        /* stq */
+			case 60:        /* pstq */
 				op->type = MKOP(STORE, PREFIXED, 16);
 				break;
 			case 61:	/* pstd */
-- 
2.27.0