[PATCH v4 3/6] powerpc/fsl: Make stf barrier PPC_BOOK3S_64 specific.

[Diana Craciun]

NXP Book3E platforms are not vulnerable to speculative store
bypass, so make the mitigations PPC_BOOK3S_64 specific.

Signed-off-by: Diana Craciun <diana.craciun at nxp.com>
---
History:

v2-->v3
- new

 arch/powerpc/kernel/security.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 2ebfc5b..3a4e5c3 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -169,6 +169,7 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c
 	return s.len;
 }
 
+#ifdef CONFIG_PPC_BOOK3S_64
 /*
  * Store-forwarding barrier support.
  */
@@ -316,3 +317,5 @@ static __init int stf_barrier_debugfs_init(void)
 }
 device_initcall(stf_barrier_debugfs_init);
 #endif /* CONFIG_DEBUG_FS */
+#endif /* CONFIG_PPC_BOOK3S_64 */
+
-- 
2.5.5