powerpc/64: Make meltdown reporting Book3S 64 specific
authorDiana Craciun <diana.craciun@nxp.com>
Fri, 27 Jul 2018 23:06:36 +0000 (09:06 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 7 Aug 2018 14:32:24 +0000 (00:32 +1000)
In a subsequent patch we will enable building security.c for Book3E.
However the NXP platforms are not vulnerable to Meltdown, so make the
Meltdown vulnerability reporting PPC_BOOK3S_64 specific.

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
[mpe: Split out of larger patch]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/security.c

index 8ee1ade..2064886 100644 (file)
@@ -92,6 +92,7 @@ static __init int barrier_nospec_debugfs_init(void)
 device_initcall(barrier_nospec_debugfs_init);
 #endif /* CONFIG_DEBUG_FS */
 
+#ifdef CONFIG_PPC_BOOK3S_64
 ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf)
 {
        bool thread_priv;
@@ -124,6 +125,7 @@ ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, cha
 
        return sprintf(buf, "Vulnerable\n");
 }
+#endif
 
 ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, char *buf)
 {