# \[PATCH v5 5/8\] powerpc/64: Make meltdown reporting Book3S 64 specific - From: Michael Ellerman \ - Date: 2018-07-27 23:06:53 - List: linuxppc-dev - Page: https://ratatoskr.run/linuxppc-dev/2018/07/9505316 - Thread: https://ratatoskr.run/linuxppc-dev/2018/07/9505311/t.md ```text From: Diana Craciun 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 [mpe: Split out of larger patch] Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/security.c | 2 ++ 1 file changed, 2 insertions(+) v5: Split out. diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index 77f253a6f8c9..ef72161de474 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -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) { -- 2.14.1 ```