[PATCH v2 3/3] powerpc/fsl: Implement cpu_show_spectre_v1/v2 for NXP PowerPC Book3E
From: Diana Craciun <hidden>
Date: 2018-06-11 12:53:41
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Signed-off-by: Diana Craciun <redacted> --- arch/powerpc/Kconfig | 2 +- arch/powerpc/kernel/security.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 940c955..a781d60 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig@@ -170,7 +170,7 @@ config PPC select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE - select GENERIC_CPU_VULNERABILITIES if PPC_BOOK3S_64 + select GENERIC_CPU_VULNERABILITIES if PPC_BOOK3S_64 || PPC_FSL_BOOK3E select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL select GENERIC_SMP_IDLE_THREAD
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 797c975..aceaadc 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c@@ -183,3 +183,18 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c } #endif /* CONFIG_PPC_BOOK3S_64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E +ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, char *buf) +{ + if (barrier_nospec_enabled) + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); + + return sprintf(buf, "Vulnerable\n"); +} + +ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Vulnerable\n"); +} +#endif /* CONFIG_PPC_FSL_BOOK3E */ +
--
2.5.5