RE: [PATCH v2 3/3] powerpc/fsl: Implement cpu_show_spectre_v1/v2 for NXP PowerPC Book3E
From: Bharat Bhushan <hidden>
Date: 2018-06-12 02:59:18
Hi Diana,
-----Original Message----- From: Diana Craciun [mailto:diana.craciun@nxp.com] Sent: Monday, June 11, 2018 6:23 PM To: linuxppc-dev@lists.ozlabs.org Cc: mpe@ellerman.id.au; oss@buserror.net; Leo Li <redacted>; Bharat Bhushan [off-list ref]; Diana Madalina Craciun [off-list ref] Subject: [PATCH v2 3/3] powerpc/fsl: Implement cpu_show_spectre_v1/v2 for NXP PowerPC Book3E
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=20 Signed-off-by: Diana Craciun <redacted> --- arch/powerpc/Kconfig | 2 +- arch/powerpc/kernel/security.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) =20diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index940c955..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_THREADdiff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/securit=
y.c
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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 */ =20 +#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