diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0055-x86-cpu-Implement-CPU-vulnerabilites-sysfs-functions.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0055-x86-cpu-Implement-CPU-vulnerabilites-sysfs-functions.patch | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0055-x86-cpu-Implement-CPU-vulnerabilites-sysfs-functions.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0055-x86-cpu-Implement-CPU-vulnerabilites-sysfs-functions.patch deleted file mode 100644 index 84049cea..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0055-x86-cpu-Implement-CPU-vulnerabilites-sysfs-functions.patch +++ /dev/null @@ -1,86 +0,0 @@ -From 07101c90d59d128819a47b0274cbdd02750dfd1a Mon Sep 17 00:00:00 2001 -From: Thomas Gleixner <tglx@linutronix.de> -Date: Sun, 7 Jan 2018 22:48:01 +0100 -Subject: [PATCH 055/103] x86/cpu: Implement CPU vulnerabilites sysfs functions - -commit 61dc0f555b5c761cdafb0ba5bd41ecf22d68a4c4 upstream. - -Implement the CPU vulnerabilty show functions for meltdown, spectre_v1 and -spectre_v2. - -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> -Cc: Peter Zijlstra <peterz@infradead.org> -Cc: Will Deacon <will.deacon@arm.com> -Cc: Dave Hansen <dave.hansen@intel.com> -Cc: Linus Torvalds <torvalds@linuxfoundation.org> -Cc: Borislav Petkov <bp@alien8.de> -Cc: David Woodhouse <dwmw@amazon.co.uk> -Link: https://lkml.kernel.org/r/20180107214913.177414879@linutronix.de -Signed-off-by: Razvan Ghitulete <rga@amazon.de> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - arch/x86/Kconfig | 1 + - arch/x86/kernel/cpu/bugs.c | 29 +++++++++++++++++++++++++++++ - 2 files changed, 30 insertions(+) - -diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig -index bada636..e0f6590 100644 ---- a/arch/x86/Kconfig -+++ b/arch/x86/Kconfig -@@ -64,6 +64,7 @@ config X86 - select GENERIC_CLOCKEVENTS_MIN_ADJUST - select GENERIC_CMOS_UPDATE - select GENERIC_CPU_AUTOPROBE -+ select GENERIC_CPU_VULNERABILITIES - select GENERIC_EARLY_IOREMAP - select GENERIC_FIND_FIRST_BIT - select GENERIC_IOMAP -diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c -index a44ef52..cb6b4f9 100644 ---- a/arch/x86/kernel/cpu/bugs.c -+++ b/arch/x86/kernel/cpu/bugs.c -@@ -9,6 +9,7 @@ - */ - #include <linux/init.h> - #include <linux/utsname.h> -+#include <linux/cpu.h> - #include <asm/bugs.h> - #include <asm/processor.h> - #include <asm/processor-flags.h> -@@ -59,3 +60,31 @@ void __init check_bugs(void) - set_memory_4k((unsigned long)__va(0), 1); - #endif - } -+ -+#ifdef CONFIG_SYSFS -+ssize_t cpu_show_meltdown(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ if (!boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN)) -+ return sprintf(buf, "Not affected\n"); -+ if (boot_cpu_has(X86_FEATURE_KAISER)) -+ return sprintf(buf, "Mitigation: PTI\n"); -+ return sprintf(buf, "Vulnerable\n"); -+} -+ -+ssize_t cpu_show_spectre_v1(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V1)) -+ return sprintf(buf, "Not affected\n"); -+ return sprintf(buf, "Vulnerable\n"); -+} -+ -+ssize_t cpu_show_spectre_v2(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V2)) -+ return sprintf(buf, "Not affected\n"); -+ return sprintf(buf, "Vulnerable\n"); -+} -+#endif --- -2.7.4 - |