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45 lines
1.1 KiB
45 lines
1.1 KiB
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#include <asm/hwrpb.h> |
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#include <linux/device.h> |
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#ifdef CONFIG_SYSFS |
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static int cpu_is_ev6_or_later(void) |
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{ |
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struct percpu_struct *cpu; |
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unsigned long cputype; |
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cpu = (struct percpu_struct *)((char *)hwrpb + hwrpb->processor_offset); |
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cputype = cpu->type & 0xffffffff; |
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/* Include all of EV6, EV67, EV68, EV7, EV79 and EV69. */ |
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return (cputype == EV6_CPU) || ((cputype >= EV67_CPU) && (cputype <= EV69_CPU)); |
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} |
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ssize_t cpu_show_meltdown(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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if (cpu_is_ev6_or_later()) |
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return sprintf(buf, "Vulnerable\n"); |
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else |
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return sprintf(buf, "Not affected\n"); |
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} |
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ssize_t cpu_show_spectre_v1(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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if (cpu_is_ev6_or_later()) |
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return sprintf(buf, "Vulnerable\n"); |
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else |
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return sprintf(buf, "Not affected\n"); |
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} |
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ssize_t cpu_show_spectre_v2(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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if (cpu_is_ev6_or_later()) |
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return sprintf(buf, "Vulnerable\n"); |
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else |
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return sprintf(buf, "Not affected\n"); |
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} |
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#endif
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