Contributors: 1
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Michael Cree |
200 |
100.00% |
1 |
100.00% |
| Total |
200 |
|
1 |
|
#include <asm/hwrpb.h>
#include <linux/device.h>
#ifdef CONFIG_SYSFS
static int cpu_is_ev6_or_later(void)
{
struct percpu_struct *cpu;
unsigned long cputype;
cpu = (struct percpu_struct *)((char *)hwrpb + hwrpb->processor_offset);
cputype = cpu->type & 0xffffffff;
/* Include all of EV6, EV67, EV68, EV7, EV79 and EV69. */
return (cputype == EV6_CPU) || ((cputype >= EV67_CPU) && (cputype <= EV69_CPU));
}
ssize_t cpu_show_meltdown(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (cpu_is_ev6_or_later())
return sprintf(buf, "Vulnerable\n");
else
return sprintf(buf, "Not affected\n");
}
ssize_t cpu_show_spectre_v1(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (cpu_is_ev6_or_later())
return sprintf(buf, "Vulnerable\n");
else
return sprintf(buf, "Not affected\n");
}
ssize_t cpu_show_spectre_v2(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (cpu_is_ev6_or_later())
return sprintf(buf, "Vulnerable\n");
else
return sprintf(buf, "Not affected\n");
}
#endif