kernel-brax3-ubuntu-touch/arch/alpha/kernel/bugs.c
erascape f319b992b1 kernel-5.15: Initial import brax3 UT kernel
* halium configs enabled

Signed-off-by: erascape <erascape@proton.me>
2025-09-23 15:17:10 +00:00

45 lines
1.1 KiB
C

#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