Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
|
|
#include <asm/hwrpb.h>
|
|
#include <linux/device.h>
|
|
#include <linux/cpu.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
|