mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:05:18 +07:00
22 lines
691 B
C
22 lines
691 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/cpu.h>
|
||
|
|
#include <asm/facility.h>
|
||
|
|
#include <asm/nospec-branch.h>
|
||
|
|
|
||
|
|
ssize_t cpu_show_spectre_v1(struct device *dev,
|
||
|
|
struct device_attribute *attr, char *buf)
|
||
|
|
{
|
||
|
|
return sprintf(buf, "Mitigation: __user pointer sanitization\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
ssize_t cpu_show_spectre_v2(struct device *dev,
|
||
|
|
struct device_attribute *attr, char *buf)
|
||
|
|
{
|
||
|
|
if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable)
|
||
|
|
return sprintf(buf, "Mitigation: execute trampolines\n");
|
||
|
|
if (__test_facility(82, S390_lowcore.alt_stfle_fac_list))
|
||
|
|
return sprintf(buf, "Mitigation: limited branch prediction\n");
|
||
|
|
return sprintf(buf, "Vulnerable\n");
|
||
|
|
}
|