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475c8e9e89
IS_ENABLED should be reserved for CONFIG_<FOO> uses so convert the uses of IS_ENABLED with a #define to __is_defined. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
23 lines
766 B
C
23 lines
766 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/device.h>
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#include <linux/cpu.h>
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#include <asm/facility.h>
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#include <asm/nospec-branch.h>
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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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return sprintf(buf, "Mitigation: __user pointer sanitization\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 (test_facility(156))
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return sprintf(buf, "Mitigation: etokens\n");
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if (__is_defined(CC_USING_EXPOLINE) && !nospec_disable)
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return sprintf(buf, "Mitigation: execute trampolines\n");
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if (__test_facility(82, S390_lowcore.alt_stfle_fac_list))
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return sprintf(buf, "Mitigation: limited branch prediction\n");
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return sprintf(buf, "Vulnerable\n");
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}
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