*/
bool kaslr_requires_kpti(void)
{
- bool tx1_bug;
u64 ftr;
-
if (!IS_ENABLED(CONFIG_RANDOMIZE_BASE))
return false;
* Systems affected by Cavium erratum 24756 are incompatible
* with KPTI.
*/
- if (!IS_ENABLED(CONFIG_CAVIUM_ERRATUM_27456)) {
- tx1_bug = false;
- } else if (!static_branch_likely(&arm64_const_caps_ready)) {
+ if (IS_ENABLED(CONFIG_CAVIUM_ERRATUM_27456)) {
extern const struct midr_range cavium_erratum_27456_cpus[];
- tx1_bug = is_midr_in_range_list(read_cpuid_id(),
- cavium_erratum_27456_cpus);
- } else {
- tx1_bug = __cpus_have_const_cap(ARM64_WORKAROUND_CAVIUM_27456);
+ if (is_midr_in_range_list(read_cpuid_id(),
+ cavium_erratum_27456_cpus))
+ return false;
}
- if (tx1_bug)
- return false;
return kaslr_offset() > 0;
}