+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A710 | #2224489 | ARM64_ERRATUM_2224489 |
+----------------+-----------------+-----------------+-----------------------------+
-| ARM | Cortex-A715 | #2645198 | ARM64_ERRATUM_2645198 |
-+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-X2 | #2119858 | ARM64_ERRATUM_2119858 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-X2 | #2224489 | ARM64_ERRATUM_2224489 |
config SHADOW_CALL_STACK
bool "Shadow Call Stack"
depends on ARCH_SUPPORTS_SHADOW_CALL_STACK
- depends on DYNAMIC_FTRACE_WITH_REGS || !FUNCTION_GRAPH_TRACER
+ depends on DYNAMIC_FTRACE_WITH_ARGS || DYNAMIC_FTRACE_WITH_REGS || !FUNCTION_GRAPH_TRACER
help
This option enables the compiler's Shadow Call Stack, which
uses a shadow stack to protect function return addresses from
If unsure, say Y.
-config ARM64_ERRATUM_2645198
- bool "Cortex-A715: 2645198: Workaround possible [ESR|FAR]_ELx corruption"
- default y
- help
- This option adds the workaround for ARM Cortex-A715 erratum 2645198.
-
- If a Cortex-A715 cpu sees a page mapping permissions change from executable
- to non-executable, it may corrupt the ESR_ELx and FAR_ELx registers on the
- next instruction abort caused by permission fault.
-
- Only user-space does executable to non-executable permission transition via
- mprotect() system call. Workaround the problem by doing a break-before-make
- TLB invalidation, for all changes to executable user space mappings.
-
- If unsure, say Y.
-
config CAVIUM_ERRATUM_22375
bool "Cavium erratum 22375, 24313"
default y
void __init arm64_hugetlb_cma_reserve(void);
-#define huge_ptep_modify_prot_start huge_ptep_modify_prot_start
-extern pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep);
-
-#define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit
-extern void huge_ptep_modify_prot_commit(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep,
- pte_t old_pte, pte_t new_pte);
-
#include <asm-generic/hugetlb.h>
#endif /* __ASM_HUGETLB_H */
}
-#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
-#define ptep_modify_prot_start ptep_modify_prot_start
-extern pte_t ptep_modify_prot_start(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep);
-
-#define ptep_modify_prot_commit ptep_modify_prot_commit
-extern void ptep_modify_prot_commit(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep,
- pte_t old_pte, pte_t new_pte);
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_PGTABLE_H */
CAP_MIDR_RANGE_LIST(trbe_write_out_of_range_cpus),
},
#endif
-#ifdef CONFIG_ARM64_ERRATUM_2645198
- {
- .desc = "ARM erratum 2645198",
- .capability = ARM64_WORKAROUND_2645198,
- ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A715)
- },
-#endif
#ifdef CONFIG_ARM64_ERRATUM_2077057
{
.desc = "ARM erratum 2077057",
{
return __hugetlb_valid_size(size);
}
-
-pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
- if (IS_ENABLED(CONFIG_ARM64_WORKAROUND_2645198) &&
- cpus_have_const_cap(ARM64_WORKAROUND_2645198)) {
- /*
- * Break-before-make (BBM) is required for all user space mappings
- * when the permission changes from executable to non-executable
- * in cases where cpu is affected with errata #2645198.
- */
- if (pte_user_exec(READ_ONCE(*ptep)))
- return huge_ptep_clear_flush(vma, addr, ptep);
- }
- return huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
-}
-
-void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep,
- pte_t old_pte, pte_t pte)
-{
- set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
-}
}
early_initcall(prevent_bootmem_remove_init);
#endif
-
-pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
- if (IS_ENABLED(CONFIG_ARM64_WORKAROUND_2645198) &&
- cpus_have_const_cap(ARM64_WORKAROUND_2645198)) {
- /*
- * Break-before-make (BBM) is required for all user space mappings
- * when the permission changes from executable to non-executable
- * in cases where cpu is affected with errata #2645198.
- */
- if (pte_user_exec(READ_ONCE(*ptep)))
- return ptep_clear_flush(vma, addr, ptep);
- }
- return ptep_get_and_clear(vma->vm_mm, addr, ptep);
-}
-
-void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep,
- pte_t old_pte, pte_t pte)
-{
- set_pte_at(vma->vm_mm, addr, ptep, pte);
-}
WORKAROUND_2064142
WORKAROUND_2077057
WORKAROUND_2457168
-WORKAROUND_2645198
WORKAROUND_2658417
WORKAROUND_TRBE_OVERWRITE_FILL_MODE
WORKAROUND_TSB_FLUSH_FAILURE