diff options
Diffstat (limited to 'arch/arm64/include/asm/mmu_context.h')
| -rw-r--r-- | arch/arm64/include/asm/mmu_context.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index accc2ff32a0e..88451d47036b 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -63,6 +63,7 @@ static inline void cpu_set_reserved_ttbr0(void) * physical memory, in which case it will be smaller. */ extern u64 idmap_t0sz; +extern u64 idmap_ptrs_per_pgd; static inline bool __cpu_uses_extended_idmap(void) { @@ -71,6 +72,15 @@ static inline bool __cpu_uses_extended_idmap(void) } /* + * True if the extended ID map requires an extra level of translation table + * to be configured. + */ +static inline bool __cpu_uses_extended_idmap_level(void) +{ + return ARM64_HW_PGTABLE_LEVELS((64 - idmap_t0sz)) > CONFIG_PGTABLE_LEVELS; +} + +/* * Set TCR.T0SZ to its default value (based on VA_BITS) */ static inline void __cpu_set_tcr_t0sz(unsigned long t0sz) |