diff options
Diffstat (limited to 'arch/arm64/include/asm/pgtable-hwdef.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index a7d5d6e459eb..2a700f7b12d2 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -80,7 +80,11 @@ #define PGDIR_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - CONFIG_PGTABLE_LEVELS) #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) +#ifdef CONFIG_ARM64_USER_VA_BITS_52 +#define PTRS_PER_PGD (1 << (52 - PGDIR_SHIFT)) +#else #define PTRS_PER_PGD (1 << (VA_BITS - PGDIR_SHIFT)) +#endif /* * Section address mask and size definitions. @@ -310,4 +314,10 @@ #define TTBR_BADDR_MASK_52 (((UL(1) << 46) - 1) << 2) #endif +#ifdef CONFIG_ARM64_USER_VA_BITS_52 +/* Must be at least 64-byte aligned to prevent corruption of the TTBR */ +#define TTBR1_BADDR_4852_OFFSET (((UL(1) << (52 - PGDIR_SHIFT)) - \ + (UL(1) << (48 - PGDIR_SHIFT))) * 8) +#endif + #endif |