diff options
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/proc.S | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 8f074d64b760..5f9a73a4452c 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -448,16 +448,15 @@ ENTRY(__cpu_setup) tcr_compute_pa_size x10, #TCR_IPS_SHIFT, x5, x6 #ifdef CONFIG_ARM64_HW_AFDBM /* - * Hardware update of the Access and Dirty bits. + * Enable hardware update of the Access Flags bit. + * Hardware dirty bit management is enabled later, + * via capabilities. */ mrs x9, ID_AA64MMFR1_EL1 and x9, x9, #0xf - cbz x9, 2f - cmp x9, #2 - b.lt 1f - orr x10, x10, #TCR_HD // hardware Dirty flag update -1: orr x10, x10, #TCR_HA // hardware Access flag update -2: + cbz x9, 1f + orr x10, x10, #TCR_HA // hardware Access flag update +1: #endif /* CONFIG_ARM64_HW_AFDBM */ msr tcr_el1, x10 ret // return to head.S |