When a region is explicitly unmapped (like with mmu_change_region_attr(.... PTE_TYPE_FAULT)) the address translation still remains but won't be used since the region is marked invalid. Print these regions when we dump the pagetable to help with debugging.
Signed-off-by: Casey Connolly <[email protected]> --- arch/arm/cpu/armv8/cache_v8.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index f07204ed2fad..91c55591a1d9 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -533,9 +533,9 @@ static void __pagetable_walk(u64 addr, u64 tcr, int level, pte_walker_cb_t cb, v if (exit) return; - if (pte_type(&pte) == PTE_TYPE_FAULT) + if (!pte) continue; attrs = pte & ALL_ATTRS; /* If we're currently inside a block or set of pages */ @@ -572,9 +572,9 @@ static void __pagetable_walk(u64 addr, u64 tcr, int level, pte_walker_cb_t cb, v /* Go down a level */ __pagetable_walk(_addr, tcr, level + 1, cb, priv); state[level] = WALKER_STATE_START; - } else if (pte_type(&pte) == PTE_TYPE_BLOCK || pte_type(&pte) == PTE_TYPE_PAGE) { + } else { /* We foud a block or page, start walking */ entry_start = pte; state[level] = WALKER_STATE_REGION; } -- 2.53.0
