This reverts commit 836b8d4b205d2175b57cb9ef271e638b0c116e89. This is part of a series trying to make use of the arm64 hardware features for tracking dirty pages. Unfortunately this series causes problems for the AC5/AC5X SoCs. Having exhausted other options the consensus seems to be reverting this series is the best course of action.
Signed-off-by: Chris Packham judge.packham@gmail.com ---
arch/arm/cpu/armv8/cache_v8.c | 14 ++++---------- arch/arm/include/asm/global_data.h | 1 - 2 files changed, 4 insertions(+), 11 deletions(-)
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index 4c6a1b1d6c5e..4760064ee18f 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -314,7 +314,7 @@ static void map_range(u64 virt, u64 phys, u64 size, int level, for (i = idx; size; i++) { u64 next_size, *next_table;
- if (level >= gd->arch.first_block_level && + if (level >= 1 && size >= map_size && !(virt & (map_size - 1))) { if (level == 3) table[i] = phys | attrs | PTE_TYPE_PAGE; @@ -353,9 +353,6 @@ static void add_map(struct mm_region *map) if (va_bits < 39) level = 1;
- if (!gd->arch.first_block_level) - gd->arch.first_block_level = 1; - if (gd->arch.has_hafdbs) attrs |= PTE_DBM | PTE_RDONLY;
@@ -372,7 +369,7 @@ static void count_range(u64 virt, u64 size, int level, int *cntp) for (i = idx; size; i++) { u64 next_size;
- if (level >= gd->arch.first_block_level && + if (level >= 1 && size >= map_size && !(virt & (map_size - 1))) { virt += map_size; size -= map_size; @@ -413,13 +410,10 @@ __weak u64 get_page_table_size(void) u64 size, mmfr1;
asm volatile("mrs %0, id_aa64mmfr1_el1" : "=r" (mmfr1)); - if ((mmfr1 & 0xf) == 2) { + if ((mmfr1 & 0xf) == 2) gd->arch.has_hafdbs = true; - gd->arch.first_block_level = 2; - } else { + else gd->arch.has_hafdbs = false; - gd->arch.first_block_level = 1; - }
/* Account for all page tables we would need to cover our memory map */ size = one_pt * count_ranges(); diff --git a/arch/arm/include/asm/global_data.h b/arch/arm/include/asm/global_data.h index b385bae02669..1325b0644248 100644 --- a/arch/arm/include/asm/global_data.h +++ b/arch/arm/include/asm/global_data.h @@ -52,7 +52,6 @@ struct arch_global_data { #if defined(CONFIG_ARM64) unsigned long tlb_fillptr; unsigned long tlb_emerg; - unsigned int first_block_level; bool has_hafdbs; #endif #endif