From 4b7a350480506bf292193e9c1db6fc19d57321ec Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 13 Jul 2016 15:05:26 +0530 Subject: [PATCH] powerpc/mm/hash: Update SDR1 size encoding as documented in ISA 3.0 ISA 3.0 document hash table size in bytes = 2^(HTABSIZE + 18) No functionality change by this patch. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/mm/hash_utils_64.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 4f0fd470ded4..7d0955e04f08 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -714,10 +714,9 @@ int remove_section_mapping(unsigned long start, unsigned long end) #endif /* CONFIG_MEMORY_HOTPLUG */ static void __init hash_init_partition_table(phys_addr_t hash_table, - unsigned long pteg_count) + unsigned long htab_size) { unsigned long ps_field; - unsigned long htab_size; unsigned long patb_size = 1UL << PATB_SIZE_SHIFT; /* @@ -725,7 +724,7 @@ static void __init hash_init_partition_table(phys_addr_t hash_table, * We can ignore that for lpid 0 */ ps_field = 0; - htab_size = __ilog2(pteg_count) - 11; + htab_size = __ilog2(htab_size) - 18; BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 24), "Partition table size too large."); partition_tb = __va(memblock_alloc_base(patb_size, patb_size, @@ -811,7 +810,7 @@ static void __init htab_initialize(void) htab_address = __va(table); /* htab absolute addr + encoded htabsize */ - _SDR1 = table + __ilog2(pteg_count) - 11; + _SDR1 = table + __ilog2(htab_size_bytes) - 18; /* Initialize the HPT with no entries */ memset((void *)table, 0, htab_size_bytes); @@ -820,7 +819,7 @@ static void __init htab_initialize(void) /* Set SDR1 */ mtspr(SPRN_SDR1, _SDR1); else - hash_init_partition_table(table, pteg_count); + hash_init_partition_table(table, htab_size_bytes); } prot = pgprot_val(PAGE_KERNEL); -- 2.11.0