Commit 4b7a3504 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Michael Ellerman

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: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 56547411
......@@ -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);
......
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