static int radix__init_new_context(struct mm_struct *mm)
{
unsigned long rts_field;
int index, max_id;
max_id = (1 << mmu_pid_bits) - 1;
index = alloc_context_id(mmu_base_pid, max_id);
if (index < 0)
return index;
/*
* set the process table entry,
*/
rts_field = radix__get_tree_size();
process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);
/*
* Order the above store with subsequent update of the PID
* register (at which point HW can start loading/caching
* the entry) and the corresponding load by the MMU from
* the L2 cache.
*/
asm volatile("ptesync;isync" : : : "memory");
mm->context.npu_context = NULL;
return index;
}
static int radix__init_new_context(struct mm_struct *mm, int index)
{
unsigned long rts_field;
/*
* set the process table entry,
*/
rts_field = radix__get_tree_size();
process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);
return 0;
}