diff options
Diffstat (limited to 'arch/tile/mm/init.c')
| -rw-r--r-- | arch/tile/mm/init.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c index 830c4908ea76..6a9d20ddc34f 100644 --- a/arch/tile/mm/init.c +++ b/arch/tile/mm/init.c @@ -254,11 +254,6 @@ static pgprot_t __init init_pgprot(ulong address) return construct_pgprot(PAGE_KERNEL_RO, PAGE_HOME_IMMUTABLE); } - /* As a performance optimization, keep the boot init stack here. */ - if (address >= (ulong)&init_thread_union && - address < (ulong)&init_thread_union + THREAD_SIZE) - return construct_pgprot(PAGE_KERNEL, smp_processor_id()); - #ifndef __tilegx__ #if !ATOMIC_LOCKS_FOUND_VIA_TABLE() /* Force the atomic_locks[] array page to be hash-for-home. */ @@ -557,6 +552,7 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) address = MEM_SV_INTRPT; pmd = get_pmd(pgtables, address); + pfn = 0; /* code starts at PA 0 */ if (ktext_small) { /* Allocate an L2 PTE for the kernel text */ int cpu = 0; @@ -579,10 +575,15 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) } BUG_ON(address != (unsigned long)_stext); - pfn = 0; /* code starts at PA 0 */ - pte = alloc_pte(); - for (pte_ofs = 0; address < (unsigned long)_einittext; - pfn++, pte_ofs++, address += PAGE_SIZE) { + pte = NULL; + for (; address < (unsigned long)_einittext; + pfn++, address += PAGE_SIZE) { + pte_ofs = pte_index(address); + if (pte_ofs == 0) { + if (pte) + assign_pte(pmd++, pte); + pte = alloc_pte(); + } if (!ktext_local) { prot = set_remote_cache_cpu(prot, cpu); cpu = cpumask_next(cpu, &ktext_mask); @@ -591,7 +592,8 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) } pte[pte_ofs] = pfn_pte(pfn, prot); } - assign_pte(pmd, pte); + if (pte) + assign_pte(pmd, pte); } else { pte_t pteval = pfn_pte(0, PAGE_KERNEL_EXEC); pteval = pte_mkhuge(pteval); @@ -614,7 +616,9 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) else pteval = hv_pte_set_mode(pteval, HV_PTE_MODE_CACHE_NO_L3); - *(pte_t *)pmd = pteval; + for (; address < (unsigned long)_einittext; + pfn += PFN_DOWN(HPAGE_SIZE), address += HPAGE_SIZE) + *(pte_t *)(pmd++) = pfn_pte(pfn, pteval); } /* Set swapper_pgprot here so it is flushed to memory right away. */ |