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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:38:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:38:20 -0700
commite8e8fade7b351f131433fa44ca5d4e960e1c0f9c (patch)
tree783adcdcc4cd6d779fbcb784e21e045024e19374 /arch/microblaze/mm/pgtable.c
parent325ce9e3060960488fa2c1c9eccde5ad85d75e7c (diff)
parent651341213583e9c57072fed0f88a749cc240fe49 (diff)
downloadlinux-e8e8fade7b351f131433fa44ca5d4e960e1c0f9c.tar.bz2
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Defconfig update microblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros microblaze: Fix consistent-sync code microblaze: Define correct L1_CACHE_SHIFT value microblaze: cpuinfo shows cache line length microblaze: Fix kmalloc alignment on non-coherent DMA platforms microblaze: Fix typo fault in cache code microblaze: Fix consistent code microblaze: pci-dma: use include/linux/dma-mapping.h microblaze: page.h: Remove get_user_page and free_user_page microblaze: Remove "cache" optimized copy_page function microblaze: invoke oom-killer from page fault microblaze: fix divide by zero exception message microblaze: Add isa_dma_bridge_buggy to dma.h microblaze: Remove ancient code microblaze: Quiet section mismatch warnings for MMU version microblaze: Quiet section mismatch warnings microblaze: Fix IRQ entry/exit ftracing microblaze: resource/PCI: align functions now return start of resource microblaze: PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
Diffstat (limited to 'arch/microblaze/mm/pgtable.c')
-rw-r--r--arch/microblaze/mm/pgtable.c51
1 files changed, 15 insertions, 36 deletions
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index d31312cde6ea..784557fb28cf 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -161,24 +161,6 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
return err;
}
-void __init adjust_total_lowmem(void)
-{
-/* TBD */
-#if 0
- unsigned long max_low_mem = MAX_LOW_MEM;
-
- if (total_lowmem > max_low_mem) {
- total_lowmem = max_low_mem;
-#ifndef CONFIG_HIGHMEM
- printk(KERN_INFO "Warning, memory limited to %ld Mb, use "
- "CONFIG_HIGHMEM to reach %ld Mb\n",
- max_low_mem >> 20, total_memory >> 20);
- total_memory = total_lowmem;
-#endif /* CONFIG_HIGHMEM */
- }
-#endif
-}
-
/*
* Map in all of physical memory starting at CONFIG_KERNEL_START.
*/
@@ -206,24 +188,6 @@ void __init mapin_ram(void)
/* is x a power of 2? */
#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
-/*
- * Set up a mapping for a block of I/O.
- * virt, phys, size must all be page-aligned.
- * This should only be called before ioremap is called.
- */
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
- unsigned int size, int flags)
-{
- int i;
-
- if (virt > CONFIG_KERNEL_START && virt < ioremap_bot)
- ioremap_bot = ioremap_base = virt;
-
- /* Put it in the page tables. */
- for (i = 0; i < size; i += PAGE_SIZE)
- map_page(virt + i, phys + i, flags);
-}
-
/* Scan the real Linux page tables and return a PTE pointer for
* a virtual address in a context.
* Returns true (1) if PTE was found, zero otherwise. The pointer to
@@ -274,3 +238,18 @@ unsigned long iopa(unsigned long addr)
return pa;
}
+
+__init_refok pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address)
+{
+ pte_t *pte;
+ if (mem_init_done) {
+ pte = (pte_t *)__get_free_page(GFP_KERNEL |
+ __GFP_REPEAT | __GFP_ZERO);
+ } else {
+ pte = (pte_t *)early_get_page();
+ if (pte)
+ clear_page(pte);
+ }
+ return pte;
+}