Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

[pandora-kernel.git] / arch / powerpc / mm / hash_utils_64.c

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index a542ff5..83f534d 100644 (file)
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -649,7 +649,7 @@ static void __init htab_initialize(void)
 #ifdef CONFIG_DEBUG_PAGEALLOC
        linear_map_hash_count = memblock_end_of_DRAM() >> PAGE_SHIFT;
        linear_map_hash_slots = __va(memblock_alloc_base(linear_map_hash_count,
-                                                   1, memblock.rmo_size));
+                                                   1, ppc64_rma_size));
        memset(linear_map_hash_slots, 0, linear_map_hash_count);
 #endif /* CONFIG_DEBUG_PAGEALLOC */
 
@@ -696,7 +696,8 @@ static void __init htab_initialize(void)
 #endif /* CONFIG_U3_DART */
                BUG_ON(htab_bolt_mapping(base, base + size, __pa(base),
                                prot, mmu_linear_psize, mmu_kernel_ssize));
-       }
+       }
+       memblock_set_current_limit(MEMBLOCK_ALLOC_ANYWHERE);
 
        /*
         * If we have a memory_limit and we've allocated TCEs then we need to
@@ -1247,3 +1248,23 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
        local_irq_restore(flags);
 }
 #endif /* CONFIG_DEBUG_PAGEALLOC */
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+                               phys_addr_t first_memblock_size)
+{
+       /* We don't currently support the first MEMBLOCK not mapping 0
+        * physical on those processors
+        */
+       BUG_ON(first_memblock_base != 0);
+
+       /* On LPAR systems, the first entry is our RMA region,
+        * non-LPAR 64-bit hash MMU systems don't have a limitation
+        * on real mode access, but using the first entry works well
+        * enough. We also clamp it to 1G to avoid some funky things
+        * such as RTAS bugs etc...
+        */
+       ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
+
+       /* Finally limit subsequent allocations */
+       memblock_set_current_limit(ppc64_rma_size);
+}