Changeset 1f5714e in mainline

Timestamp:

2011-12-11T16:52:11Z (12 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0e78394

Parents:

d8f1545

Message:

sparc64: Kernel non-identity needs to be resolved by walking page tables.

File:

• kernel/arch/sparc64/src/mm/sun4u/tlb.c (modified) (1 diff)

kernel/arch/sparc64/src/mm/sun4u/tlb.c

@@ -258 +258 @@
                             "Dereferencing NULL pointer.");
                 } else if (page_8k >= end_of_identity) {
-                        /*
-                         * The kernel is accessing the I/O space.
-                         * We still do identity mapping for I/O,
-                         * but without caching.
-                         */
-                        dtlb_insert_mapping(page_8k, KA2PA(page_8k),
-                            PAGESIZE_8K, false, false);
-                        return;
+                        /* Kernel non-identity, fall through. */
+                } else {
+                        do_fast_data_access_mmu_miss_fault(istate, tag,
+                    "Unexpected kernel page fault.");
                 }
-                do_fast_data_access_mmu_miss_fault(istate, tag, "Unexpected "
-                    "kernel page fault.");
         }