3 files changed, 86 insertions, 1 deletions

diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 44ef329531c3..ef87f889ef62 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -195,6 +195,63 @@ static inline int pmd_none_or_clear_bad(pmd_t *pmd)
         }
         return 0;
 }
+
+static inline pte_t __ptep_modify_prot_start(struct mm_struct *mm,
+                                             unsigned long addr,
+                                             pte_t *ptep)
+{
+        /*
+         * Get the current pte state, but zero it out to make it
+         * non-present, preventing the hardware from asynchronously
+         * updating it.
+         */
+        return ptep_get_and_clear(mm, addr, ptep);
+}
+
+static inline void __ptep_modify_prot_commit(struct mm_struct *mm,
+                                             unsigned long addr,
+                                             pte_t *ptep, pte_t pte)
+{
+        /*
+         * The pte is non-present, so there's no hardware state to
+         * preserve.
+         */
+        set_pte_at(mm, addr, ptep, pte);
+}
+
+#ifndef __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
+/*
+ * Start a pte protection read-modify-write transaction, which
+ * protects against asynchronous hardware modifications to the pte.
+ * The intention is not to prevent the hardware from making pte
+ * updates, but to prevent any updates it may make from being lost.
+ *
+ * This does not protect against other software modifications of the
+ * pte; the appropriate pte lock must be held over the transation.
+ *
+ * Note that this interface is intended to be batchable, meaning that
+ * ptep_modify_prot_commit may not actually update the pte, but merely
+ * queue the update to be done at some later time.  The update must be
+ * actually committed before the pte lock is released, however.
+ */
+static inline pte_t ptep_modify_prot_start(struct mm_struct *mm,
+                                           unsigned long addr,
+                                           pte_t *ptep)
+{
+        return __ptep_modify_prot_start(mm, addr, ptep);
+}
+
+/*
+ * Commit an update to a pte, leaving any hardware-controlled bits in
+ * the PTE unmodified.
+ */
+static inline void ptep_modify_prot_commit(struct mm_struct *mm,
+                                           unsigned long addr,
+                                           pte_t *ptep, pte_t pte)
+{
+        __ptep_modify_prot_commit(mm, addr, ptep, pte);
+}
+#endif /* __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION */
 #endif /* CONFIG_MMU */
 
 /*
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index a6aea79bca4f..54bbf6e04ee8 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -60,7 +60,8 @@
 #ifndef node_to_cpumask_ptr
 
 #define node_to_cpumask_ptr(v, node)                                    \
-                cpumask_t _##v = node_to_cpumask(node), *v = &_##v
+                cpumask_t _##v = node_to_cpumask(node);                 \
+                const cpumask_t *v = &_##v
 
 #define node_to_cpumask_ptr_next(v, node)                               \
                           _##v = node_to_cpumask(node)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index f054778e916c..b20409404c7d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -67,6 +67,8 @@
                 *(.rodata1)                                             \
         }                                                               \
                                                                         \
+        BUG_TABLE                                                       \
+                                                                        \
         /* PCI quirks */                                                \
         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
@@ -86,6 +88,13 @@
                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
         }                                                               \
                                                                         \
+        /* Built-in firmware blobs */                                   \
+        .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
+                VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
+                *(.builtin_fw)                                          \
+                VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
+        }                                                               \
+                                                                        \
         /* RapidIO route ops */                                         \
         .rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {        \
                 VMLINUX_SYMBOL(__start_rio_route_ops) = .;              \
@@ -93,6 +102,8 @@
                 VMLINUX_SYMBOL(__end_rio_route_ops) = .;                \
         }                                                               \
                                                                         \
+        TRACEDATA                                                       \
+                                                                        \
         /* Kernel symbol table: Normal symbols */                       \
         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
@@ -310,6 +321,7 @@
                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
                 .comment 0 : { *(.comment) }
 
+#ifdef CONFIG_GENERIC_BUG
 #define BUG_TABLE                                                       \
         . = ALIGN(8);                                                   \
         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
@@ -317,6 +329,21 @@
                 *(__bug_table)                                          \
                 __stop___bug_table = .;                                 \
         }
+#else
+#define BUG_TABLE
+#endif
+
+#ifdef CONFIG_PM_TRACE
+#define TRACEDATA                                                       \
+        . = ALIGN(4);                                                   \
+        .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
+                __tracedata_start = .;                                  \
+                *(.tracedata)                                           \
+                __tracedata_end = .;                                    \
+        }
+#else
+#define TRACEDATA
+#endif
 
 #define NOTES                                                           \
         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \