27 files changed, 138 insertions, 37 deletions

diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index 24d3c91e9812..6ec91c00d84d 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -23,7 +23,7 @@
 #include <asm/time.h>
 
 #ifdef CONFIG_X86_64
-DEFINE_VVAR(volatile unsigned long, jiffies) = INITIAL_JIFFIES;
+__visible DEFINE_VVAR(volatile unsigned long, jiffies) = INITIAL_JIFFIES;
 #endif
 
 unsigned long profile_pc(struct pt_regs *regs)
diff --git a/arch/x86/lib/memcpy_32.c b/arch/x86/lib/memcpy_32.c
index e78761d6b7f8..a404b4b75533 100644
--- a/arch/x86/lib/memcpy_32.c
+++ b/arch/x86/lib/memcpy_32.c
@@ -4,7 +4,7 @@
 #undef memcpy
 #undef memset
 
-void *memcpy(void *to, const void *from, size_t n)
+__visible void *memcpy(void *to, const void *from, size_t n)
 {
 #ifdef CONFIG_X86_USE_3DNOW
         return __memcpy3d(to, from, n);
@@ -14,13 +14,13 @@ void *memcpy(void *to, const void *from, size_t n)
 }
 EXPORT_SYMBOL(memcpy);
 
-void *memset(void *s, int c, size_t count)
+__visible void *memset(void *s, int c, size_t count)
 {
         return __memset(s, c, count);
 }
 EXPORT_SYMBOL(memset);
 
-void *memmove(void *dest, const void *src, size_t n)
+__visible void *memmove(void *dest, const void *src, size_t n)
 {
         int d0,d1,d2,d3,d4,d5;
         char *ret = dest;
diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 39febb214e8c..9471b9456f25 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -88,7 +88,7 @@ struct ts5500_sbc {
 static const struct {
         const char * const string;
         const ssize_t offset;
-} ts5500_signatures[] __initdata = {
+} ts5500_signatures[] __initconst = {
         { "TS-5x00 AMD Elan", 0xb14 },
 };
 
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index fd14be1d1472..9206ac7961a5 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -2,6 +2,8 @@
 # Building vDSO images for x86.
 #
 
+KBUILD_CFLAGS += $(DISABLE_LTO)
+
 VDSO64-$(CONFIG_X86_64)         := y
 VDSOX32-$(CONFIG_X86_X32_ABI)   := y
 VDSO32-$(CONFIG_X86_32)         := y
@@ -35,7 +37,8 @@ export CPPFLAGS_vdso.lds += -P -C
 
 VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
                         -Wl,--no-undefined \
-                        -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
+                        -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 \
+                        $(DISABLE_LTO)
 
 $(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
 
@@ -127,7 +130,7 @@ vdso32.so-$(VDSO32-y)		+= sysenter
 vdso32-images                   = $(vdso32.so-y:%=vdso32-%.so)
 
 CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
-VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-soname=linux-gate.so.1
+VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-m,elf_i386 -Wl,-soname=linux-gate.so.1
 
 # This makes sure the $(obj) subdirectory exists even though vdso32/
 # is not a kbuild sub-make subdirectory.
@@ -181,7 +184,8 @@ quiet_cmd_vdso = VDSO    $@
                        -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
                  sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
 
-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
+VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
+                $(LTO_CFLAGS)
 GCOV_PROFILE := n
 
 #
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 1b5e8e46226d..7160c43c59fc 100644
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -584,7 +584,7 @@ static struct platform_driver dcdbas_driver = {
         .remove         = dcdbas_remove,
 };
 
-static const struct platform_device_info dcdbas_dev_info __initdata = {
+static const struct platform_device_info dcdbas_dev_info __initconst = {
         .name           = DRIVER_NAME,
         .id             = -1,
         .dma_mask       = DMA_BIT_MASK(32),
diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index 769d265b221b..deb7f4bcdb7b 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -21,7 +21,7 @@
 
 #include "pnpbios.h"
 
-static struct {
+__visible struct {
         u16 offset;
         u16 segment;
 } pnp_bios_callpoint;
@@ -41,6 +41,7 @@ asmlinkage void pnp_bios_callfunc(void);
 
 __asm__(".text                  \n"
         __ALIGN_STR "\n"
+        ".globl pnp_bios_callfunc\n"
         "pnp_bios_callfunc:\n"
         "       pushl %edx      \n"
         "       pushl %ecx      \n"
@@ -66,9 +67,9 @@ static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
  * after PnP BIOS oopses.
  */
 
-u32 pnp_bios_fault_esp;
-u32 pnp_bios_fault_eip;
-u32 pnp_bios_is_utter_crap = 0;
+__visible u32 pnp_bios_fault_esp;
+__visible u32 pnp_bios_fault_eip;
+__visible u32 pnp_bios_is_utter_crap = 0;
 
 static spinlock_t pnp_bios_lock;
 
diff --git a/include/linux/init.h b/include/linux/init.h
index e1688802964f..a3ba27076342 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -163,6 +163,23 @@ extern bool initcall_debug;
 
 #ifndef __ASSEMBLY__
 
+#ifdef CONFIG_LTO
+/* Work around a LTO gcc problem: when there is no reference to a variable
+ * in a module it will be moved to the end of the program. This causes
+ * reordering of initcalls which the kernel does not like.
+ * Add a dummy reference function to avoid this. The function is
+ * deleted by the linker.
+ */
+#define LTO_REFERENCE_INITCALL(x) \
+        ; /* yes this is needed */                      \
+        static __used __exit void *reference_##x(void)  \
+        {                                               \
+                return &x;                              \
+        }
+#else
+#define LTO_REFERENCE_INITCALL(x)
+#endif
+
 /* initcalls are now grouped by functionality into separate 
  * subsections. Ordering inside the subsections is determined
  * by link order. 
@@ -175,7 +192,8 @@ extern bool initcall_debug;
 
 #define __define_initcall(fn, id) \
         static initcall_t __initcall_##fn##id __used \
-        __attribute__((__section__(".initcall" #id ".init"))) = fn
+        __attribute__((__section__(".initcall" #id ".init"))) = fn; \
+        LTO_REFERENCE_INITCALL(__initcall_##fn##id)
 
 /*
  * Early initcalls run before initializing SMP.
diff --git a/include/linux/io.h b/include/linux/io.h
index f4f42faec686..8a18e75600cc 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -24,7 +24,7 @@
 
 struct device;
 
-void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
+__visible void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
 void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
 
 #ifdef CONFIG_MMU
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index a6a42dd02466..34a513a2727b 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -12,9 +12,9 @@
 #endif
 
 #ifdef __cplusplus
-#define CPP_ASMLINKAGE extern "C"
+#define CPP_ASMLINKAGE extern "C" __visible
 #else
-#define CPP_ASMLINKAGE
+#define CPP_ASMLINKAGE __visible
 #endif
 
 #ifndef asmlinkage
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 060e5137fd80..008388f920d7 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -265,7 +265,7 @@ extern void lockdep_info(void);
 extern void lockdep_reset(void);
 extern void lockdep_reset_lock(struct lockdep_map *lock);
 extern void lockdep_free_key_range(void *start, unsigned long size);
-extern void lockdep_sys_exit(void);
+extern asmlinkage void lockdep_sys_exit(void);
 
 extern void lockdep_off(void);
 extern void lockdep_on(void);
diff --git a/kernel/Makefile b/kernel/Makefile
index 4fd847488b76..f2a8b6246ce9 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -18,6 +18,9 @@ CFLAGS_REMOVE_cgroup-debug.o = -pg
 CFLAGS_REMOVE_irq_work.o = -pg
 endif
 
+# cond_syscall is currently not LTO compatible
+CFLAGS_sys_ni.o = $(DISABLE_LTO)
+
 obj-y += sched/
 obj-y += locking/
 obj-y += power/
diff --git a/kernel/extable.c b/kernel/extable.c
index 763faf037ec1..d8a6446adbcb 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -36,7 +36,7 @@ extern struct exception_table_entry __start___ex_table[];
 extern struct exception_table_entry __stop___ex_table[];
 
 /* Cleared by build time tools if the table is already sorted. */
-u32 __initdata main_extable_sort_needed = 1;
+u32 __initdata __visible main_extable_sort_needed = 1;
 
 /* Sort the kernel's built-in exception table */
 void __init sort_main_extable(void)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index bf0c6b0dd9c5..b0e9467922e1 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2557,7 +2557,7 @@ static void __trace_hardirqs_on_caller(unsigned long ip)
         debug_atomic_inc(hardirqs_on_events);
 }
 
-void trace_hardirqs_on_caller(unsigned long ip)
+__visible void trace_hardirqs_on_caller(unsigned long ip)
 {
         time_hardirqs_on(CALLER_ADDR0, ip);
 
@@ -2610,7 +2610,7 @@ EXPORT_SYMBOL(trace_hardirqs_on);
 /*
  * Hardirqs were disabled:
  */
-void trace_hardirqs_off_caller(unsigned long ip)
+__visible void trace_hardirqs_off_caller(unsigned long ip)
 {
         struct task_struct *curr = current;
 
@@ -4188,7 +4188,7 @@ void debug_show_held_locks(struct task_struct *task)
 }
 EXPORT_SYMBOL_GPL(debug_show_held_locks);
 
-void lockdep_sys_exit(void)
+asmlinkage void lockdep_sys_exit(void)
 {
         struct task_struct *curr = current;
 
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
index 14fe72cc8ce7..bc73d33c6760 100644
--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c
@@ -75,8 +75,7 @@ EXPORT_SYMBOL(__mutex_init);
  * We also put the fastpath first in the kernel image, to make sure the
  * branch is predicted by the CPU as default-untaken.
  */
-static __used noinline void __sched
-__mutex_lock_slowpath(atomic_t *lock_count);
+__visible void __sched __mutex_lock_slowpath(atomic_t *lock_count);
 
 /**
  * mutex_lock - acquire the mutex
@@ -189,7 +188,8 @@ static inline int mutex_can_spin_on_owner(struct mutex *lock)
 }
 #endif
 
-static __used noinline void __sched __mutex_unlock_slowpath(atomic_t *lock_count);
+__visible __used noinline
+void __sched __mutex_unlock_slowpath(atomic_t *lock_count);
 
 /**
  * mutex_unlock - release the mutex
@@ -716,7 +716,7 @@ __mutex_unlock_common_slowpath(atomic_t *lock_count, int nested)
 /*
  * Release the lock, slowpath:
  */
-static __used noinline void
+__visible void
 __mutex_unlock_slowpath(atomic_t *lock_count)
 {
         __mutex_unlock_common_slowpath(lock_count, 1);
@@ -773,7 +773,7 @@ int __sched mutex_lock_killable(struct mutex *lock)
 }
 EXPORT_SYMBOL(mutex_lock_killable);
 
-static __used noinline void __sched
+__visible void __sched
 __mutex_lock_slowpath(atomic_t *lock_count)
 {
         struct mutex *lock = container_of(lock_count, struct mutex, count);
diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c
index 19c5fa95e0b4..1d66e08e897d 100644
--- a/kernel/locking/rwsem-xadd.c
+++ b/kernel/locking/rwsem-xadd.c
@@ -143,6 +143,7 @@ __rwsem_do_wake(struct rw_semaphore *sem, enum rwsem_wake_type wake_type)
 /*
  * wait for the read lock to be granted
  */
+__visible
 struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
 {
         long count, adjustment = -RWSEM_ACTIVE_READ_BIAS;
@@ -190,6 +191,7 @@ struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
 /*
  * wait until we successfully acquire the write lock
  */
+__visible
 struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
 {
         long count, adjustment = -RWSEM_ACTIVE_WRITE_BIAS;
@@ -252,6 +254,7 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
  * handle waking up a waiter on the semaphore
  * - up_read/up_write has decremented the active part of count if we come here
  */
+__visible
 struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
 {
         unsigned long flags;
@@ -272,6 +275,7 @@ struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
  * - caller incremented waiting part of count and discovered it still negative
  * - just wake up any readers at the front of the queue
  */
+__visible
 struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
 {
         unsigned long flags;
diff --git a/kernel/module.c b/kernel/module.c
index ca2c1aded7ee..8dc7f5e80dd8 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1948,6 +1948,10 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
 
                 switch (sym[i].st_shndx) {
                 case SHN_COMMON:
+                        /* Ignore common symbols */
+                        if (!strncmp(name, "__gnu_lto", 9))
+                                break;
+
                         /* We compiled with -fno-common.  These are not
                            supposed to happen.  */
                         pr_debug("Common symbol: %s\n", name);
diff --git a/kernel/panic.c b/kernel/panic.c
index 2270cfd1d6be..cca8a913ae7c 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -459,7 +459,7 @@ EXPORT_SYMBOL(warn_slowpath_null);
  * Called when gcc's -fstack-protector feature is used, and
  * gcc detects corruption of the on-stack canary value
  */
-void __stack_chk_fail(void)
+__visible void __stack_chk_fail(void)
 {
         panic("stack-protector: Kernel stack is corrupted in: %p\n",
                 __builtin_return_address(0));
diff --git a/kernel/timer.c b/kernel/timer.c
index accfd241b9e5..d78de047599b 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -52,7 +52,7 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/timer.h>
 
-u64 jiffies_64 __cacheline_aligned_in_smp = INITIAL_JIFFIES;
+__visible u64 jiffies_64 __cacheline_aligned_in_smp = INITIAL_JIFFIES;
 
 EXPORT_SYMBOL(jiffies_64);
 
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 2aefbee93a6d..887ef88b0bc7 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -498,14 +498,14 @@ void trace_hardirqs_off(void)
 }
 EXPORT_SYMBOL(trace_hardirqs_off);
 
-void trace_hardirqs_on_caller(unsigned long caller_addr)
+__visible void trace_hardirqs_on_caller(unsigned long caller_addr)
 {
         if (!preempt_trace() && irq_trace())
                 stop_critical_timing(CALLER_ADDR0, caller_addr);
 }
 EXPORT_SYMBOL(trace_hardirqs_on_caller);
 
-void trace_hardirqs_off_caller(unsigned long caller_addr)
+__visible void trace_hardirqs_off_caller(unsigned long caller_addr)
 {
         if (!preempt_trace() && irq_trace())
                 start_critical_timing(CALLER_ADDR0, caller_addr);
diff --git a/lib/string.c b/lib/string.c
index e5878de4f101..9b1f9062a202 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -648,7 +648,7 @@ EXPORT_SYMBOL(memmove);
  * @count: The size of the area.
  */
 #undef memcmp
-int memcmp(const void *cs, const void *ct, size_t count)
+__visible int memcmp(const void *cs, const void *ct, size_t count)
 {
         const unsigned char *su1, *su2;
         int res = 0;
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 547e15daf03d..93a0da26582b 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -155,6 +155,15 @@ ld-option = $(call try-run,\
 # Important: no spaces around options
 ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))
 
+# ld-version
+# Usage: $(call ld-version)
+# Note this is mainly for HJ Lu's 3 number binutil versions
+ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
+
+# ld-ifversion
+# Usage:  $(call ld-ifversion, -ge, 22252, y)
+ld-ifversion = $(shell [ $(call ld-version) $(1) $(2) ] && echo $(3))
+
 ######
 
 ###
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d5d859c80729..9f0ee22b914f 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -198,7 +198,7 @@ $(multi-objs-y:.o=.s)   : modname = $(modname-multi)
 $(multi-objs-y:.o=.lst) : modname = $(modname-multi)
 
 quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
-cmd_cc_s_c       = $(CC) $(c_flags) -fverbose-asm -S -o $@ $<
+cmd_cc_s_c       = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
 
 $(obj)/%.s: $(src)/%.c FORCE
         $(call if_changed_dep,cc_s_c)
diff --git a/scripts/gcc-ld b/scripts/gcc-ld
new file mode 100644
index 000000000000..cadab9a13ed7
--- /dev/null
+++ b/scripts/gcc-ld
@@ -0,0 +1,29 @@
+#!/bin/sh
+# run gcc with ld options
+# used as a wrapper to execute link time optimizations
+# yes virginia, this is not pretty
+
+ARGS="-nostdlib"
+
+while [ "$1" != "" ] ; do
+        case "$1" in
+        -save-temps|-m32|-m64) N="$1" ;;
+        -r) N="$1" ;;
+        -[Wg]*) N="$1" ;;
+        -[olv]|-[Ofd]*|-nostdlib) N="$1" ;;
+        --end-group|--start-group)
+                 N="-Wl,$1" ;;
+        -[RTFGhIezcbyYu]*|\
+--script|--defsym|-init|-Map|--oformat|-rpath|\
+-rpath-link|--sort-section|--section-start|-Tbss|-Tdata|-Ttext|\
+--version-script|--dynamic-list|--version-exports-symbol|--wrap|-m)
+                A="$1" ; shift ; N="-Wl,$A,$1" ;;
+        -[m]*) N="$1" ;;
+        -*) N="-Wl,$1" ;;
+        *)  N="$1" ;;
+        esac
+        ARGS="$ARGS $N"
+        shift
+done
+
+exec $CC $ARGS
diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
new file mode 100755
index 000000000000..198580d245e0
--- /dev/null
+++ b/scripts/ld-version.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/awk -f
+# extract linker version number from stdin and turn into single number
+        {
+        gsub(".*)", "");
+        split($1,a, ".");
+        print a[1]*10000000 + a[2]*100000 + a[3]*10000 + a[4]*100 + a[5];
+        exit
+        }
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 99a45fdc1bbf..066355673930 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -623,7 +623,10 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
 
         switch (sym->st_shndx) {
         case SHN_COMMON:
-                warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
+                if (!strncmp(symname, "__gnu_lto_", sizeof("__gnu_lto_")-1)) {
+                        /* Should warn here, but modpost runs before the linker */
+                } else
+                        warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
                 break;
         case SHN_UNDEF:
                 /* undefined symbol */
@@ -849,6 +852,7 @@ static const char *section_white_list[] =
         ".xt.lit",         /* xtensa */
         ".arcextmap*",                  /* arc */
         ".gnu.linkonce.arcext*",        /* arc : modules */
+        ".gnu.lto*",
         NULL
 };
 
@@ -1455,6 +1459,10 @@ static void check_section_mismatch(const char *modname, struct elf_info *elf,
                 to = find_elf_symbol(elf, r->r_addend, sym);
                 tosym = sym_name(elf, to);
 
+                if (!strncmp(fromsym, "reference___initcall",
+                                sizeof("reference___initcall")-1))
+                        return;
+
                 /* check whitelist - we may ignore it */
                 if (secref_whitelist(mismatch,
                                         fromsec, fromsym, tosec, tosym)) {
@@ -1693,6 +1701,19 @@ static void check_sec_ref(struct module *mod, const char *modname,
         }
 }
 
+static char *remove_dot(char *s)
+{
+        char *end;
+        int n = strcspn(s, ".");
+
+        if (n > 0 && s[n] != 0) {
+                strtoul(s + n + 1, &end, 10);
+                if  (end > s + n + 1 && (*end == '.' || *end == 0))
+                        s[n] = 0;
+        }
+        return s;
+}
+
 static void read_symbols(char *modname)
 {
         const char *symname;
@@ -1731,7 +1752,7 @@ static void read_symbols(char *modname)
         }
 
         for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
-                symname = info.strtab + sym->st_name;
+                symname = remove_dot(info.strtab + sym->st_name);
 
                 handle_modversions(mod, &info, sym, symname);
                 handle_moddevtable(mod, &info, sym, symname);
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 51207e4d5f8b..168b43dc0a59 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -127,7 +127,7 @@ struct elf_info {
         Elf_Section  export_gpl_sec;
         Elf_Section  export_unused_gpl_sec;
         Elf_Section  export_gpl_future_sec;
-        const char   *strtab;
+        char         *strtab;
         char         *modinfo;
         unsigned int modinfo_len;
 
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 03a0381b1cb7..b5ec7fb986f6 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -102,7 +102,7 @@ static void kvm_release_pfn_dirty(pfn_t pfn);
 static void mark_page_dirty_in_slot(struct kvm *kvm,
                                     struct kvm_memory_slot *memslot, gfn_t gfn);
 
-bool kvm_rebooting;
+__visible bool kvm_rebooting;
 EXPORT_SYMBOL_GPL(kvm_rebooting);
 
 static bool largepages_enabled = true;