1 files changed, 29 insertions, 15 deletions

diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index e835b4eea70b..c32ca19d591a 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -11,14 +11,15 @@
 #include <linux/init.h>
 #include <linux/linkage.h>
 #include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
+#include <asm/page_types.h>
+#include <asm/pgtable_types.h>
 #include <asm/desc.h>
 #include <asm/cache.h>
 #include <asm/thread_info.h>
 #include <asm/asm-offsets.h>
 #include <asm/setup.h>
 #include <asm/processor-flags.h>
+#include <asm/percpu.h>
 
 /* Physical address */
 #define pa(X) ((X) - __PAGE_OFFSET)
@@ -429,14 +430,34 @@ is386:	movl $2,%ecx		# set MP
         ljmp $(__KERNEL_CS),$1f
 1:      movl $(__KERNEL_DS),%eax        # reload all the segment registers
         movl %eax,%ss                   # after changing gdt.
-        movl %eax,%fs                   # gets reset once there's real percpu
 
         movl $(__USER_DS),%eax          # DS/ES contains default USER segment
         movl %eax,%ds
         movl %eax,%es
 
-        xorl %eax,%eax                  # Clear GS and LDT
+        movl $(__KERNEL_PERCPU), %eax
+        movl %eax,%fs                   # set this cpu's percpu
+
+#ifdef CONFIG_CC_STACKPROTECTOR
+        /*
+         * The linker can't handle this by relocation.  Manually set
+         * base address in stack canary segment descriptor.
+         */
+        cmpb $0,ready
+        jne 1f
+        movl $per_cpu__gdt_page,%eax
+        movl $per_cpu__stack_canary,%ecx
+        subl $20, %ecx
+        movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax)
+        shrl $16, %ecx
+        movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax)
+        movb %ch, 8 * GDT_ENTRY_STACK_CANARY + 7(%eax)
+1:
+#endif
+        movl $(__KERNEL_STACK_CANARY),%eax
         movl %eax,%gs
+
+        xorl %eax,%eax                  # Clear LDT
         lldt %ax
 
         cld                     # gcc2 wants the direction flag cleared at all times
@@ -446,8 +467,6 @@ is386:	movl $2,%ecx		# set MP
         movb $1, ready
         cmpb $0,%cl             # the first CPU calls start_kernel
         je   1f
-        movl $(__KERNEL_PERCPU), %eax
-        movl %eax,%fs           # set this cpu's percpu
         movl (stack_start), %esp
 1:
 #endif /* CONFIG_SMP */
@@ -548,12 +567,8 @@ early_fault:
         pushl %eax
         pushl %edx              /* trapno */
         pushl $fault_msg
-#ifdef CONFIG_EARLY_PRINTK
-        call early_printk
-#else
         call printk
 #endif
-#endif
         call dump_stack
 hlt_loop:
         hlt
@@ -580,11 +595,10 @@ ignore_int:
         pushl 32(%esp)
         pushl 40(%esp)
         pushl $int_msg
-#ifdef CONFIG_EARLY_PRINTK
-        call early_printk
-#else
         call printk
-#endif
+
+        call dump_stack
+
         addl $(5*4),%esp
         popl %ds
         popl %es
@@ -660,7 +674,7 @@ early_recursion_flag:
         .long 0
 
 int_msg:
-        .asciz "Unknown interrupt or fault at EIP %p %p %p\n"
+        .asciz "Unknown interrupt or fault at: %p %p %p\n"
 
 fault_msg:
 /* fault info: */