2 files changed, 7 insertions, 10 deletions

diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c
index cfb4f9cebea..38834bbbae1 100644
--- a/arch/x86_64/kernel/asm-offsets.c
+++ b/arch/x86_64/kernel/asm-offsets.c
@@ -43,6 +43,7 @@ int main(void)
         ENTRY(irqcount);
         ENTRY(cpunumber);
         ENTRY(irqstackptr);
+        ENTRY(data_offset);
         BLANK();
 #undef ENTRY
 #ifdef CONFIG_IA32_EMULATION
@@ -66,8 +67,6 @@ int main(void)
         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
         DEFINE(pbe_next, offsetof(struct pbe, next));
         BLANK();
-#if DEBUG_STKSZ > EXCEPTION_STKSZ
-        DEFINE(DEBUG_IST, DEBUG_STACK);
-#endif
+        DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
         return 0;
 }
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 632fc0f59fc..dbdba56e8fa 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -41,6 +41,7 @@
 #include <asm/unistd.h>
 #include <asm/thread_info.h>
 #include <asm/hw_irq.h>
+#include <asm/page.h>
 
         .code64
 
@@ -674,9 +675,6 @@ ENTRY(spurious_interrupt)
 
         /* error code is on the stack already */
         /* handle NMI like exceptions that can happen everywhere */
-#ifndef DEBUG_IST
-# define DEBUG_IST 0
-#endif
         .macro paranoidentry sym, ist=0
         SAVE_ALL
         cld
@@ -695,11 +693,11 @@ ENTRY(spurious_interrupt)
         movq ORIG_RAX(%rsp),%rsi
         movq $-1,ORIG_RAX(%rsp)
         .if \ist
-        subq    $EXCEPTION_STACK_SIZE, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp)
+        subq    $EXCEPTION_STKSZ, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp)
         .endif
         call \sym
         .if \ist
-        addq    $EXCEPTION_STACK_SIZE, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp)
+        addq    $EXCEPTION_STKSZ, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp)
         .endif
         cli
         .endm
@@ -918,7 +916,7 @@ KPROBE_ENTRY(debug)
         INTR_FRAME
         pushq $0
         CFI_ADJUST_CFA_OFFSET 8         
-        paranoidentry do_debug, DEBUG_IST
+        paranoidentry do_debug, DEBUG_STACK
         jmp paranoid_exit
         CFI_ENDPROC
         .previous .text
@@ -976,7 +974,7 @@ KPROBE_ENTRY(int3)
         INTR_FRAME
         pushq $0
         CFI_ADJUST_CFA_OFFSET 8
-        paranoidentry do_int3, DEBUG_IST
+        paranoidentry do_int3, DEBUG_STACK
         jmp paranoid_exit
         CFI_ENDPROC
         .previous .text