x86: modify get_desc_base

This patch makes get_desc_base() receive a struct desc_struct,
and then uses its internal fields to compute the base address.
This is done at both i386 and x86_64, and then it is moved
to common header

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c
index 74d2b65a82eb..98f428be8e8c 100644
--- a/arch/x86/kernel/tls.c
+++ b/arch/x86/kernel/tls.c
@@ -112,7 +112,7 @@ int do_get_thread_area(struct task_struct *p, int idx,
 
         memset(&info, 0, sizeof(struct user_desc));
         info.entry_number = idx;
-        info.base_addr = get_desc_base((void *)desc);
+        info.base_addr = get_desc_base((struct desc_struct *)desc);
         info.limit = GET_LIMIT(desc);
         info.seg_32bit = GET_32BIT(desc);
         info.contents = GET_CONTENTS(desc);
diff --git a/arch/x86/mm/fault_32.c b/arch/x86/mm/fault_32.c
index 6056c6d71835..ef5ab2b925c4 100644
--- a/arch/x86/mm/fault_32.c
+++ b/arch/x86/mm/fault_32.c
@@ -115,7 +115,7 @@ static inline unsigned long get_segment_eip(struct pt_regs *regs,
         }
 
         /* Decode the code segment base from the descriptor */
-        base = get_desc_base((unsigned long *)desc);
+        base = get_desc_base((struct desc_struct *)desc);
 
         if (seg & (1<<2)) { 
                 mutex_unlock(&current->mm->context.lock);