[PATCH 15/19] modify get_desc_base

[Glauber de Oliveira Costa]

This patch makes get_desc_base() receive a struct desc_struct,
and then uses its internal fields to compute the base address.

Signed-off-by: Glauber de Oliveira Costa <[EMAIL PROTECTED]>
---
 arch/x86/kernel/tls.c  |    2 +-
 arch/x86/mm/fault_32.c |    2 +-
 include/asm-x86/desc.h |    8 ++------
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c
index 74d2b65..98f428b 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 6056c6d..ef5ab2b 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);
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h
index 926d6f8..3480cb1 100644
--- a/include/asm-x86/desc.h
+++ b/include/asm-x86/desc.h
@@ -55,13 +55,9 @@ static inline void load_LDT(mm_context_t *pc)
        preempt_enable();
 }
 
-static inline unsigned long get_desc_base(unsigned long *desc)
+static inline unsigned long get_desc_base(struct desc_struct *desc)
 {
-       unsigned long base;
-       base = ((desc[0] >> 16)  & 0x0000ffff) |
-               ((desc[1] << 16) & 0x00ff0000) |
-               (desc[1] & 0xff000000);
-       return base;
+       return desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24);
 }
 
 #else
-- 
1.4.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/