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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-30 13:31:13 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:31:13 +0100
commit80fbb69a8d1268ef48dfe21da80e68cb01922f31 (patch)
tree6cc2d5d0fdc40eb53f74e36c5557fa24f89edce0 /arch/x86
parent5af725026fe902bf81f1b90b1b9d9ee4b9e1eb6a (diff)
x86: introduce fill_ldt
This patch introduces fill_ldt(), which populates a ldt descriptor from a user_desc in once, instead of relying in the LDT_entry_a and LDT_entry_b macros 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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/ldt.c3
-rw-r--r--arch/x86/kernel/process_64.c3
-rw-r--r--arch/x86/kernel/tls.c7
3 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 7eb0c8a45734..3e872b468533 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -223,8 +223,7 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
}
}
- ldt.a = LDT_entry_a(&ldt_info);
- ldt.b = LDT_entry_b(&ldt_info);
+ fill_ldt(&ldt, &ldt_info);
if (oldmode)
ldt.avl = 0;
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 86c310acc989..f91521e26335 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -457,8 +457,7 @@ static inline void set_32bit_tls(struct task_struct *t, int tls, u32 addr)
};
struct desc_struct *desc = (void *)t->thread.tls_array;
desc += tls;
- desc->a = LDT_entry_a(&ud);
- desc->b = LDT_entry_b(&ud);
+ fill_ldt(desc, &ud);
}
static inline u32 read_32bit_tls(struct task_struct *t, int tls)
diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c
index 67a377621b12..74d2b65a82eb 100644
--- a/arch/x86/kernel/tls.c
+++ b/arch/x86/kernel/tls.c
@@ -67,10 +67,9 @@ int do_set_thread_area(struct task_struct *p, int idx,
if (LDT_empty(&info)) {
desc[0] = 0;
desc[1] = 0;
- } else {
- desc[0] = LDT_entry_a(&info);
- desc[1] = LDT_entry_b(&info);
- }
+ } else
+ fill_ldt((struct desc_struct *)desc, &info);
+
if (t == &current->thread)
load_TLS(t, cpu);