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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
commit5af725026fe902bf81f1b90b1b9d9ee4b9e1eb6a (patch)
tree1c413a4e6e24fabc8fb0e09f8050673212e0c8e1
parent25deca53e9b74a899efd3ae1f4493f4f2ce36846 (diff)
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x86: modify write_ldt function
This patch modifies the write_ldt() function to make use of the new struct desc_struct instead of entry_1 and entry_2 entries 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>
-rw-r--r--arch/x86/kernel/ldt.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index a8cdca3..7eb0c8a 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -186,7 +186,7 @@ static int read_default_ldt(void __user *ptr, unsigned long bytecount)
static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
{
struct mm_struct *mm = current->mm;
- __u32 entry_1, entry_2;
+ struct desc_struct ldt;
int error;
struct user_desc ldt_info;
@@ -218,21 +218,20 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
/* Allow LDTs to be cleared by the user. */
if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
if (oldmode || LDT_empty(&ldt_info)) {
- entry_1 = 0;
- entry_2 = 0;
+ memset(&ldt, 0, sizeof(ldt));
goto install;
}
}
- entry_1 = LDT_entry_a(&ldt_info);
- entry_2 = LDT_entry_b(&ldt_info);
+ ldt.a = LDT_entry_a(&ldt_info);
+ ldt.b = LDT_entry_b(&ldt_info);
if (oldmode)
- entry_2 &= ~(1 << 20);
+ ldt.avl = 0;
/* Install the new entry ... */
install:
- write_ldt_entry(mm->context.ldt, ldt_info.entry_number, entry_1,
- entry_2);
+ write_ldt_entry(mm->context.ldt, ldt_info.entry_number,
+ ldt.a, ldt.b);
error = 0;
out_unlock: