diff options
| -rw-r--r-- | arch/i386/kernel/ldt.c | 7 | ||||
| -rw-r--r-- | include/asm-i386/desc.h | 7 |
2 files changed, 9 insertions, 5 deletions
diff --git a/arch/i386/kernel/ldt.c b/arch/i386/kernel/ldt.c index bb50afbee92..fe1ffa55587 100644 --- a/arch/i386/kernel/ldt.c +++ b/arch/i386/kernel/ldt.c @@ -177,7 +177,7 @@ 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, *lp; + __u32 entry_1, entry_2; int error; struct user_desc ldt_info; @@ -205,8 +205,6 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) goto out_unlock; } - lp = (__u32 *) ((ldt_info.entry_number << 3) + (char *) mm->context.ldt); - /* Allow LDTs to be cleared by the user. */ if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { if (oldmode || LDT_empty(&ldt_info)) { @@ -223,8 +221,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) /* Install the new entry ... */ install: - *lp = entry_1; - *(lp+1) = entry_2; + write_ldt_entry(mm->context.ldt, ldt_info.entry_number, entry_1, entry_2); error = 0; out_unlock: diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h index ccb11c03283..6df1a53c190 100644 --- a/include/asm-i386/desc.h +++ b/include/asm-i386/desc.h @@ -96,6 +96,13 @@ static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int size) (info)->seg_not_present == 1 && \ (info)->useable == 0 ) +static inline void write_ldt_entry(void *ldt, int entry, __u32 entry_a, __u32 entry_b) +{ + __u32 *lp = (__u32 *)((char *)ldt + entry*8); + *lp = entry_a; + *(lp+1) = entry_b; +} + #if TLS_SIZE != 24 # error update this code. #endif |