X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-i386%2Fdesc.h;h=7a0e2feb9f98c532eca8461db8dcfd8f6b207c54;hb=f5223a4ce011c9dcbc6a0b413b4503e98470e753;hp=9361aff2e25c2a2bee549f054c33b50dd0142d5d;hpb=daddc0d38b3571bed170afa273a49a0eba090c1e;p=linux-2.6.git

diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h
index 9361aff2e..7a0e2feb9 100644
--- a/include/asm-i386/desc.h
+++ b/include/asm-i386/desc.h
@@ -8,10 +8,12 @@
 
 #include <linux/preempt.h>
 #include <linux/smp.h>
+#include <linux/percpu.h>
 
 #include <asm/mmu.h>
 
-extern struct desc_struct cpu_gdt_table[NR_CPUS][GDT_ENTRIES];
+extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
+DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
 
 struct Xgt_desc_struct {
 	unsigned short size;
@@ -44,14 +46,15 @@ __asm__ __volatile__ ("movw %w3,0(%2)\n\t" \
 
 static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr)
 {
-	_set_tssldt_desc(&cpu_gdt_table[cpu][entry], (int)addr, 235, 0x89);
+	_set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[entry], (int)addr,
+		offsetof(struct tss_struct, __cacheline_filler) - 1, 0x89);
 }
 
 #define set_tss_desc(cpu,addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
 
 static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int size)
 {
-	_set_tssldt_desc(&cpu_gdt_table[cpu][GDT_ENTRY_LDT], (int)addr, ((size << 3)-1), 0x82);
+	_set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_LDT], (int)addr, ((size << 3)-1), 0x82);
 }
 
 #define LDT_entry_a(info) \
@@ -85,7 +88,7 @@ static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int size)
 
 static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
 {
-#define C(i) cpu_gdt_table[cpu][GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]
+#define C(i) per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]
 	C(0); C(1); C(2);
 #undef C
 }
@@ -123,6 +126,20 @@ static inline void load_LDT(mm_context_t *pc)
 	put_cpu();
 }
 
+static inline void set_user_cs(struct desc_struct *desc, unsigned long limit)
+{
+	limit = (limit - 1) / PAGE_SIZE;
+	desc->a = limit & 0xffff;
+	desc->b = (limit & 0xf0000) | 0x00c0fb00;
+}
+
+#define load_user_cs_desc(cpu, mm) \
+    	per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_DEFAULT_USER_CS] = (mm)->context.user_cs
+
+extern void arch_add_exec_range(struct mm_struct *mm, unsigned long limit);
+extern void arch_remove_exec_range(struct mm_struct *mm, unsigned long limit);
+extern void arch_flush_exec_range(struct mm_struct *mm);
+
 #endif /* !__ASSEMBLY__ */
 
 #endif