diff options
Diffstat (limited to 'include/asm-x86_64/desc.h')
| -rw-r--r-- | include/asm-x86_64/desc.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/include/asm-x86_64/desc.h b/include/asm-x86_64/desc.h index 33764869387bc..eb7723a467908 100644 --- a/include/asm-x86_64/desc.h +++ b/include/asm-x86_64/desc.h @@ -25,7 +25,7 @@ struct n_desc_struct { unsigned int a,b; }; -extern struct desc_struct cpu_gdt_table[NR_CPUS][GDT_ENTRIES]; +extern struct desc_struct cpu_gdt_table[GDT_ENTRIES]; enum { GATE_INTERRUPT = 0xE, @@ -79,6 +79,9 @@ extern struct desc_struct default_ldt[]; extern struct gate_struct idt_table[]; extern struct desc_ptr cpu_gdt_descr[]; +/* the cpu gdt accessor */ +#define cpu_gdt(_cpu) ((struct desc_struct *)cpu_gdt_descr[_cpu].address) + static inline void _set_gate(void *adr, unsigned type, unsigned long func, unsigned dpl, unsigned ist) { struct gate_struct s; @@ -114,6 +117,11 @@ static inline void set_system_gate(int nr, void *func) _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 3, 0); } +static inline void set_system_gate_ist(int nr, void *func, unsigned ist) +{ + _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 3, ist); +} + static inline void set_tssldt_descriptor(void *ptr, unsigned long tss, unsigned type, unsigned size) { @@ -139,20 +147,20 @@ static inline void set_tss_desc(unsigned cpu, void *addr) * -1? seg base+limit should be pointing to the address of the * last valid byte */ - set_tssldt_descriptor(&cpu_gdt_table[cpu][GDT_ENTRY_TSS], + set_tssldt_descriptor(&cpu_gdt(cpu)[GDT_ENTRY_TSS], (unsigned long)addr, DESC_TSS, IO_BITMAP_OFFSET + IO_BITMAP_BYTES + sizeof(unsigned long) - 1); } static inline void set_ldt_desc(unsigned cpu, void *addr, int size) { - set_tssldt_descriptor(&cpu_gdt_table[cpu][GDT_ENTRY_LDT], (unsigned long)addr, + set_tssldt_descriptor(&cpu_gdt(cpu)[GDT_ENTRY_LDT], (unsigned long)addr, DESC_LDT, size * 8 - 1); } static inline void set_seg_base(unsigned cpu, int entry, void *base) { - struct desc_struct *d = &cpu_gdt_table[cpu][entry]; + struct desc_struct *d = &cpu_gdt(cpu)[entry]; u32 addr = (u32)(u64)base; BUG_ON((u64)base >> 32); d->base0 = addr & 0xffff; @@ -194,7 +202,7 @@ static inline void set_seg_base(unsigned cpu, int entry, void *base) static inline void load_TLS(struct thread_struct *t, unsigned int cpu) { - u64 *gdt = (u64 *)(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN); + u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN); gdt[0] = t->tls_array[0]; gdt[1] = t->tls_array[1]; gdt[2] = t->tls_array[2]; |