| 61,10 → 61,10 |
|---|
| bitmap_initialize(&iomap, CPU->arch.tss->iomap, TSS_IOMAP_SIZE * 8); |
| bitmap_copy(&iomap, &TASK->arch.iomap, TASK->arch.iomap.bits); |
| /* |
| * It is safe to set the trailing four bits because of the extra |
| * It is safe to set the trailing eight bits because of the extra |
| * convenience byte in TSS_IOMAP_SIZE. |
| */ |
| bitmap_set_range(&iomap, TASK->arch.iomap.bits, 4); |
| bitmap_set_range(&iomap, TASK->arch.iomap.bits, 8); |
| } |
| spinlock_unlock(&TASK->lock); |
| |
| 73,6 → 73,13 |
|---|
| gdt_p = (descriptor_t *) cpugdtr.base; |
| gdt_setlimit(&gdt_p[TSS_DES], TSS_BASIC_SIZE + BITS2BYTES(bits) - 1); |
| gdtr_load(&cpugdtr); |
| |
| /* |
| * Before we load new TSS limit, the current TSS descriptor |
| * type must be changed to describe inactive TSS. |
| */ |
| gdt_p[TSS_DES].access = AR_PRESENT | AR_TSS | DPL_KERNEL; |
| tr_load(selector(TSS_DES)); |
| } |
| |
| /** Perform ia32 specific tasks needed before the new thread is scheduled. |