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#include <mm/slab.h>
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#include <mm/slab.h>
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#include <arch/pm.h>
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#include <arch/pm.h>
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#include <errno.h>
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#include <errno.h>
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#include <arch/cpu.h>
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#include <arch/cpu.h>
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#include <arch.h>
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#include <arch.h>
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#include <align.h>
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/** Enable I/O space range for task.
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/** Enable I/O space range for task.
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 *
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 *
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 * Interrupts are disabled and task is locked.
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 * Interrupts are disabled and task is locked.
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 *
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 *
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        bitmap_copy(&iomap, &TASK->arch.iomap, TASK->arch.iomap.bits);
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        bitmap_copy(&iomap, &TASK->arch.iomap, TASK->arch.iomap.bits);
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        /*
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        /*
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         * It is safe to set the trailing eight bits because of the extra
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         * It is safe to set the trailing eight bits because of the extra
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         * convenience byte in TSS_IOMAP_SIZE.
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         * convenience byte in TSS_IOMAP_SIZE.
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         */
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         */
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        bitmap_set_range(&iomap, TASK->arch.iomap.bits, 8);
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        bitmap_set_range(&iomap, ALIGN_UP(TASK->arch.iomap.bits, 8), 8);
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    }
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    }
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    spinlock_unlock(&TASK->lock);
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    spinlock_unlock(&TASK->lock);
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    /*
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    /* Second, adjust TSS segment limit. */
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     * Second, adjust TSS segment limit.
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     * Take the extra ending byte will all bits set into account.
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     */
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    gdtr_store(&cpugdtr);
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    gdtr_store(&cpugdtr);
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    gdt_p = (descriptor_t *) cpugdtr.base;
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    gdt_p = (descriptor_t *) cpugdtr.base;
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    gdt_tss_setlimit(&gdt_p[TSS_DES], TSS_BASIC_SIZE + BITS2BYTES(bits) - 1);
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    gdt_tss_setlimit(&gdt_p[TSS_DES], TSS_BASIC_SIZE + BITS2BYTES(bits));
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    gdtr_load(&cpugdtr);
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    gdtr_load(&cpugdtr);
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    /*
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    /*
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         * Before we load new TSS limit, the current TSS descriptor
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         * Before we load new TSS limit, the current TSS descriptor
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         * type must be changed to describe inactive TSS.
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         * type must be changed to describe inactive TSS.