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static struct tss tss;
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static struct tss tss;
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struct tss *tss_p = NULL;
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struct tss *tss_p = NULL;
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/* gdtr is changed by kmp before next CPU is initialized */
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/* gdtr is changed by kmp before next CPU is initialized */
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struct ptr_16_32 gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt - BOOT_OFFSET) };
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struct ptr_16_32 bsp_bootstrap_gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt - BOOT_OFFSET) };
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struct ptr_16_32 ap_bootstrap_gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt) };
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struct ptr_16_32 gdtr = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt) };
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struct ptr_16_32 idtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(idt), .base = KA2PA((__address) idt) };
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struct ptr_16_32 idtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(idt), .base = KA2PA((__address) idt) };
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void gdt_setbase(struct descriptor *d, __address base)
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void gdt_setbase(struct descriptor *d, __address base)
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{
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{
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    d->base_0_15 = base & 0xffff;
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    d->base_0_15 = base & 0xffff;
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    /*
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    /*
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     * Update addresses in GDT and IDT to their virtual counterparts.
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     * Update addresses in GDT and IDT to their virtual counterparts.
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     */
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     */
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    gdtr.base = KA2PA(gdtr.base);
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    gdtr.base = (__address) gdt;
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    idtr.base = (__address) idt;
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    idtr.base = (__address) idt;
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    __asm__ volatile ("lgdt %0\n" : : "m" (gdtr));
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    __asm__ volatile ("lgdt %0\n" : : "m" (gdtr));
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    __asm__ volatile ("lidt %0\n" : : "m" (idtr)); 
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    __asm__ volatile ("lidt %0\n" : : "m" (idtr)); 
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    /*
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    /*