Re: Handle kernel page faults using task gate

[Ingo Molnar]

* eliad lubovsky <eliadl@xxxxxxx> wrote:

> How do I clear the 'busy' bit?
> I set my TSS descriptor with
> __set_tss_desc(cpu, GDT_ENTRY_PAGE_FAULT_TSS, &pagefault_tss);

i suspect you have to clear the busy bit in the pagefault handler 
itself. The CPU marks it as busy upon fault. I guess it would be OK to 
just do the above __set_tss_desc() for _every_ pagefault, that too will 
clear the busy bit, but you are probably better off just clearing that 
bit manually:

    cpu_gdt_table[cpu][GDT_ENTRY_TSS].b &= 0xfffffdff;

	Ingo
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