* Zachary Amsden <[email protected]> wrote:
> gdt = get_cpu_gdt_table(cpu);
> save_desc_40 = gdt[0x40 / 8];
> - gdt[0x40 / 8] = bad_bios_desc;
> + gdt[0x40 / 8] = gdt[GDT_ENTRY_BAD_BIOS_CACHE];
>
i like the cleanup, but wouldnt it be simpler to dedicate GDT entry #8
to the 0x40 descriptor, and hence be compatible with such broken BIOSes
by default? Right now entry #8 is taken up by TLS segment #2, but we
could change GDT_ENTRY_TLS_MIN from 6 to 9 and push the TLS segments to
entries 9,10,11. [ Could there be any buggy SMM code that relies on
having something at 0x40? ]
Ingo
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