On Sat, 17 Aug 2002, Gabriel Paubert wrote:
> Hey no, it's cpu_gdt_table that must be aligned. That one does not
> matter, it's only used once for the lgdt instruction...
you are right, i misread the System.map - cpu_gdt_table is aligned
properly:
c02a39e0 D cpu_gdt_table
so it must be something else that prevents booting on those boxes. Does
the boot BIOS code perhaps assume a certain GDT layout? A certain size?
Does it overwrite certain GDT entries perhaps?
> Ingo, for the layout of the gdt also, the location of the TSS descriptor
> is irrelevant AFAICT. It's only used when doing the initial LTR, after
> that it's never referenced by the CPU.
yes. Fortunately this makes no difference, the LDT and the default DS/CS
are in a single cacheline still.
Ingo
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This archive was generated by hypermail 2b29 : Fri Aug 23 2002 - 22:00:13 EST