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SubjectRe: [PATCH] task_struct colouring ...
On Sat, 1 Dec 2001, Alan Cox wrote:

> > The point is why store kernel pointers in global registers when You can
> > achieve the same functionality, with a smaller patch, that does not need
> > to be recoded for each CPU, without using global registers.
>
> Because it is much much much faster

We'll see how much faster is the global register allocation against code
like :

movl %esp, %eax
andl $-8192, %eax
movl (%eax), %eax

Because you can justify a global register allocation only if this "much
much faster" translates to a number that has sense.




- Davide




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