Re: [patch] lazy TSS's I/O bitmap copy ...

Arjan van de Ven
2004-08-24T06:51:31Z

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On Mon, 2004-08-23 at 23:23, Davide Libenzi wrote:
> The following patch implements a lazy I/O bitmap copy for the i386
> architecture. With I/O bitmaps now reaching considerable sizes, if the
> switched task does not perform any I/O operation, we can save the copy
> altogether. In my box X is working fine with the following patch, even if
> more test would be required.

the thing is that X will not hit your fault path, since it runs with
iopl() called... your patch is a nice optimisation for X as a result,
however as test, X is almost worthless ;(

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