Lazy TSS's I/O bitmap update 0.2

Lazy TSS's I/O bitmap update patch implements a lazy TSS's I/O bitmap copy for the i386 and x86-64 architecture.
Lazy TSS's I/O bitmap update patch implements a lazy TSS's I/O bitmap copy for the i386 and x86-64 architecture. Instead of copying the bitmap at every context switch, the TSS's I/O bitmap offset is set to an invalid offset, so that an attempt to access the bitmap from the CPU will trigger a GP fault.

It is lazily at that stage that the bitmap is updated, by hence avoiding bitmap copies in cases where the switched task do not perfom any I/O operation.

last updated on:
April 9th, 2008, 3:03 GMT
price:
FREE!
homepage:
www.xmailserver.org
license type:
GPL (GNU General Public License) 
developed by:
Davide Libenzi
category:
ROOT \ Utilities
Lazy TSS's I/O bitmap update
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