Lazy TSS's I/O bitmap updateLazy TSS's I/O bitmap update patch implements a lazy TSS's I/O bitmap copy for the i386 and x86-64 architecture. | |
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Lazy TSS's I/O bitmap update Ranking & Summary
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- License:
- GPL
- Price:
- FREE
- Publisher Name:
- Davide Libenzi
- Publisher web site:
- http://www.xmailserver.org/davide.html
Lazy TSS's I/O bitmap update Tags
Lazy TSS's I/O bitmap update Description
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.
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