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.

  Add it to your Download Basket!

 Add it to your Watch List!

0/5

Rate it!
send us
an update
LICENSE TYPE:
GPL (GNU General Public License) 
USER RATING:
2.6/5 15
DEVELOPED BY:
Davide Libenzi
HOMEPAGE:
www.xmailserver.org
CATEGORY:
ROOT \ Utilities
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

#bitmap update #kernel patch #I/O patch #TSS #I/O #bitmap #kernel

Add your review!

SUBMIT