Hi, you've sent shortly in debian-user the followin tip. i'd like to include it in LTT, the Linux Tips and Tricks page at http://www.patoche.org/LTT
so i'm asking your permission to do so. thanks in advance. Le 03-Dec-98, Manoj Srivastava a pris ses électrons pour écrire: > Hi, > > Tecras and other notebooks > -------------------------- > (Many thanks to Philip Hands <[EMAIL PROTECTED]> and > Avery Pennarun <[EMAIL PROTECTED]> for this explanation) > > Tecras and other notebooks, and some PCs have a problem where they > fail to flush the cache when switching on the a20 gate (IIRC), which > is provoked by bzImage kernels, but not by zimage kernels. > > bzImage files are actually "big zImage" not "bzipped Image". bzImage > kernels can be as large as you like, but because they need to decompress > into extended memory, they aggravate this problem. zImage kernels just > compress into conventional memory, so they never need to touch the a20 gate, > but they hit the 640k limit. > > This problem is *not* present in late 2.1.* and later (2.2 when > available) kernels, bzImage kernel work just fine (the necessary code > has been added, see the .S files in the kernel sources). > > > For older kernels there are two solutions that I know of: > > 1) apply a patch, which flushes the cache. Unfortunately this > causes other machines to crash so is not universally applicable > (hence the tecra disks being segragated from the mainstream) > > 2) build a zimage, rather than bzimage kernel. This seems to get > round the problem. use the --zimage option to make-kpkg, or even > set this as the default in /etc/kernel-pkg.conf. > > > manoj > -- > Manoj Srivastava <[EMAIL PROTECTED]> <http://www.datasync.com/%7Esrivasta/> > Key C7261095 fingerprint = CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E > > -- > Theory is gray, but the golden tree of life is green. Goethe > Manoj Srivastava <[EMAIL PROTECTED]> <http://www.datasync.com/%7Esrivasta/> > Key C7261095 fingerprint = CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E /\//\/\/\\/\/\//\/\\/\/\\/\\/\//\/\\/\//\/\\/\//\/\\/\//\/\\ Patrick M. [EMAIL PROTECTED] http://www.patoche.org/ Sysadmin of patoche.org, globenet.org, bde.espci.fr
