On Wed, 16 Apr 2003, Ralf Baechle wrote: > > 2. i should use vmalloc_prot (size, PAGE_KERNEL_UNCACHED) in umap.c. > > Uncached memory access is rarely necessary and so _extremly_ slow that it > should be avoided at almost any price. Maybe you should describe what > you're trying to achieve, then let's see if there's a better suggestion > we can make. In particular using cached accesses for stores and then doing writebacks (plus invalidates if necessary) is still faster with WB caches. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
