Please, ignore previous submission with the same subject. Patch file attached was wrong one. Now correct patch attached. Hi, PCI-Express platforms will soon appear on the market. It is worth to support it. Following is patch for 2.4.23 kernel. I tested it on my host, it works properly. I did it for i386 only, I have no other architecture to test. It was patch on the same subject from* Seshadri, Harinarayanan* (/harinarayanan.seshadri@intel.com/ ) http://www.cs.helsinki.fi/linux/linux-kernel/2003-17/0247.html My version differ in several aspects: it is for 2.4 (vs. 2.6); it do not ioremap/unmap page for each transaction. How about inclusion in 2.4.24? I am not subscribed to lkml, thus please CC me (Vladimir Kondratiev ) in replies. Vladimir.