Eric, I verified the exchange the cpufixup after the cache_on...mtrr_check in cpu. c for S2882.
Found one interesting thing 1. In fallback mode, it does not pause after "Clearing LinuxBIOS memory " and "Copying LinuxBIOS to ram". 2. In normal node, it does pause after the "Clearing" and "Copying" ( 5s and 4s). What could cause that? Regards YH -----邮件原件----- 发件人: ron minnich [mailto:[EMAIL PROTECTED] 发送时间: 2004年3月28日 21:03 收件人: Eric W. Biederman 抄送: Li-Ta Lo; LinuxBIOS 主题: Re: Cache On and ECC clear On 28 Mar 2004, Eric W. Biederman wrote: > But please break it out into it's own separate inline function. > > It has two very strong requirements. > 1) That we never trigger a hardware read on the addresses were are clearing > before we have triggered a hardware write. The fact I setup the area > as uncached but write-combining ensures this. > 2) That this code runs very fast. It needs to be able to run at 6.4GB/s > when you have dual channel PC3200 DDR installed. This is one of the > reasons we run it on a per cpu basis. The loop can only run at 4.0GB/s > from the other cpu. > ok, if it stays assembly this explanation will be put in with it. ron _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
