You'd better commit the additional commet made by Eirc. > /* For a non bridge resource granularity and alignment are the same. > * For a bridge resource align is the largest needed alignment below > * the bridge. While the granularity is simply how many low bits of the > * address cannot be set. > */
YH. -----邮件原件----- 发件人: ron minnich [mailto:[EMAIL PROTECTED] 发送时间: 2004年3月10日 20:24 收件人: Eric W. Biederman 抄送: YhLu; 'LinuxBIOS' 主题: Re: 答复: Prefmem of bus 3 On 10 Mar 2004, Eric W. Biederman wrote: > > It has the additional comment: > > /* Get the resource granularity */ > gran = 1UL << resource->gran; > > /* For a non bridge resource granularity and alignment are the same. > * For a bridge resource align is the largest needed alignment below > * the bridge. While the granularity is simply how many low bits of the > * address cannot be set. > */ > > /* Get the limit (rounded up) */ > limit = base + ((resource->size + gran - 1UL) & ~(gran - 1UL)) -1UL; not to worry, Ollie and I fixed it too. We're going to have some real collisions when you commit. We are using the round() function for clarity, e.g. limit = base + round(resource->size, gran) - 1UL; ron _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
