El 16/08/15 a les 11.50, Konstantin Belousov ha escrit: > On Sun, Aug 16, 2015 at 12:03:58PM +0300, Konstantin Belousov wrote: >> On Sun, Aug 16, 2015 at 10:16:53AM +0200, Roger Pau Monn?? wrote: >>> pmap_map_io_transient contains some of this logic, but it uses >>> vmem_alloc (with M_WAITOK) instead of a pcpu pageframe, which defeats >>> part of the purpose of this change and cannot be used as-is. >> >> This logic can be repeated, but it is probably too much for the purpose. >> It would be enough to have single frame (we cannot reuse CMAP1), >> protected by a spin mutex. I do not see much sense in providing >> optimized per-cpu frames for this case. > > Like this. I only compiled the patch.
Thanks, yes, this looks right. Since this is only used for the bounce buffer code I don't think it's necessary to have a per-cpu frame. If the usage of this function is expanded I might look into adding a per-cpu frame. Roger. _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
