Just curious whether Xen supports legacy ISA DMA for now which has requirement on lower 16M memory. If can, how is it supported since 1M-16M are occupied by Xen? Dom0 seems only setup fixmap for 0-1M physical memory... Thanks, Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> Just curious whether Xen supports legacy ISA DMA for now which > has requirement on lower 16M memory. If can, how is it supported > since 1M-16M are occupied by Xen? Dom0 seems only setup > fixmap for 0-1M physical memory...Xen doesn''t support ISA DMA. This hasn''t turned out to be a significant problem as hardware with the ISA limitation has been obsolete for a very long time. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
>From: Keir Fraser [mailto:Keir.Fraser@cl.cam.ac.uk] >Sent: 2007年3月21日 18:08 > >> Just curious whether Xen supports legacy ISA DMA for now which >> has requirement on lower 16M memory. If can, how is it supported >> since 1M-16M are occupied by Xen? Dom0 seems only setup >> fixmap for 0-1M physical memory... > >Xen doesn''t support ISA DMA. This hasn''t turned out to be a >significant problem as hardware with the ISA limitation has been >obsolete for a very long time. > > -- KeirUnderstand. Just a curious question when realizing it. :-) Thanks, Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel