On Thu, 3 Jan 2002, Alan Cox wrote: > > This tells the aic7xxx to use DMA safe memory for I/O. > > That seems totally inappropriate. The unchecked dma option is for > ancient ISA DMA controllers that didnt do the 16Mb check. If you > find you need it debug your pci remapper This is used when scaning for devices (drivers/scsi/scsi_scan.c) . When this flag is not set, the code uses memory from the stack (unsigned char scsi_result0[256]; in scan_scsis) instead of kmallocating it DMA safe as it should on non-coherent systems. Maybe this is the thing to change? regards, Vivien Chappelier.
