On Thu, 2007-09-20 at 08:08 -0700, Anil K. Ravindranath wrote: > Hi, > > We have not heard any comments or inputs on this patch. > > With regards, > Anil > > On Sat, 2007-06-30 at 05:45 -0700, Anil K. Ravindranath wrote: > > Subject: [PATCH] aic7xxx driver. Restrict DMA to 32bit for 29320LPE > > Adaptec SCSI controller > > > > Contribution: > > > > Anil Ravindranath <anil_ravindranath@xxxxxxxxxxx> > > > > Issue: > > > > Data Bursts that cross from 32- to 64-Bit address space have incorrect > > address for 29320LPE. This leads to potential data corruption. Where do you think you see this happening? The block layer has a dma_boundary parameter (basically a mask which it refuses to allow dma to cross). By default this is set to 4GB (because a lot of PCI cards have difficulty going from non-DAC to DAC). The aic79xx driver does nothing to alter this, so you shouldn't be seeing any DMA segments crossing the 4GB boundary. James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
