Hi, Friday, May 12, 2006 12:19 AM, Vasily Averin wrote: > Could you please tell me any updates? Could you confirm that > this issue was > reproduced on your nodes? Yes, it has confirmed by F/W team that the controller doesn't support 64-bit DMA. A patch addresses the issue will followed by soon. Thank you, > -----Original Message----- > From: Vasily Averin [mailto:vvs@xxxxx] > Sent: Friday, May 12, 2006 12:19 AM > To: Vasily Averin > Cc: Ju, Seokmann; James Bottomley; > linux-scsi@xxxxxxxxxxxxxxx; Kolli, Neela; Mukker, Atul; > Bagalkote, Sreenivas; devel@xxxxxxxxxx; Linux Kernel Mailing List > Subject: Re: megaraid_mbox: garbage in file > > Vasily Averin wrote: > > Ju, Seokmann wrote: > >>I'm waiting for feedback from F/W team for MegaRAID 150-4 > controller if it supports 64-bit DMA. > >> > >>I'll update here as I get. > > Could you please tell me any updates? Could you confirm that > this issue was > reproduced on your nodes? > > >>Can you do one quick change in the driver? > >>Search for 'pci_set_dma_mask()' API calls in the driver and > mask out one of them with DMA_64BIT_MASK as follow. > >>--- > >> // if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK) != 0) { > >> > >> // conlog(CL_ANN, (KERN_WARNING > >> // "megaraid: could not set DMA mask for > 64-bit.\n")); > >> > >> // goto out_free_sysfs_res; > >> // } > >>--- > >> > >>I found that the driver is NOT checking 64-bit DMA > capability of the controllers accordingly and this could be a reason. > > > > This change help me: > > Errors go away, file content is correct. > > I'm going to use this change in production, at least as > temporal workaround. > Could you please confirm that it is safe for all controllers > supported by this > driver? > > Thank you, > Vasily Averin > > SWsoft Virtuozzo/OpenVZ Linux kernel team > - : 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
