On 05/02/2013 12:20 AM, David Henningsson wrote: > On 05/01/2013 09:04 PM, Mike Travis wrote: >> The audio driver mistakenly allows 64 bit addresses to be created for >> the audio driver on Nvidia GPUs. Unfortunately, the hardware normally >> only supports up to 40 bits of DMA. This can cause system panics as >> well as misdirected data when the address is > 40 bits as the upper >> part the address is truncated. > > Thanks for this patch. Stephen Warren, is this something you can > confirm/deny, and do you know what range of hardware this actually > applies to?
It's certainly plausible that the GPU's internal physical addresses are less than a full 64-bits, and this probably affects PCI accesses too. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
