On Wed, 2014-01-08 at 00:24 -0800, ravich wrote: > Finally I found the problem causing the sudden system reset : > > our setup : > > P2020<====>PCI Bridge <=====> FPGA > > The reset occurs when we allocating skb and giving the Fpga dma addr of > skb->data of this skb and when the FPGA tries to reach this address we are > having a hardware reset. > > To fixed it we used GFP_DMA flag on skb allocations. > > If you can explain me few thinks I will be more then happy : > 1) how come we managed to work in 2.6.32 kernel without this flag.
Maybe you got lucky, allocation patterns changed, etc? > 2) Ok gave you a bad dma address why reset the system without any warning. If you write to random addresses arbitrary things can happen. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev