dma - when can we use memory-to-memory ?

2016-08-22 Thread Ran Shalit
Hello, I have fpga connected to cpu. In fpga we implement fifo which the cpu need to write into or read from. The fpga is used for mac implementation. So we actually need to copy to/from ip stack buffer to the fifo buffers in fpga. As far as I understand this is memory-to-memory dma. But I am

Re: Minimum build config for boot messages

2016-08-22 Thread Johannes Thoma
Hi, Am 19.08.16 um 16:17 schrieb Andre Schmidt: > Hello, > > what is the minimum config to build a linux kernel that just prints boot messages/errors? > > I was going through my old experiments/notes and found that we used to get kernel boot message with vanilla allnoconfig. > > make

Re: Minimum build config for boot messages

2016-08-22 Thread John de la Garza
On Fri, Aug 19, 2016 at 04:17:22PM +0200, Andre Schmidt wrote: > make ARCH=x86_64 allnoconfig > make all > qemu-system-x86_64 -kernel arch/x86/boot/bzImage > > Those commands above used to be enough, but now the produced kernel doesn't > print any messages on the qemu screen. > > With some

Re: Kernel Panic - not syncing: Attempted to kill init! exitcode=0x0000000b

2016-08-22 Thread Daniel.
The first process that the *nix starts after booting up is init. The init process which has pid 1 live for as long as the host do not reboot. That message means that something has made init exit prematurely. Check your init.d, systemd or whatever init system you're using... Regards, 2016-08-22

Re: Kernel Panic - not syncing: Attempted to kill init! exitcode=0x0000000b

2016-08-22 Thread Ricardo Ribalda Delgado
On Wed, Aug 17, 2016 at 7:05 AM, shobhit bhadani wrote: > >>Which version of kernel are you using? > > I am using kernel 3.8 Are you from the past? 3.8 was released more than 3 years ago!, Around the same day the metor exploted over Russia and the Pope resigned