On Tue, 19 Jan 2016 15:56:14 -0500 Neil Horman <nhorman at tuxdriver.com> wrote:
> On Tue, Jan 19, 2016 at 08:10:19AM -0800, Stephen Hemminger wrote: > > On Tue, 19 Jan 2016 09:29:31 -0500 > > Neil Horman <nhorman at redhat.com> wrote: > > > > > On Tue, Jan 19, 2016 at 08:30:40AM +0100, Thomas Monjalon wrote: > > > > 2016-01-18 13:30, David Marchand: > > > > > We could do something ? la modinfo, but let's keep it simple for now. > > > > > > > > > > With this, you can extract the devices that need to be bound to uio / > > > > > vfio > > > > > with tools like objdump : > > > > > > > > > > $ objdump -j rte_pci_id_uio -s build/lib/librte_pmd_fm10k.so > > > > > > > > > > Contents of section rte_pci_id_uio: > > > > > 15760 8680a415 ffffffff 8680d015 ffffffff ................ > > > > > 15770 8680a515 ffffffff 00000000 00000000 ................ > > > > > > > > Yes we need a modinfo-like tool. > > > > Currently, the UIO/VFIO binding can be done after parsing the PCI > > > > device list. > > > > It is better to define the device ids locally to their drivers but it > > > > must > > > > be integrated with an appropriate parsing tool at the same time. > > > > And more importantly than any tool, the format of these ELF data must be > > > > properly defined, documented and extensible. > > > > > > > > Is there someone experimented with such format definition? > > > > Stephen, you were asking for this change, what is your opinion? > > > > I remember that Neil was also interested in this change: > > > > http://dpdk.org/ml/archives/dev/2015-January/012115.html > > > > Panu, Christian, this change could be related to distribution packaging. > > > > Thanks for helping to move this change forward. > > > > > > Yes, I would be interested in seeing this. Is the ask here that someone > > > do it? > > > As I recall from the last thread that you reference, I thought David M was > > > interested in writing it and soliciting for ideas. If thats no longer > > > the case, > > > I can take a stab at writing it. > > > > > > Neil > > > > > > > If these are libraries is there a way to have a real entry point > > to dump PCI id's. > > > Sure, you could write a method that could be dlsym-ed easily enough to fetch > an > array of pci ids, or just print stuff the console. Not sure thats the best > way, > but definately an option > Neil It is just that reading data with objdump is a kludge likely to get broken.
