On Fri, 5 Dec 2008 10:08:54 -0800 Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote: > On Thursday, December 4, 2008 12:43 am Yuji Shimada wrote: > > What do you think about supporting both boottime and runtime re-assignment. > > > > I find we can re-assign resources using fakephp driver. What I need to > > do is enhancing my patch to set "pagealignmem" parameter at runtime. > > > > I think it is good to create "/proc/bus/pci/pagealignmem". > > > > Re-assignment can be done as follows. > > > > 1. Sets SSSS:DD:BB.F of the device to "pagealignmem" parameter at runtime. > > 2. Hot-remove the device > > 3. Hot-add it. > > > > > > If you agree with me, I will submit new patch. > > This is a step in the right direction, thanks for pursuing it. Thanks too. > It might be better to put the pagealignmem file (and maybe just call it > "resource_alignment") into the sysfs directory for the device instead though, > then we could write various alignment constraints to it and hot plug as you > suggest. I can't put the "resource_alignment" file into sysfs directory for the device like "/sys/bus/pci/device/SSSS:BB:DD.F", because it disappears when device is hot-removed. How about setting ALIGN@SSSS:BB:DD.F to "/sys/bus/pci/resource_alignment"? ALIGN means alignment for corresponding device. Thanks, -- Yuji Shimada -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
