On Thu, Jul 17, 2014 at 9:33 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > On Thu, Jul 17, 2014 at 8:08 AM, Chuck Tuffli <ctuffli@xxxxxxxxx> wrote: >> On Wed, Jul 16, 2014 at 7:15 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: >>>> If the BIOS doesn't allocate enough memory mapped IO resources for >>>> devices, it sounds like the kernel can't really fix this problem, >>>> right? >>> >>> Yes. You need to fix BIOS at first. >>> >>> So it will be final products or just development prototype? >> >> This is a prototype development system I'm using to develop software. >> Since a BIOS fix isn't likely to happen, are there existing features I >> can use to work around this problem? > > You need have a scripts with kexec to reload kernel. > 1. make sure that card is the slot 9b:15.0 > 2. boot system with kernel. > 3. unload or unbind the drivers for devices under 80:03.0 > 4. use setpci to clear bridge io, mmio, mmio pref bars with 80:03.0 > 5. kexec load kernel and start kernel again. Perfect. Thanks so much for your explanations and advice! --chuck -- 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
