Eric and Randy: Can you answer a question regarding kexec? How does it handle shared IRQs when shutting down the old kernel?
The problem arises when the new kernel initializes a driver for the first device sharing an IRQ line. The driver will enable the IRQ. If the second device is actively generating an interrupt request the driver will ignore it, leading to "irq x - nobody cared" errors. What does kexec do about this? Normally the BIOS will disable all devices from generating interrupts when it boots a kernel (all except for Legacy USB and a few others, that is!). Somehow kexec must duplicate that functionality. Alan Stern ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
