From: Sonic Zhang <sonic....@gmail.com> Date: Wed, 6 May 2015 11:53:53 +0800
> When I debug Linux kernel via KGDB over Ethernet, KGDB calls netpoll > API and stmmac_poll_controller to send UDP packets with all interrupts > disabled. KGDB assumes all interrupts keeps disabled when it is active > and doing UDP data transmission. Enabling interrupts in > stmmac_poll_controller causes KGDB re-enter exception and system halt. If KGDB has disabled local cpu interrupts, that cannot happen. What stmmac_poll_controller() is doing is enabling a specific interupt source, not "interrupts" generally. The latter is what KGDB can specifically control and should care about. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
