In place kexec

David Woodhouse dwmw2 at
Fri Jul 30 15:17:42 EDT 2010

On Fri, 30 Jul 2010, Vivek Goyal wrote:

> So what happens if we tear down the mapping while DMA is on.

The DMA gets blocked, and you don't have to worry about whether the device 
was shut down cleanly or not. The device may be unhappy, but when the new 
kernel's driver loads and reinitialises it, all should be forgiven.


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