Running kexec on mx6

[linux@arm.linux.org.uk (Russell King - ARM Linux)]

On Tue, Jun 16, 2015 at 03:01:49PM -0300, Fabio Estevam wrote:
> On Tue, Jun 16, 2015 at 1:13 PM, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> 
> > Well, the good news is I can reproduce it here... the bad news is that
> > my attempt to debug it so far is causing extra problems - because the
> > imx6 uart is having its clocks disabled, which kind'a makes it hard to
> > get debug out... that's wasted half an hour working that out, and
> > further debug is now going to have to wait until later this evening
> > or tomorrow.
> 
> Thanks, Russell.
> 
> I am having different results from the initial post now.
> 
> I noticed that 4.1-rc works fine, but 4.0 does not.
> 
> If I apply commit fee3fd4fd2ad136b ("ARM: 8338/1: kexec: Relax SMP
> validation to improve DT compatibility") against 4.0 then kexec works
> fine here.

If you don't have that commit, kexec should fail gracefully if it thinks
it can't cope with the existing system config - it shouldn't get to the
point where it takes the existing kernel down.

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