Re: [Xen-devel] [Very RFC PATCH] Livepatch - initial ARM64/32 support.

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Thu, 11 Aug 2016, Julien Grall wrote:
> On 09/08/2016 06:18, Konrad Rzeszutek Wilk wrote:
> > Hey!
> 
> Hi Konrad,
> 
> > Over the last couple of months in my spare time I was playing
> > with making livepatch work with ARM64 (using the FoundationModel
> > simulator) and I finally got it working tonight.
> 
> Congrats!

Indeed, congratulations! I hope it was fun :-)


> > Sending out the patches just in case they don't work tomorrow :-)
> > 
> > The ARM32 part is going slowly - as I don't have a simulator
> > and using a real board takes time.
> 
> Whilst I can see usage of livepatch for Xen ARM64 (e.g server), I am less
> convinced for ARM32. I am bit worry to check-in code that will get rotten in
> the long term. So do you see any usage on ARM32?

Actually I think it is useful for embedded use cases too: think about
security updates for any embedded devices which cannot easily be
rebooted. Or even if they can be rebooted, it might create a
competitive advantage to build a car that can be updated for critical
security fixes without requesting the driver to stop.

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