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Re: [RFC v2 00/14] Add SDEI support for arm64

From: Peter Maydell
Subject: Re: [RFC v2 00/14] Add SDEI support for arm64
Date: Fri, 7 Feb 2020 11:08:45 +0000

On Fri, 7 Feb 2020 at 10:52, James Morse <address@hidden> wrote:
> Is there an established pattern for how Qemu 'gets' things that are done in 
> secure-world?
> For PSCI the kernel does it, but this obviously doesn't scale to something 
> like OP-TEE.

The answer broadly is "it doesn't get them", the same way
that a real hardware implementation that provides only EL1
and EL0 has no way to get them. Ideally there would be an
architecturally provided way to run a virtualized EL3 in the
guest so it could run (a QEMU-aware flavour of) firmware...

-- PMM

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