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From: Pavel Fedin <p.fedin@samsung.com>
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Date: Tue, 26 May 2015 09:39:32 +0300
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Subject: Re: [Qemu-devel] [PATCH v3 4/4] target-arm: Add the GICv2m to the
 virt board
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To: 'Eric Auger' <eric.auger@linaro.org>, 'Peter Maydell' <peter.maydell@linaro.org>
Cc: 'QEMU Developers' <qemu-devel@nongnu.org>, 'Christoffer Dall' <christoffer.dall@linaro.org>, kvmarm@lists.cs.columbia.edu

 Hi!

> > Why? The v2m device isn't really related to the GICv3...
> In the future this handle could point to GICv2m or GICv3 ITS or GICv3
> (if I understand it correctly, when it supports message base =
interrupts
> and no ITS). They all would play the same role of msi-controller.

 Yes, exactly. In my implementation being developed i actually reused =
first patch from this set, and indeed 'v2m_handle' appeared to be useful =
for ITS. My code flow is something like:
 if (gicv3)
  create_its()
else
  create_v2m()

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia