From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Fedin <p.fedin@samsung.com>
Subject: RE: [PATCH v2 1/3] KVM: arm: Fix NULL pointer dereference if KVM is
 used without in-kernel irqchip
Date: Sun, 19 Jul 2015 17:19:09 +0300
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To: 'Marc Zyngier' <marc.zyngier@arm.com>, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
List-Id: kvmarm@lists.cs.columbia.edu

 Hello!

> I'd appreciate a better commit log. Which patch broke it, why is that
> necessary.

 It was broken by 662d9715840aef44dcb573b0f9fab9e8319c868a.
 Actually, runtime detection was never implemented. The patch message just says that it can be done.
And in order to run KVM on my lame board i had to disable VGIC and VTIMER in kernel .config. The
actual breakage happened because without these definitions kvm_vgic_map_resources() was just a
do-nothing inline.

 vGIC can perfectly be emulated by userspace. And even generic timer can, with some tricks. So i
decided to restore this functionality.

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