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From: Pavel Fedin <p.fedin@samsung.com>
To: 'Marc Zyngier' <marc.zyngier@arm.com>,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
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	[thread overview]
Message-ID: <00e901d0c22d$e1b0c680$a5125380$@samsung.com> (raw)
In-Reply-To: <55A931B7.4000905@arm.com>

 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

  reply	other threads:[~2015-07-19 14:19 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-14 12:06 [PATCH v2 0/3] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip Pavel Fedin
2015-07-14 12:06 ` [PATCH v2 1/3] KVM: arm: Fix NULL pointer dereference if KVM is used " Pavel Fedin
2015-07-17 16:47   ` Marc Zyngier
2015-07-19 14:19     ` Pavel Fedin [this message]
2015-07-14 12:06 ` [PATCH v2 2/3] KVM: arm: Detect vGIC presence at runtime Pavel Fedin
2015-07-17 17:14   ` Marc Zyngier
2015-07-14 12:06 ` [PATCH v2 3/3] KVM: arm64: Introduce default dummy save/restore functions Pavel Fedin
2015-07-14 12:28   ` Marc Zyngier
2015-07-14 13:02     ` Pavel Fedin
2015-07-16 13:30       ` Christoffer Dall
2015-07-14 14:15     ` Pavel Fedin
2015-07-17 16:59 ` [PATCH v2 0/3] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip Marc Zyngier
2015-07-19 14:05   ` Pavel Fedin
2015-07-20  8:08     ` Marc Zyngier
2015-07-22  7:19       ` Pavel Fedin
2015-07-23 16:48         ` Marc Zyngier
2015-07-24 15:27           ` Pavel Fedin
2015-07-24 16:06             ` Marc Zyngier
2015-07-26 12:50               ` Pavel Fedin
2015-07-27  7:28                 ` Marc Zyngier
2015-07-27  8:36                   ` Pavel Fedin
2015-07-27  9:02                     ` Marc Zyngier

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