PING: [PATCH v3 0/3] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip

PING: [PATCH v3 0/3] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip

[Pavel Fedin]

PING

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


> -----Original Message-----
> From: kvm-owner@vger.kernel.org [mailto:kvm-owner@vger.kernel.org] On Behalf Of Pavel Fedin
> Sent: Wednesday, August 05, 2015 1:54 PM
> To: kvmarm@lists.cs.columbia.edu; kvm@vger.kernel.org
> Cc: Christoffer Dall; Marc Zyngier
> Subject: [PATCH v3 0/3] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip
> 
> This patch set brings back functionality which was broken in v4.0.
> Unfortunately because of restrictions of such a hardware is is impossible
> to take advantage of virtual architected timer, therefore guest, running
> in such restricted mode, has to use some memory-mapped timer. But it is
> still better than nothing.
> 
> v2 => v3:
> - Improved commit messages, added references to commits where the respective
>   functionality was broken
> - Explicitly specify that the solution currently affects only vGIC and has
>   nothing to do with timer.
> - Fixed code style according to previous notes
> - Removed ARM64 save/restore patch introduced in v2 because it was already
>   obsolete for linux-next
> - Modify KVM_CAP_IRQFD handling in correct place
> 
> v1 => v2:
> - Do not use defensive approach in patch 0001. Use correct conditions in
>   callers instead
> - Added ARM64-specific code, without which attempt to run a VM ends in a
>   HYP crash because of unset vGIC save/restore function pointers
> 
> Pavel Fedin (3):
>   Fix NULL pointer dereference if KVM is used without in-kernel irqchip
>   Detect vGIC presence at runtime
>   Make KVM_CAP_IRQFD dependent on KVM_CAP_IRQCHIP
> 
>  arch/arm/kvm/arm.c  | 19 ++++++++++++++++---
>  virt/kvm/kvm_main.c |  5 +++--
>  2 files changed, 19 insertions(+), 5 deletions(-)
> 
> --
> 2.4.4
> 
> --
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