linux-kernel - Re: [PATCH v2 0/6] arm64: Add support of KVM with ACPI

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Message-ID: <20160223023156.GA11645@sha-win-210.asiapac.arm.com>
Date:	Tue, 23 Feb 2016 10:31:57 +0800
From:	Huang Shijie <shijie.huang@....com>
To:	Julien Grall <julien.grall@....com>
CC:	<kvmarm@...ts.cs.columbia.edu>, <christoffer.dall@...aro.org>,
	<marc.zyngier@....com>, <fu.wei@...aro.org>, <kvm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <wei@...hat.com>,
	<al.stone@...aro.org>
Subject: Re: [PATCH v2 0/6] arm64: Add support of KVM with ACPI

On Thu, Feb 11, 2016 at 03:33:18PM +0000, Julien Grall wrote:
> Hello,
>
> This small series allows an ARM64 ACPI based platform to use KVM.
>
> Currently the KVM code has to parse the firmware table to get the necessary
> information to setup the virtual timer and virtual GIC.
>
> However the parsing of those tables are already done in the GIC and arch
> timer drivers.
>
> This patch series introduces different helpers to retrieve the information
> from different drivers avoiding to duplicate the parsing code.
>
> Note there is patch series ([1] and [2]) adding support of KVM on ACPI,
> although the approach chosen is completely different. The code to parse
> the firmware tables are duplicated which I think make more complex to
> support new firmware tables.
>
> See the changes since v1 in the different patches.
>
> Regards,
>
> [1] https://lists.cs.columbia.edu/pipermail/kvmarm/2016-February/018482.html
> [2] https://lists.cs.columbia.edu/pipermail/kvmarm/2016-February/018355.html
>
> Julien Grall (6):
>   KVM: arm/arm64: arch_timer: Gather KVM specific information in a
>     structure
>   KVM: arm/arm64: arch_timer: Rely on the arch timer to parse the
>     firmware tables
>   irqchip/gic-v2: Gather ACPI specific data in a single structure
>   irqchip/gic-v2: Parse and export virtual GIC information
>   irqchip/gic-v3: Parse and export virtual GIC information
Beside this patch (I do not have the gic-v3 hardware now), I tested this patch set with my JUNo-r1 board
with kvmtool. It works fine.

Tested-by: Huang Shijie <shijie.huang@....com>



>   KVM: arm/arm64: vgic: Rely on the GIC driver to parse the firmware
>     tables
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