linux-kernel - Re: [PATCH v3 13/17] ARM64 / ACPI: Add GICv2 specific ACPI boot support

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Message-ID: <20140902163414.GJ27056@arm.com>
Date:	Tue, 2 Sep 2014 17:34:14 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Tomasz Nowicki <tomasz.nowicki@...aro.org>
Cc:	Marc Zyngier <Marc.Zyngier@....com>,
	"hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Mark Rutland <Mark.Rutland@....com>,
	Olof Johansson <olof@...om.net>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"graeme.gregory@...aro.org" <graeme.gregory@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Sudeep Holla <Sudeep.Holla@....com>,
	Will Deacon <Will.Deacon@....com>,
	Jason Cooper <jason@...edaemon.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>,
	Robert Richter <rric@...nel.org>,
	Lv Zheng <lv.zheng@...el.com>,
	Robert Moore <robert.moore@...el.com>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Charles Garcia-Tobin <Charles.Garcia-Tobin@....com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>
Subject: Re: [PATCH v3 13/17] ARM64 / ACPI: Add GICv2 specific ACPI boot
 support

On Tue, Sep 02, 2014 at 12:48:37PM +0100, Tomasz Nowicki wrote:
> On 01.09.2014 19:35, Marc Zyngier wrote:
> > On 01/09/14 15:57, Hanjun Guo wrote:
> >> From: Tomasz Nowicki <tomasz.nowicki@...aro.org>
> >>
> >> ACPI kernel uses MADT table for proper GIC initialization. It needs to
> >> parse GIC related subtables, collect CPU interface and distributor
> >> addresses and call driver initialization function (which is hardware
> >> abstraction agnostic). In a similar way, FDT initialize GICv1/2.
> >>
> >> NOTE: This commit allow to initialize GICv1/2 only.
> >
> > I cannot help but notice that there is no support for KVM here. It'd be
> > good to add a note to that effect, so that people do not expect
> > virtualization support to be working when booting with ACPI.
> 
> yes, it is worth mentioning!

It's also worth mentioning if there are any plans to fix this ;).

-- 
Catalin
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