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Date: Wed, 25 Mar 2015 17:29:10 +0000
From: Catalin Marinas <catalin.marinas@arm.com>
To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Will Deacon <will.deacon@arm.com>,
        Olof Johansson <olof@lixom.net>,
        Grant Likely <grant.likely@linaro.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Ashwin Chaugule <ashwinc@codeaurora.org>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
        Robert Richter <rric@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Graeme Gregory <graeme.gregory@linaro.org>,
        linaro-acpi@lists.linaro.org, Marc Zyngier <marc.zyngier@arm.com>,
        Jon Masters <jcm@redhat.com>, Timur Tabi <timur@codeaurora.org>,
        Mark Salter <msalter@redhat.com>, linux-kernel@vger.kernel.org,
        Al Stone <al.stone@linaro.org>, linux-acpi@vger.kernel.org,
        Mark Brown <broonie@kernel.org>,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
        Sudeep Holla <Sudeep.Holla@arm.com>,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [patch v11 18/23] ARM64 / ACPI: Select
 ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64
Message-ID: <20150325172910.GN14585@localhost>
References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org>
 <1427205776-5060-19-git-send-email-hanjun.guo@linaro.org>
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On Tue, Mar 24, 2015 at 10:02:51PM +0800, Hanjun Guo wrote:
> From: Al Stone <al.stone@linaro.org>
> 
> ACPI reduced hardware mode is disabled by default, but ARM64
> can only run properly in ACPI hardware reduced mode, so select
> ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64.
> 
> If the firmware is not using hardware reduced ACPI mode, we
> will disable ACPI to avoid nightmare such as accessing some
> registers which are not available on ARM64.
> 
> CC: Catalin Marinas <catalin.marinas@arm.com>
> CC: Will Deacon <will.deacon@arm.com>
> Reviewed-by: Grant Likely <grant.likely@linaro.org>
> Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
> Tested-by: Yijing Wang <wangyijing@huawei.com>
> Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
> Tested-by: Jon Masters <jcm@redhat.com>
> Tested-by: Timur Tabi <timur@codeaurora.org>
> Tested-by: Robert Richter <rrichter@cavium.com>
> Acked-by: Robert Richter <rrichter@cavium.com>
> Signed-off-by: Al Stone <al.stone@linaro.org>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>

Acked-by: Catalin Marinas <catalin.marinas@arm.com>