From: Pavel Machek <pavel@ucw.cz>
To: Dexuan Cui <decui@microsoft.com>
Cc: Michael Kelley <mikelley@microsoft.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"lenb@kernel.org" <lenb@kernel.org>,
"robert.moore@intel.com" <robert.moore@intel.com>,
"erik.schmauss@intel.com" <erik.schmauss@intel.com>,
Russell King <rmk+kernel@arm.linux.org.uk>,
Russ Dill <Russ.Dill@ti.com>,
Sebastian Capella <sebastian.capella@linaro.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
KY Srinivasan <kys@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Sasha Levin <Alexander.Levin@microsoft.com>,
"olaf@aepfle.de" <olaf@aepfle.de>,
"apw@canonical.com" <apw@canonical.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
vkuznets <vkuznets@redhat.com>,
"marcelo.cerri@canonical.com" <marcelo.cerri@canonical.com>
Subject: Re: [PATCH] ACPI: PM: Export the function acpi_sleep_state_supported()
Date: Mon, 17 Jun 2019 15:09:21 +0200 [thread overview]
Message-ID: <20190617130921.GC21113@amd> (raw)
In-Reply-To: <PU1P153MB01699020B5BC4287C58F5335BFEE0@PU1P153MB0169.APCP153.PROD.OUTLOOK.COM>
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> > It seems that sleep.c isn't built when on the ARM64 architecture. Using
> > acpi_sleep_state_supported() directly in hv_balloon.c will be problematic
> > since hv_balloon.c needs to be architecture independent when the
> > Hyper-V ARM64 support is added. If that doesn't change, a per-architecture
> > wrapper will be needed to give hv_balloon.c the correct information. This
> > may affect whether acpi_sleep_state_supported() needs to be exported vs.
> > just removing the "static". I'm not sure what the best approach is.
> >
> > Michael
>
> + some ARM experts who worked on arch/arm/kernel/hibernate.c.
>
> drivers/acpi/sleep.c is only built if ACPI_SYSTEM_POWER_STATES_SUPPORT
> is defined, but it looks this option is not defined on ARM.
>
> It looks ARM does not support the ACPI S4 state, then how do we know
> if an ARM host supports hibernation or not?
But actually... I remember ELCE talk about hibernation or ARM32. Not
sure if patches are mainline, but someone was working on that.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2019-06-17 13:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 18:19 [PATCH] ACPI: PM: Export the function acpi_sleep_state_supported() Dexuan Cui
2019-06-14 20:48 ` Michael Kelley
2019-06-14 22:19 ` Dexuan Cui
2019-06-14 22:33 ` Russell King - ARM Linux admin
2019-06-14 23:34 ` Dexuan Cui
2019-06-17 13:08 ` Pavel Machek
2019-06-17 13:09 ` Pavel Machek [this message]
2019-06-17 16:14 ` Lorenzo Pieralisi
2019-06-19 19:54 ` Dexuan Cui
2019-06-20 11:30 ` Pavel Machek
2019-06-21 7:15 ` Dexuan Cui
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