linux-kernel - [PATCH v1 0/3] Add dependencies of POWER_RESET for MIPS Malta, x86, and PowerMac.

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Message-Id: <20230831201727.3177853-1-tanyuan@tinylab.org>
Date:   Fri,  1 Sep 2023 04:17:27 +0800
From:   Yuan Tan <tanyuan@...ylab.org>
To:     mpe@...erman.id.au, christophe.leroy@...roup.eu,
        tglx@...utronix.de, mingo@...hat.com, tsbogend@...ha.franken.de,
        hdegoede@...hat.com
Cc:     linux@...ssschuh.net, w@....eu, falcon@...ylab.org,
        linux-mips@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Yuan Tan <tanyuan@...ylab.org>
Subject: [PATCH v1 0/3] Add dependencies of POWER_RESET for MIPS Malta, x86, and PowerMac.

These patches is to add dependencies of POWER_RESET for MIPS Malta, x86,
and PowerMac.

To simplify the enablement of the poweroff support, selecting the
required options for CONFIG_POWER_RESET=y may make many people
happyespecially when they are using a customized config (maybe
tinyconfigbased) for a target qemu board. Without normal poweroff
support from the kernel side, qemu will simply hang[1] there after a
'poweroff' command, which is a very bad experience for the automatical
tests.

Currently, based on tinyconfig, it is very hard to find the exact
poweroff options[2]. Some architectures' poweroff works well without
any dependence, the others' poweroff options are hidden deeply, which
make things hard.

After multiple verifications, these options have been identified as the
minimum dependencies required for poweroff to function normally.

Zhangjin and I invested a significant amount of time in searching for
the current options on these devices. We hope that this set of
patcheswill save time for others. If community like it, we will consider
adding dependencies for POWER_RESET on other devices.

---
[1]: https://lore.kernel.org/lkml/511b2f6009fb830b3f32b4be3dca99596c684fa3.1689759351.git.falcon@tinylab.org/
[2]: https://lore.kernel.org/all/983843582e52e83fba79ad45cea6c79e1f62ec6c.1690489039.git.falcon@tinylab.org/

Yuan Tan (3):
  kconfig: add dependencies of POWER_RESET for mips malta
  kconfig: add dependencies of POWER_RESET for x86
  kconfig: add dependencies of POWER_RESET for PowerMac

 arch/mips/Kconfig                       | 3 +++
 arch/powerpc/platforms/powermac/Kconfig | 1 +
 arch/x86/Kconfig                        | 2 ++
 3 files changed, 6 insertions(+)

-- 
2.34.1