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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: "Mario Limonciello (AMD)" <superm1@kernel.org>
Cc: "Rafael J . Wysocki" <rafael@kernel.org>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Pavel Machek" <pavel@kernel.org>, "Len Brown" <lenb@kernel.org>,
	"Christian König" <christian.koenig@amd.com>,
	"James E . J . Bottomley" <James.Bottomley@hansenpartnership.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"open list:HIBERNATION (aka Software Suspend,
	aka swsusp)" <linux-pm@vger.kernel.org>,
	"open list:RADEON and AMDGPU DRM DRIVERS"
	<amd-gfx@lists.freedesktop.org>,
	"open list:DRM DRIVERS" <dri-devel@lists.freedesktop.org>,
	"open list:PCI SUBSYSTEM" <linux-pci@vger.kernel.org>,
	"open list:SCSI SUBSYSTEM" <linux-scsi@vger.kernel.org>,
	"open list:USB SUBSYSTEM" <linux-usb@vger.kernel.org>,
	"open list:TRACING" <linux-trace-kernel@vger.kernel.org>,
	"AceLan Kao" <acelan.kao@canonical.com>,
	"Kai-Heng Feng" <kaihengf@nvidia.com>,
	"Mark Pearson" <mpearson-lenovo@squebb.ca>,
	"Merthan Karakaş" <m3rthn.k@gmail.com>,
	"Eric Naim" <dnaim@cachyos.org>
Subject: Re: [PATCH v6 RESEND 00/11] Improvements to S5 power consumption
Date: Mon, 8 Sep 2025 11:19:31 +0200	[thread overview]
Message-ID: <2025090852-coma-tycoon-9f37@gregkh> (raw)
In-Reply-To: <20250906143642.2590808-1-superm1@kernel.org>

On Sat, Sep 06, 2025 at 09:36:31AM -0500, Mario Limonciello (AMD) wrote:
> A variety of issues both in function and in power consumption have been
> raised as a result of devices not being put into a low power state when
> the system is powered off.
> 
> There have been some localized changes[1] to PCI core to help these issues,
> but they have had various downsides.
> 
> This series instead tries to use the S4 flow when the system is being
> powered off.  This lines up the behavior with what other operating systems
> do as well.  If for some reason that fails or is not supported, run their
> shutdown() callbacks.
> 
> Cc: AceLan Kao <acelan.kao@canonical.com>
> Cc: Kai-Heng Feng <kaihengf@nvidia.com>
> Cc: Mark Pearson <mpearson-lenovo@squebb.ca>
> Cc: Merthan Karakaş <m3rthn.k@gmail.com>
> Cc: Eric Naim <dnaim@cachyos.org>
> ---
> v6 RESEND:
>  * Resent because Greg said he was ignoring it and would like the whole
>    series to be able to review.

Messy, but wow, I'll trust you all that this actually works properly.
No objections from me, but I don't want my ack on this as I don't know
how to maintain it :)

thanks,

greg k-h

  parent reply	other threads:[~2025-09-08 12:44 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-06 14:36 [PATCH v6 RESEND 00/11] Improvements to S5 power consumption Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 01/11] PM: Introduce new PMSG_POWEROFF event Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 02/11] scsi: Add PM_EVENT_POWEROFF into suspend callbacks Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 03/11] usb: sl811-hcd: " Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 04/11] USB: Pass PMSG_POWEROFF event to suspend_common() for poweroff with S4 flow Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 05/11] PCI: PM: Disable device wakeups when halting system through " Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 06/11] PCI: PM: Split out code from pci_pm_suspend_noirq() into helper Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 07/11] PCI: PM: Run bridge power up actions as part of restore phase Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 08/11] PCI: PM: Use pci_power_manageable() in pci_pm_poweroff_noirq() Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 09/11] PCI: Put PCIe bridges with downstream devices into D3 at hibernate Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 10/11] drm/amd: Avoid evicting resources at S5 Mario Limonciello (AMD)
2025-09-06 14:36 ` [PATCH v6 RESEND 11/11] PM: Use hibernate flows for system power off Mario Limonciello (AMD)
2025-09-08  9:19 ` Greg Kroah-Hartman [this message]
2025-09-08 12:39   ` [PATCH v6 RESEND 00/11] Improvements to S5 power consumption Mario Limonciello
2025-09-08 14:41     ` Greg Kroah-Hartman

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