From: Sudeep Holla <sudeep.holla@kernel.org>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, maz@kernel.org,
Sudeep Holla <sudeep.holla@kernel.org>,
will@kernel.org, catalin.marinas@arm.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, steven.price@arm.com,
aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com,
joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com,
linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com,
sdonthineni@nvidia.com, alpergun@google.com,
fj0570is@fujitsu.com, WeiLin.Chang@arm.com,
lpieralisi@kernel.org, enju.kohei@fujitsu.com,
jonathan.cameron@oss.qualcomm.com,
"Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>, Pavel Machek <pavel@kernel.org>,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v22 07/10] kernel: hibernate: Add an arch hook for preventing hiberation
Date: Fri, 2 Oct 2026 14:32:25 +0100 [thread overview]
Message-ID: <20261002-sloppy-tremendous-guan-30cbe5@sudeepholla> (raw)
In-Reply-To: <20261002061507.1600269-8-suzuki.poulose@arm.com>
On Fri, Oct 02, 2026 at 07:15:03AM +0100, Suzuki K Poulose wrote:
> Add a hook to allow arch code disable hibernation. On arm64, with an RMM active,
> there could be pages that are delegated to the "Realm" security state. Any
> access to them are fatal (e.g., hibernate save image or restoring an image to
> a delegated page). pKVM host also has its restrictions on enabling hibernation.
>
> Add a weak arch hook to let the architectures have a say.
>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Pavel Machek <pavel@kernel.org>
> Cc: linux-pm@vger.kernel.org
> Cc: Sudeep Holla <sudeep.holla@kernel.org>
FWIW, it makes sense for this RMM use case:
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
--
Regards,
Sudeep
next prev parent reply other threads:[~2026-10-02 13:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-02 6:14 [PATCH v22 00/10] firmware: arm_rmm: Add RMM v2.0 base RMI support Suzuki K Poulose
2026-10-02 6:14 ` [PATCH v22 01/10] firmware: arm_rmm: Add SMC definitions for calling the RMM Suzuki K Poulose
2026-10-02 6:14 ` [PATCH v22 02/10] firmware: arm_rmm: Check for RMI support at init Suzuki K Poulose
2026-10-02 6:14 ` [PATCH v22 03/10] firmware: arm_rmm: Configure the RMM with the host's page size Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 04/10] firmware: arm_rmm: Add support for SRO Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 05/10] firmware: arm_rmm: Activate the RMM Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 06/10] firmware: arm_rmm: Ensure the RMM has GPT entries for memory Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 07/10] kernel: hibernate: Add an arch hook for preventing hiberation Suzuki K Poulose
2026-10-02 11:03 ` Catalin Marinas
2026-10-02 15:29 ` Suzuki K Poulose
2026-10-02 13:32 ` Sudeep Holla [this message]
2026-10-02 6:15 ` [PATCH v22 08/10] arm64: Block hibernate and kexec while RMM is active Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 09/10] firmware: arm_rmm: Add wrappers for Realm related RMI commands Suzuki K Poulose
2026-10-02 11:05 ` Catalin Marinas
2026-10-02 15:28 ` Suzuki K Poulose
2026-10-02 6:15 ` [PATCH v22 10/10] firmware: arm_rmm: hotplug: Skip memory added to ZONE_MOVABLE Suzuki K Poulose
2026-10-02 7:57 ` David Hildenbrand (Arm)
2026-10-02 18:49 ` [PATCH v22 00/10] firmware: arm_rmm: Add RMM v2.0 base RMI support Catalin Marinas
2026-10-03 5:57 ` Suzuki K Poulose
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