Re: [PATCH 0/7] arm64: hibernate: dust off the suspend/cleanup rework

[Bradley Morgan <brads@mainlining.org>]

On 28 August 2026 11:32:27 BST, Ard Biesheuvel <ardb@kernel.org> wrote:
>Hi Bradley,
>

Ard!

>On Tue, 25 Aug 2026, at 22:58, Bradley Morgan wrote:
>> Everything object compiles and passes checkpatch and sparse. I could not
>> boot or run a hibernate cycle on real hardware here, so that still wants
>> doing before anyone gets excited.
>>
>
>You can easily test hibernate under QEMU/mach-virt: just create a file on
>the host, mkswap it and pass it to the VM as a virtio drive (e.g.,
>/dev/vda)
>You can then swapon it in the VM and do 'echo disk >/sys/power/state',
>which
>will perform the hibernate and exit QEMU. If you then restart it with
>'resume=/dev/vda' on the command line, it will perform the resume from
>hibernate at boot.
>

Ack. Tried on PKVM last night.

>I've had a go with your series on a NV capable system (Mac Mini M2).
>Without
>the series applied, I can hibernate and resume 4 vCPUs without issue, so
>it
>is not entirely clear to me what your series intends to fix.
>
>With the series applied resume from hibernate still works - I did see one
>intermittent failure where the secondaries failed to come up, but I only
>saw it once and so I cannot say for certain whether your series triggered
>it or not.
>
>Tested-by: Ard Biesheuvel <ardb@kernel.org>
>

For the whole series?

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--- Thanks!
https://lore.kernel.org/all/EE579805-42F2-4C58-B752-F28779EEB717@grrlz.net/