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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Anchal Agarwal <anchalag@amazon.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	hpa@zytor.com, x86@kernel.org, jgross@suse.com,
	linux-pm@vger.kernel.org, linux-mm@kvack.org, kamatam@amazon.com,
	konrad.wilk@oracle.com, roger.pau@citrix.com, axboe@kernel.dk,
	davem@davemloft.net, rjw@rjwysocki.net, len.brown@intel.com,
	pavel@ucw.cz, peterz@infradead.org, eduval@amazon.com,
	sblbir@amazon.com, xen-devel@lists.xenproject.org,
	vkuznets@redhat.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, dwmw@amazon.co.uk,
	benh@kernel.crashing.org
Subject: Re: [PATCH v2 01/11] xen/manage: keep track of the on-going suspend mode
Date: Wed, 5 Aug 2020 09:31:13 -0400	[thread overview]
Message-ID: <50d0dbe1-533e-792a-6916-8c72d623064a@oracle.com> (raw)
In-Reply-To: <20200804234201.GA23820@dev-dsk-anchalag-2a-9c2d1d96.us-west-2.amazon.com>

On 8/4/20 7:42 PM, Anchal Agarwal wrote:
>
> I think this could be done. PM_HIBERNATION_PREPARE could return -ENOTSUPP
> for arm and pvh dom0 when the notifier call chain is invoked for this case
> in hibernate(). This will then be an empty notifier just for checking two
> usecases.
> Also, for pvh dom0, the earlier code didn't register any notifier,
> with this approach you are suggesting setup the notifier for hvm/pvh dom0 and
> arm but fail during notifier call chain during PM_HIBERNATION_PREPARE ?


Right.


(Although the earlier code did register the notifier:
xen_setup_pm_notifier() would return an error for !xen_hvm_domain() and
PVH *is* an HVM domain, so registration would actually happen)


>
> I think still getting rid of suspend mode that was earlier a part of this
> notifier is a good idea as it seems redundant as you pointed out earlier. 


Yes.


-boris



  reply	other threads:[~2020-08-05 19:14 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-02 18:21 [PATCH v2 00/11] Fix PM hibernation in Xen guests Anchal Agarwal
2020-07-02 18:21 ` [PATCH v2 01/11] xen/manage: keep track of the on-going suspend mode Anchal Agarwal
2020-07-13 15:52   ` Boris Ostrovsky
2020-07-15 20:49     ` Anchal Agarwal
2020-07-15 21:18       ` Boris Ostrovsky
2020-07-17 19:10         ` Anchal Agarwal
2020-07-19  1:47           ` Boris Ostrovsky
2020-07-20  9:37             ` Roger Pau Monné
2020-07-21  0:17               ` Anchal Agarwal
2020-07-21  8:30                 ` Roger Pau Monné
2020-07-21 19:55                   ` Anchal Agarwal
2020-07-22  8:27                     ` Roger Pau Monné
2020-07-21  0:03             ` Anchal Agarwal
2020-07-21 21:48               ` Boris Ostrovsky
2020-07-22  0:18                 ` Stefano Stabellini
2020-07-22 18:02                   ` Anchal Agarwal
2020-07-22 22:45                     ` Boris Ostrovsky
2020-07-22 23:49                     ` Stefano Stabellini
2020-07-23 22:57                       ` Anchal Agarwal
2020-07-24 23:01                         ` Stefano Stabellini
2020-07-27 22:08                           ` Boris Ostrovsky
2020-07-30 23:06                             ` Anchal Agarwal
2020-07-31 14:13                               ` Boris Ostrovsky
2020-07-31 14:25                                 ` Rafael J. Wysocki
2020-08-04 23:42                                 ` Anchal Agarwal
2020-08-05 13:31                                   ` Boris Ostrovsky [this message]
2020-08-05 17:42                                     ` Anchal Agarwal
2020-07-02 18:21 ` [PATCH v2 03/11] x86/xen: Introduce new function to map HYPERVISOR_shared_info on Resume Anchal Agarwal
2020-07-02 18:22 ` [PATCH v2 04/11] x86/xen: add system core suspend and resume callbacks Anchal Agarwal
2020-07-05 17:22   ` kernel test robot
2020-07-22  9:08   ` Julien Grall
2020-07-02 18:22 ` [PATCH v2 05/11] genirq: Shutdown irq chips in suspend/resume during hibernation Anchal Agarwal
2020-07-02 18:22 ` [PATCH v2 06/11] xen-blkfront: add callbacks for PM suspend and hibernation Anchal Agarwal
2020-07-02 18:22 ` [PATCH v2 07/11] xen-netfront: " Anchal Agarwal
2020-07-02 18:22 ` [PATCH v2 08/11] x86/xen: save and restore steal clock during PM hibernation Anchal Agarwal
2020-07-02 18:23 ` [PATCH v2 09/11] xen: Introduce wrapper for save/restore sched clock offset Anchal Agarwal
2020-07-02 18:23 ` [PATCH v2 10/11] xen: Update sched clock offset to avoid system instability in hibernation Anchal Agarwal
2020-07-02 18:23 ` [PATCH v2 11/11] PM / hibernate: update the resume offset on SNAPSHOT_SET_SWAP_AREA Anchal Agarwal
2020-07-02 18:25 ` [PATCH v2 02/11] xenbus: add freeze/thaw/restore callbacks support Anchal Agarwal
2020-07-10 18:17 ` [PATCH v2 00/11] Fix PM hibernation in Xen guests Agarwal, Anchal
2020-07-13 19:43   ` Boris Ostrovsky
2020-07-15 19:49     ` Anchal Agarwal
2020-07-15 20:49       ` Boris Ostrovsky
2020-07-16 23:28         ` Anchal Agarwal

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