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From: Olaf Hering <olaf@aepfle.de>
To: Juergen Gross <jgross@suse.com>
Cc: xen-devel@lists.xenproject.org, Ian Jackson <iwj@xenproject.org>,
	Wei Liu <wl@xen.org>, Anthony PERARD <anthony.perard@citrix.com>
Subject: Re: [PATCH v20210601 02/38] xl: fix description of migrate --debug
Date: Wed, 2 Jun 2021 12:43:24 +0200	[thread overview]
Message-ID: <20210602124324.1bd02cd7.olaf@aepfle.de> (raw)
In-Reply-To: <58453bfc-d932-3b46-7ec8-cd883b4c7440@suse.com>

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Am Wed, 2 Jun 2021 08:09:00 +0200
schrieb Juergen Gross <jgross@suse.com>:

> > -    if ( ctx->save.debug && ctx->stream_type != XC_STREAM_PLAIN )
> > +    if ( ctx->save.debug )  
> This is no documentation change IMO. You should either mention this
> modification in the commit message, or put it into a separate patch.

I think the conclusion was that this branch is dead code because
only the stream_type==XC_STREAM_PLAIN code branch sets debug.


So far there is a decision to be made about this code branch:
- document it
- remove it
- fix it

The latter might be impossible due to lack of APIs to query the usage of a given page.

But, perhaps remus and/or colo does not suffer from apparent corruption.
One day I should create a remus and a colo setup to exercise these code paths. 


Olaf

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  reply	other threads:[~2021-06-02 10:43 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-01 16:10 [PATCH v20210601 00/38] leftover from 2020 Olaf Hering
2021-06-01 16:10 ` [PATCH v20210601 01/38] tools: add API to work with sevaral bits at once Olaf Hering
2021-06-02  6:19   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 02/38] xl: fix description of migrate --debug Olaf Hering
2021-06-02  6:09   ` Juergen Gross
2021-06-02 10:43     ` Olaf Hering [this message]
2021-06-02 11:43       ` Juergen Gross
2021-06-02 12:32   ` [PATCH v20210602 " Olaf Hering
2021-06-02 13:48     ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 03/38] tools: create libxensaverestore Olaf Hering
2021-06-01 16:10 ` [PATCH v20210601 04/38] tools: add readv_exact to libxenctrl Olaf Hering
2021-06-02  6:30   ` Juergen Gross
2021-06-02 10:57     ` Olaf Hering
2021-06-02 11:05       ` Olaf Hering
2021-06-02 11:41       ` Juergen Gross
2021-06-07  9:46         ` Olaf Hering
2021-06-07 11:31         ` Olaf Hering
2021-06-01 16:10 ` [PATCH v20210601 05/38] tools: add xc_is_known_page_type " Olaf Hering
2021-06-02  6:51   ` Juergen Gross
2021-06-02 11:10     ` Olaf Hering
2021-06-02 11:48       ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 06/38] tools: use xc_is_known_page_type Olaf Hering
2021-06-02  6:53   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 07/38] tools: unify type checking for data pfns in migration stream Olaf Hering
2021-06-02  6:59   ` Juergen Gross
2021-06-02 11:21     ` Olaf Hering
2021-06-02 12:03       ` Juergen Gross
2021-06-07 10:12         ` Olaf Hering
2021-06-07 10:22           ` Juergen Gross
2021-06-18 12:25     ` Olaf Hering
2021-06-01 16:10 ` [PATCH v20210601 08/38] tools: show migration transfer rate in send_dirty_pages Olaf Hering
2021-06-02  7:10   ` Juergen Gross
2021-06-08  8:58     ` Olaf Hering
2021-06-08 10:07       ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 09/38] tools/guest: prepare to allocate arrays once Olaf Hering
2021-06-02  7:29   ` Juergen Gross
2021-06-02 12:03     ` Olaf Hering
2021-06-02 12:09       ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 10/38] tools/guest: save: move batch_pfns Olaf Hering
2021-06-02  7:31   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 11/38] tools/guest: save: move mfns array Olaf Hering
2021-06-02  7:32   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 12/38] tools/guest: save: move types array Olaf Hering
2021-06-02  7:32   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 13/38] tools/guest: save: move errors array Olaf Hering
2021-06-02  7:33   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 14/38] tools/guest: save: move iov array Olaf Hering
2021-06-02  7:34   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 15/38] tools/guest: save: move rec_pfns array Olaf Hering
2021-06-02  7:35   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 16/38] tools/guest: save: move guest_data array Olaf Hering
2021-06-02  7:39   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 17/38] tools/guest: save: move local_pages array Olaf Hering
2021-06-02  7:47   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 18/38] tools/guest: restore: move pfns array Olaf Hering
2021-06-02  7:55   ` Juergen Gross
2021-06-01 16:10 ` [PATCH v20210601 19/38] tools/guest: restore: move types array Olaf Hering
2021-06-02  7:56   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 20/38] tools/guest: restore: move mfns array Olaf Hering
2021-06-02  7:57   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 21/38] tools/guest: restore: move map_errs array Olaf Hering
2021-06-02  7:58   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 22/38] tools/guest: restore: move mfns array in populate_pfns Olaf Hering
2021-06-02  7:59   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 23/38] tools/guest: restore: move pfns " Olaf Hering
2021-06-02  7:59   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 24/38] tools/guest: restore: split record processing Olaf Hering
2021-06-02  9:57   ` Juergen Gross
2021-06-01 16:11 ` [PATCH v20210601 25/38] tools/guest: restore: split handle_page_data Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 26/38] tools/guest: restore: write data directly into guest Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 27/38] tools: recognize LIBXL_API_VERSION for 4.16 Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 28/38] tools: adjust libxl_domain_suspend to receive a struct props Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 29/38] tools: change struct precopy_stats to precopy_stats_t Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 30/38] tools: add callback to libxl for precopy_policy and precopy_stats_t Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 31/38] tools: add --max_iters to libxl_domain_suspend Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 32/38] tools: add --min_remaining " Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 33/38] tools: add --abort_if_busy " Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 34/38] tools: add API for expandable bitmaps Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 35/38] tools: use xg_sr_bitmap for populated_pfns Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 36/38] tools: use superpages during restore of HVM guest Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 37/38] tools: remove migration stream verify code Olaf Hering
2021-06-01 16:11 ` [PATCH v20210601 38/38] hotplug/Linux: fix starting of xenstored with restarting systemd Olaf Hering
2021-06-02  6:10 ` [PATCH v20210601 00/38] leftover from 2020 Juergen Gross
2021-06-02  6:54   ` Olaf Hering
2021-06-02  7:00     ` Juergen Gross
2021-06-02 12:07       ` Olaf Hering
2021-06-02 12:15         ` Juergen Gross

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