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Re: [PATCH v2] tools/xl: fix channel configuration setting
- To: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Thu, 27 Feb 2025 16:10:25 +0100
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 27 Feb 2025 15:10:32 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 26.02.25 16:55, Anthony PERARD wrote:
On Tue, Feb 25, 2025 at 08:30:33AM +0100, Juergen Gross wrote:
Channels work differently than other device types: their devid should
be -1 initially in order to distinguish them from the primary console
which has the devid of 0.
So when parsing the channel configuration, use
ARRAY_EXTEND_INIT_NODEVID() in order to avoid overwriting the devid
set by libxl_device_channel_init().
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
This might want a:
Fixes: 3a6679634766 ("libxl: set channel devid when not provided by
application")
Before that, the devid set by `xl` was probably ignored. I think before,
the console devid would be taken from libxl__init_console_from_channel()
parametters, so the first devnum would be `0+1`, so never 0.
Do you agree?
I'm not sure I do. The use of ARRAY_EXTEND_INIT() in xl_parse.c predates
commit 3a6679634766, so there is certainly more than one potential Fixes:
candidate.
So at least for the xl case commit 3a6679634766 isn't relevant, and my patch
is fixing the xl case only.
In anycase:
Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Thanks,
Juergen
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