24.01.2022 23:15, Alex Bennée wrote:
From: Michael Tokarev <m...@tls.msk.ru>

For a long time, we assumed that libxml2 is necessary for parallels
block format support (block/parallels*). However, this format actually
does not use libxml [*]. Since this is the only user of libxml2 in
whole QEMU tree, we can drop all libxml2 checks and dependencies too.

It is even more: --enable-parallels configure option was the only
option which was silently ignored when it's (fake) dependency
(libxml2) isn't installed.

Drop all mentions of libxml2.

[*] Actually the basis for libxml use were introduced in commit
     ed279a06c53 ("configure: add dependency") but the implementation
     was never merged:
     
https://lore.kernel.org/qemu-devel/70227bbd-a517-70e9-714f-e6e0ec431...@openvz.org/

Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
Message-Id: <20220119090423.149315-1-...@msgid.tls.msk.ru>
Tested-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
[PMD: Updated description and adapted to use lcitool]
Reviewed-by: Thomas Huth <th...@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
Message-Id: <20220121154134.315047-5-f4...@amsat.org>

Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>

Parallels format includes xml disk descriptor format, which was never merged to 
Qemu. Yes, the introduced dependency was premature, sorry for that :(

The implementation of xml part was sent, but only for someone other who want to 
continue this work, Virtuozzo don't have such plans now:

https://lists.gnu.org/archive/html/qemu-devel/2020-11/msg03601.html

--
Best regards,
Vladimir

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