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From: Gerd Hoffmann <kraxel@redhat.com>
To: Claudio Fontana <cfontana@suse.de>
Cc: "David Hildenbrand" <david@redhat.com>,
	qemu-devel@nongnu.org, "Eric Blake" <eblake@redhat.com>,
	"Samuel Thibault" <samuel.thibault@ens-lyon.org>,
	qemu-block@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>,
	"Halil Pasic" <pasic@linux.ibm.com>,
	"Christian Borntraeger" <borntraeger@de.ibm.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Thomas Huth" <thuth@redhat.com>,
	"Michael Roth" <michael.roth@amd.com>,
	"Peter Lieven" <pl@kamp.de>,
	qemu-s390x@nongnu.org,
	"Ronnie Sahlberg" <ronniesahlberg@gmail.com>,
	"José Ricardo Ziviani" <jose.ziviani@suse.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Kevin Wolf" <kwolf@redhat.com>,
	berrange@redhat.com, "Cornelia Huck" <cohuck@redhat.com>,
	"Max Reitz" <mreitz@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>
Subject: Re: [PATCH v2 00/18] modules: add metadata database
Date: Mon, 14 Jun 2021 16:07:06 +0200	[thread overview]
Message-ID: <20210614140706.o7vqhweo3oqklhct@sirius.home.kraxel.org> (raw)
In-Reply-To: <a33c7fda-0865-525b-5138-e87b6233f9a2@suse.de>

 Hi,

> Based on the information you provided, the reason this whole series
> exists seems to be to remove the need to update modules in multiple
> places.

Well, I'm trying to improve the way we handle module meta-data (see
other mail just send for details).

> Is there a real need to copy over the mechanism from the kernel, or
> are the requirements actually different/simpler here?

Even though the exact kind of meta-data is different (qemu wants know
qom types implemented by module, kernel wants know what hardware a
module can drive) the fundamental problem is the same:  We need some
meta-data about modules for lookup.  The workflow is simliar too:
The meta-data is stored in a .modinfo elf section.  Then a utility
collects that data and stores them in a database.

For the kernel 'depmod' stores the data in
/lib/modules/$version/modules.$name (with modules.alias being the
largest database).

I'm trying to have qemu-modinfo store this in modinfo.json.

take care,
  Gerd



      reply	other threads:[~2021-06-14 14:08 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-10  5:57 [PATCH v2 00/18] modules: add metadata database Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 01/18] modules: add metadata macros, add qxl module annotations Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 02/18] qapi: add ModuleInfo schema Gerd Hoffmann
2021-06-14  7:48   ` Markus Armbruster
2021-06-14 15:21     ` Gerd Hoffmann
2021-06-14 16:53       ` Markus Armbruster
2021-06-10  5:57 ` [PATCH v2 03/18] modules: add qemu-modinfo utility Gerd Hoffmann
2021-06-10 13:04   ` Gerd Hoffmann
2021-06-10 13:13     ` Daniel P. Berrangé
2021-06-14  8:34       ` Paolo Bonzini
2021-06-14 14:36         ` Paolo Bonzini
2021-06-15  4:49           ` Gerd Hoffmann
2021-06-15  7:56             ` Gerd Hoffmann
2021-06-15 13:07               ` Gerd Hoffmann
2021-06-15 13:35                 ` Paolo Bonzini
2021-06-16  9:16                   ` Gerd Hoffmann
2021-06-16 10:53                     ` Paolo Bonzini
2021-06-14 15:01         ` Gerd Hoffmann
2021-06-14 15:08           ` Daniel P. Berrangé
2021-06-15  4:54             ` Gerd Hoffmann
2021-06-15  9:27               ` Daniel P. Berrangé
2021-06-10  5:57 ` [PATCH v2 04/18] modules: add virtio-gpu module annotations Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 05/18] modules: add chardev " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 06/18] modules: add audio " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 07/18] modules: add usb-redir " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 08/18] modules: add ccid " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 09/18] modules: add ui " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 10/18] modules: add s390x " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 11/18] modules: add block " Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 12/18] modules: add module_load_path_init helper Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 13/18] modules: load modinfo.json Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 14/18] modules: use modinfo for dependencies Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 15/18] modules: use modinfo for qom load Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 16/18] modules: use modinfo for qemu opts load Gerd Hoffmann
2021-06-10  5:57 ` [PATCH v2 17/18] modules: check arch and block load on mismatch Gerd Hoffmann
2021-06-10 12:35   ` Daniel P. Berrangé
2021-06-10 12:57     ` Gerd Hoffmann
2021-06-10 13:06       ` Daniel P. Berrangé
2021-06-10 14:03         ` Gerd Hoffmann
2021-06-14 11:23           ` Claudio Fontana
2021-06-14 13:44             ` Gerd Hoffmann
2021-06-14 13:52               ` Daniel P. Berrangé
2021-06-14 14:10                 ` Gerd Hoffmann
2021-06-14 11:19     ` Claudio Fontana
2021-06-10  5:57 ` [PATCH v2 18/18] [fixup] module_load_modinfo Gerd Hoffmann
2021-06-10  6:24   ` Gerd Hoffmann
2021-06-10  8:32 ` [PATCH v2 00/18] modules: add metadata database Claudio Fontana
2021-06-10  9:54   ` Gerd Hoffmann
2021-06-14 11:31     ` Claudio Fontana
2021-06-14 14:07       ` Gerd Hoffmann [this message]

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