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Re: [PATCH 00/18] qapi/qom: QAPIfy object-add

From: Paolo Bonzini
Subject: Re: [PATCH 00/18] qapi/qom: QAPIfy object-add
Date: Wed, 2 Dec 2020 13:30:18 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0

On 02/12/20 11:38, Kevin Wolf wrote:
Am 02.12.2020 um 10:30 hat Paolo Bonzini geschrieben:
On 01/12/20 23:08, Eduardo Habkost wrote:
Properties are only a useful concept if they have a use.  If
-object/object_add/object-add can do the same job without properties,
properties are not needed anymore.

Do you mean "not needed for -object anymore"?  Properties are
still used by internal C code (esp. board code),
-device/device_add, -machine, -cpu, and debugging commands (like
"info qtree" and qom-list/qom-get/qom-set).


Are internal uses mostly just right after object creation, or do we make
a lot of use of them during runtime?

Not "a lot" but enough to be nasty. There are a couple uses of "well-known" QOM properties (e.g. to access the RTC time or the balloon stats), plus "info qtree".


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