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From: Paolo Bonzini <pbonzini@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>,
	Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: qemu-devel@nongnu.org, agraf@suse.de, qemu-ppc@nongnu.org,
	mdroth@linux.vnet.ibm.com, bharata@linux.vnet.ibm.com
Subject: Re: [Qemu-devel] [RFCv2 1/2] spapr: Remove unnecessary owner field from sPAPRDRConnector
Date: Mon, 14 Sep 2015 14:11:53 +0200	[thread overview]
Message-ID: <55F6B989.8010900@redhat.com> (raw)
In-Reply-To: <20150914114503.GP2547@voom.fritz.box>

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On 14/09/2015 13:45, David Gibson wrote:
>>> 
>>> === * There is no way for a child to determine what its parent
>>> is.  It is not * a bidirectional relationship.  This is by
>>> design. ===
>>> 
>>> This part always confused me as there is "Object *parent" in
>>> the "struct Object". So there is way to determine but it must
>>> not be used? Is it debug only?
>>> 
>>> Anyway, all members of the Object class are under /*< private
>>> >*/ so they should not be accesses in sPAPR code, I believe.
> Ah, good point, I missed that.  I guess we have to keep the owner 
> field, redundant though it seems.  Blech.

I think the comment is wrong or at least inaccurate; it only applies
to the external QOM interface.  The patch is a good idea, even though
OBJECT(x)->y traditionally is not used (instead you assign OBJECT(x) to
a different Object* variable).

Paolo
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  reply	other threads:[~2015-09-14 12:12 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-14  1:41 [Qemu-devel] [RFCv2 0/2] spapr: Cleanups to dynamic reconfiguration mechanism David Gibson
2015-09-14  1:41 ` [Qemu-devel] [RFCv2 1/2] spapr: Remove unnecessary owner field from sPAPRDRConnector David Gibson
2015-09-14  6:23   ` Bharata B Rao
2015-09-14  8:22   ` Alexey Kardashevskiy
2015-09-14 11:45     ` David Gibson
2015-09-14 12:11       ` Paolo Bonzini [this message]
2015-09-14 14:06         ` Alexey Kardashevskiy
2015-09-14 14:24           ` Paolo Bonzini
2015-09-16  3:16             ` David Gibson
2015-09-17 15:50               ` Michael Roth
2015-09-17 15:53                 ` Paolo Bonzini
2015-09-17 23:03                   ` Michael Roth
2015-09-17 15:01             ` Michael Roth
2015-09-15  0:31           ` David Gibson
2015-09-15  0:30         ` David Gibson
2015-09-15 11:05           ` Paolo Bonzini
2015-09-14  1:41 ` [Qemu-devel] [RFCv2 2/2] spapr: Don't use QOM [*] syntax for DR connectors David Gibson
2015-09-14  4:07   ` Bharata B Rao
2015-09-14  4:14     ` David Gibson
2015-09-14  4:41       ` Bharata B Rao
2015-09-14  5:20         ` David Gibson
2015-09-14  8:13   ` Alexey Kardashevskiy
2015-09-15  4:03   ` Michael Roth
2015-09-15  4:21     ` Michael Roth
2015-09-16  3:18     ` David Gibson

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