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Tue, 10 Dec 2019 07:19:47 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id CDF7111386A7; Tue, 10 Dec 2019 08:19:45 +0100 (CET) From: Markus Armbruster To: Vladimir Sementsov-Ogievskiy Subject: Re: [PATCH v8 07/21] ppc: well form kvmppc_hint_smt_possible error hint helper References: <20191205174635.18758-1-vsementsov@virtuozzo.com> <20191205174635.18758-8-vsementsov@virtuozzo.com> Date: Tue, 10 Dec 2019 08:19:45 +0100 In-Reply-To: <20191205174635.18758-8-vsementsov@virtuozzo.com> (Vladimir Sementsov-Ogievskiy's message of "Thu, 5 Dec 2019 20:46:21 +0300") Message-ID: <87h828odf2.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: Li9mtpf_Ou26YD1imLi4Sg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kurz , David Gibson , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, armbru@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Vladimir Sementsov-Ogievskiy writes: > Make kvmppc_hint_smt_possible hint append helper well formed: > switch errp paramter to Error *const * type, as it has uncommon > behavior: not change the pointer to return error, but operate on > already existent error object. > Rename function to be kvmppc_error_append_*_hint. > > Signed-off-by: Vladimir Sementsov-Ogievskiy > Reviewed-by: Greg Kurz Let's adapt PATCH 03's commit message, like this: ppc: make Error **errp const where it is appropriate Mostly, Error ** is for returning error from the function, so the callee sets it. However kvmppc_hint_smt_possible gets already filled errp parameter. It doesn't change the pointer itself, only change the internal state of referenced Error object. So we can make it Error *const * errp, to stress the behavior. It will also help coccinelle script (in future) to distinguish such cases from common errp usage. While there, rename the function to kvmppc_error_append_smt_possible_hint(). With something like that: Reviewed-by: Markus Armbruster