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dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=PEFEgJDw DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1774381424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=; b=n031BixcOB1TXteDcoVZ0zbAOgEnVYA9yBNrBF9//Ev/k7dvhh11GAeHyZq2PX8Zrsl81Y pqPMlrZlYyQC0tN3jiXmf/ew84dYU1N37QzNUjxa5trVusqQyjxQz2RNEMYo/EPUeKzc9Q H/60EoGNytkvxwTGCYGIfqrdrursXHM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1774381424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mqFU08QiemyHMKmACwXdYM3VqArmk1wjvFdrAmao4JI=; b=PEFEgJDwPPJ0lriYoNtNuwkSsyPzRUce5oP2DiM0gTJvRSIQwRGUw9YED0fgOFOTkUK8yu rjCHXmEVn9cPuDBA== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Peter Xu , Alexander Mikhalitsyn , Juraj Marcin Subject: [RFC PATCH v1 05/17] vmstate: Remove vmdesc_loop Date: Tue, 24 Mar 2026 16:43:20 -0300 Message-ID: <20260324194333.30004-6-farosas@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260324194333.30004-1-farosas@suse.de> References: <20260324194333.30004-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-3.01 / 50.00]; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:2; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1774381510777158500 Content-Type: text/plain; charset="utf-8" The vmdesc_loop variable is being used as a hacky way of writing the JSON description only for the first element of a compressed array. There are also a few implicit uses, such as writing the JSON for the first non-compressed element after a compressed portion. Future work will have trouble with this. Use a simple boolean to be explicit now. Signed-off-by: Fabiano Rosas --- migration/vmstate.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/migration/vmstate.c b/migration/vmstate.c index dec9cf920b..7a12245d36 100644 --- a/migration/vmstate.c +++ b/migration/vmstate.c @@ -622,8 +622,9 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMSt= ateDescription *vmsd, void *first_elem =3D opaque + field->offset; int i, n_elems =3D vmstate_n_elems(opaque, field); int size =3D vmstate_size(opaque, field); - JSONWriter *vmdesc_loop =3D vmdesc; bool is_null_prev =3D false; + bool use_vmdesc =3D true; + /* * When this is enabled, it means we will always push a ptr * marker first for each element saying if it's populated. @@ -673,7 +674,7 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMSt= ateDescription *vmsd, is_null !=3D is_null_prev) { =20 is_null_prev =3D is_null; - vmdesc_loop =3D vmdesc; + use_vmdesc =3D true; =20 for (int j =3D i + 1; j < n_elems; j++) { void *elem =3D *(void **)(first_elem + size * j); @@ -686,8 +687,13 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VMS= tateDescription *vmsd, } } =20 + if (use_dynamic_array) { + use_vmdesc =3D true; + } + ok =3D vmstate_save_field_with_vmdesc(f, curr_elem, size, = vmsd, - inner_field, vmdesc_lo= op, + inner_field, + use_vmdesc ? vmdesc : = NULL, i, max_elems, errp); =20 /* If we used a fake temp field.. free it now */ @@ -708,19 +714,16 @@ static bool vmstate_save_vmsd_v(QEMUFile *f, const VM= StateDescription *vmsd, * NOTE: do not use vmstate_size() here because we want * to dump the real VMSD object now. */ - ok =3D vmstate_save_field_with_vmdesc(f, curr_elem, - field->size, vmsd, - field, vmdesc_loop, - i, max_elems, errp= ); + ok =3D vmstate_save_field_with_vmdesc( + f, curr_elem, field->size, vmsd, field, + use_vmdesc ? vmdesc : NULL, i, max_elems, errp); + if (!ok) { goto out; } } =20 - /* Compressed arrays only care about the first element */ - if (vmdesc_loop && vmsd_can_compress(field)) { - vmdesc_loop =3D NULL; - } + use_vmdesc =3D false; } } else { if (field->flags & VMS_MUST_EXIST) { --=20 2.51.0