From nobody Mon Feb 9 23:02:48 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1576559453; cv=none; d=zohomail.com; s=zohoarc; b=I8RhxpNvTXScTG6FuQF2eO1QI5itsEWPR7SoxTYGo45A8G21fVItIV6pSsWhludkmImWNfXylbfr7wbNmenZkyDBsk4Nt0WDjjo8EpCIgod2s8JDsPE5091dCJueX9nu1khX6nmjDoQi7B4z53+QGjiXP52beY6ZWX4fbh91Bws= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1576559453; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=13gjeaD0Zgs7tisjajGc9LcpOuhCRLgpFVJAkj1yE6w=; b=ZqyalEQ7XU42E72AqnzqEkBeS+lQIdyxMl4qQ/JMlHFVf96GUwi+VK+7EHB/4yHW4eUvVP8dvt3OjR3vHmMEzUKo6BWpMzS+jv0+T1e2kNecmFgQwyn2K7Rr/hUzTNANGVGO1HdbKTIsvSZq8JNlVO2CjQ85CAysPfWoTUqFLAs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1576559453795782.4858911600719; Mon, 16 Dec 2019 21:10:53 -0800 (PST) Received: from localhost ([::1]:35482 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ih58G-000334-4W for importer@patchew.org; Tue, 17 Dec 2019 00:10:52 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34261) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ih4iq-0000p0-8o for qemu-devel@nongnu.org; Mon, 16 Dec 2019 23:44:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ih4in-0006FU-Qv for qemu-devel@nongnu.org; Mon, 16 Dec 2019 23:44:35 -0500 Received: from bilbo.ozlabs.org ([2401:3900:2:1::2]:33735 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ih4in-0005nf-G2; Mon, 16 Dec 2019 23:44:33 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id 47cQWW2zbBz9sSw; Tue, 17 Dec 2019 15:43:32 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1576557815; bh=aHFtWdrb+8pmavyOXG6lJ9YUtDF+TfjGta6fhwbERI0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G+ehzKJr/jacEzz1apPYITGlMaQ3ZYh6IIbfqXXJdeVFPa/aszwAPQzL3FbdVwvU0 HXQKqpyYDI7EewCmGMsy+yOSEOvN7UWakwgowdXpuN0Fm+rKMIJVcXhmVd0gSSlbx9 6wrAaJMbUnFOikW7MmIDHvxslptdRkjAe+mvVKvg= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 29/88] ppc/pnv: Instantiate cores separately Date: Tue, 17 Dec 2019 15:42:23 +1100 Message-Id: <20191217044322.351838-30-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191217044322.351838-1-david@gibson.dropbear.id.au> References: <20191217044322.351838-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2401:3900:2:1::2 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: lvivier@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Greg Kurz Allocating a big void * array to store multiple objects isn't a recommended practice for various reasons: - no compile time type checking - potential dangling pointers if a reference on an individual is taken and the array is freed later on - duplicate boiler plate everywhere the array is browsed through Allocate an array of pointers and populate it instead. Signed-off-by: Greg Kurz Signed-off-by: C=C3=A9dric Le Goater Message-Id: <20191125065820.927-4-clg@kaod.org> Signed-off-by: David Gibson --- hw/ppc/pnv.c | 30 ++++++++++++------------------ include/hw/ppc/pnv.h | 2 +- 2 files changed, 13 insertions(+), 19 deletions(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index f0adb06c8d..d899c83e52 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -280,14 +280,12 @@ static void pnv_dt_icp(PnvChip *chip, void *fdt, uint= 32_t pir, =20 static void pnv_chip_power8_dt_populate(PnvChip *chip, void *fdt) { - const char *typename =3D pnv_chip_core_typename(chip); - size_t typesize =3D object_type_get_instance_size(typename); int i; =20 pnv_dt_xscom(chip, fdt, 0); =20 for (i =3D 0; i < chip->nr_cores; i++) { - PnvCore *pnv_core =3D PNV_CORE(chip->cores + i * typesize); + PnvCore *pnv_core =3D chip->cores[i]; =20 pnv_dt_core(chip, pnv_core, fdt); =20 @@ -302,14 +300,12 @@ static void pnv_chip_power8_dt_populate(PnvChip *chip= , void *fdt) =20 static void pnv_chip_power9_dt_populate(PnvChip *chip, void *fdt) { - const char *typename =3D pnv_chip_core_typename(chip); - size_t typesize =3D object_type_get_instance_size(typename); int i; =20 pnv_dt_xscom(chip, fdt, 0); =20 for (i =3D 0; i < chip->nr_cores; i++) { - PnvCore *pnv_core =3D PNV_CORE(chip->cores + i * typesize); + PnvCore *pnv_core =3D chip->cores[i]; =20 pnv_dt_core(chip, pnv_core, fdt); } @@ -913,8 +909,6 @@ static void pnv_chip_icp_realize(Pnv8Chip *chip8, Error= **errp) { PnvChip *chip =3D PNV_CHIP(chip8); PnvChipClass *pcc =3D PNV_CHIP_GET_CLASS(chip); - const char *typename =3D pnv_chip_core_typename(chip); - size_t typesize =3D object_type_get_instance_size(typename); int i, j; char *name; XICSFabric *xi =3D XICS_FABRIC(qdev_get_machine()); @@ -928,7 +922,7 @@ static void pnv_chip_icp_realize(Pnv8Chip *chip8, Error= **errp) =20 /* Map the ICP registers for each thread */ for (i =3D 0; i < chip->nr_cores; i++) { - PnvCore *pnv_core =3D PNV_CORE(chip->cores + i * typesize); + PnvCore *pnv_core =3D chip->cores[i]; int core_hwid =3D CPU_CORE(pnv_core)->core_id; =20 for (j =3D 0; j < CPU_CORE(pnv_core)->nr_threads; j++) { @@ -1108,8 +1102,6 @@ static void pnv_chip_power9_instance_init(Object *obj) static void pnv_chip_quad_realize(Pnv9Chip *chip9, Error **errp) { PnvChip *chip =3D PNV_CHIP(chip9); - const char *typename =3D pnv_chip_core_typename(chip); - size_t typesize =3D object_type_get_instance_size(typename); int i; =20 chip9->nr_quads =3D DIV_ROUND_UP(chip->nr_cores, 4); @@ -1118,7 +1110,7 @@ static void pnv_chip_quad_realize(Pnv9Chip *chip9, Er= ror **errp) for (i =3D 0; i < chip9->nr_quads; i++) { char eq_name[32]; PnvQuad *eq =3D &chip9->quads[i]; - PnvCore *pnv_core =3D PNV_CORE(chip->cores + (i * 4) * typesize); + PnvCore *pnv_core =3D chip->cores[i * 4]; int core_id =3D CPU_CORE(pnv_core)->core_id; =20 snprintf(eq_name, sizeof(eq_name), "eq[%d]", core_id); @@ -1290,7 +1282,6 @@ static void pnv_chip_core_realize(PnvChip *chip, Erro= r **errp) Error *error =3D NULL; PnvChipClass *pcc =3D PNV_CHIP_GET_CLASS(chip); const char *typename =3D pnv_chip_core_typename(chip); - size_t typesize =3D object_type_get_instance_size(typename); int i, core_hwid; =20 if (!object_class_by_name(typename)) { @@ -1305,21 +1296,24 @@ static void pnv_chip_core_realize(PnvChip *chip, Er= ror **errp) return; } =20 - chip->cores =3D g_malloc0(typesize * chip->nr_cores); + chip->cores =3D g_new0(PnvCore *, chip->nr_cores); =20 for (i =3D 0, core_hwid =3D 0; (core_hwid < sizeof(chip->cores_mask) *= 8) && (i < chip->nr_cores); core_hwid++) { char core_name[32]; - void *pnv_core =3D chip->cores + i * typesize; + PnvCore *pnv_core; uint64_t xscom_core_base; =20 if (!(chip->cores_mask & (1ull << core_hwid))) { continue; } =20 + pnv_core =3D PNV_CORE(object_new(typename)); + snprintf(core_name, sizeof(core_name), "core[%d]", core_hwid); - object_initialize_child(OBJECT(chip), core_name, pnv_core, typesiz= e, - typename, &error_fatal, NULL); + object_property_add_child(OBJECT(chip), core_name, OBJECT(pnv_core= ), + &error_abort); + chip->cores[i] =3D pnv_core; object_property_set_int(OBJECT(pnv_core), ms->smp.threads, "nr-thr= eads", &error_fatal); object_property_set_int(OBJECT(pnv_core), core_hwid, @@ -1340,7 +1334,7 @@ static void pnv_chip_core_realize(PnvChip *chip, Erro= r **errp) } =20 pnv_xscom_add_subregion(chip, xscom_core_base, - &PNV_CORE(pnv_core)->xscom_regs); + &pnv_core->xscom_regs); i++; } } diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index 90f1343ed0..03cb429f21 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -56,7 +56,7 @@ typedef struct PnvChip { =20 uint32_t nr_cores; uint64_t cores_mask; - void *cores; + PnvCore **cores; =20 MemoryRegion xscom_mmio; MemoryRegion xscom; --=20 2.23.0