From nobody Tue Feb 10 07:42:02 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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 1710748996030571.9873248394146; Mon, 18 Mar 2024 01:03:16 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rm7w9-0003gV-5v; Mon, 18 Mar 2024 04:01:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rm7w8-0003fF-3u for qemu-devel@nongnu.org; Mon, 18 Mar 2024 04:01:36 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rm7w3-0001SM-1t for qemu-devel@nongnu.org; Mon, 18 Mar 2024 04:01:34 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8BxXevT9PdlVUAaAA--.63095S3; Mon, 18 Mar 2024 16:01:23 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Bx8OTR9PdliWtcAA--.46553S3; Mon, 18 Mar 2024 16:01:22 +0800 (CST) From: Bibo Mao To: Song Gao Cc: qemu-devel@nongnu.org Subject: [PATCH 1/5] hw/loongarch: Refine acpi srat table for numa memory Date: Mon, 18 Mar 2024 16:01:17 +0800 Message-Id: <20240318080121.2836548-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240318080121.2836548-1-maobibo@loongson.cn> References: <20240318080121.2836548-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf8Bx8OTR9PdliWtcAA--.46553S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== 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; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: 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-ZM-MESSAGEID: 1710748996352100001 Content-Type: text/plain; charset="utf-8" One LoongArch virt machine platform, there is limitation for memory map information. The minimum memory size is 256M and minimum memory size for numa node0 is 256M also. With qemu numa qtest, it is possible that memory size of numa node0 is 128M. Limitations for minimum memory size for both total memory and numa node0 is removed for acpi srat table creation. Signed-off-by: Bibo Mao --- hw/loongarch/acpi-build.c | 58 +++++++++++++++++++++++---------------- 1 file changed, 34 insertions(+), 24 deletions(-) diff --git a/hw/loongarch/acpi-build.c b/hw/loongarch/acpi-build.c index e5ab1080af..d0247d93ee 100644 --- a/hw/loongarch/acpi-build.c +++ b/hw/loongarch/acpi-build.c @@ -165,8 +165,9 @@ static void build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) { int i, arch_id, node_id; - uint64_t mem_len, mem_base; - int nb_numa_nodes =3D machine->numa_state->num_nodes; + hwaddr len, base, gap; + NodeInfo *numa_info; + int nodes, nb_numa_nodes =3D machine->numa_state->num_nodes; LoongArchMachineState *lams =3D LOONGARCH_MACHINE(machine); MachineClass *mc =3D MACHINE_GET_CLASS(lams); const CPUArchIdList *arch_ids =3D mc->possible_cpu_arch_ids(machine); @@ -195,35 +196,44 @@ build_srat(GArray *table_data, BIOSLinker *linker, Ma= chineState *machine) build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } =20 - /* Node0 */ - build_srat_memory(table_data, VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, - 0, MEM_AFFINITY_ENABLED); - mem_base =3D VIRT_HIGHMEM_BASE; - if (!nb_numa_nodes) { - mem_len =3D machine->ram_size - VIRT_LOWMEM_SIZE; - } else { - mem_len =3D machine->numa_state->nodes[0].node_mem - VIRT_LOWMEM_S= IZE; + base =3D VIRT_LOWMEM_BASE; + gap =3D VIRT_LOWMEM_SIZE; + numa_info =3D machine->numa_state->nodes; + nodes =3D nb_numa_nodes; + if (!nodes) { + nodes =3D 1; } - if (mem_len) - build_srat_memory(table_data, mem_base, mem_len, 0, MEM_AFFINITY_E= NABLED); - - /* Node1 - Nodemax */ - if (nb_numa_nodes) { - mem_base +=3D mem_len; - for (i =3D 1; i < nb_numa_nodes; ++i) { - if (machine->numa_state->nodes[i].node_mem > 0) { - build_srat_memory(table_data, mem_base, - machine->numa_state->nodes[i].node_mem, = i, - MEM_AFFINITY_ENABLED); - mem_base +=3D machine->numa_state->nodes[i].node_mem; - } + + for (i =3D 0; i < nodes; i++) { + if (nb_numa_nodes) { + len =3D numa_info[i].node_mem; + } else { + len =3D machine->ram_size; + } + + /* + * memory for the node splited into two part + * lowram: [base, +gap) + * highram: [VIRT_HIGHMEM_BASE, +(len - gap)) + */ + if (len >=3D gap) { + build_srat_memory(table_data, base, len, i, MEM_AFFINITY_ENABL= ED); + len -=3D gap; + base =3D VIRT_HIGHMEM_BASE; + gap =3D machine->ram_size - VIRT_LOWMEM_SIZE; + } + + if (len) { + build_srat_memory(table_data, base, len, i, MEM_AFFINITY_ENABL= ED); + base +=3D len; + gap -=3D len; } } =20 if (machine->device_memory) { build_srat_memory(table_data, machine->device_memory->base, memory_region_size(&machine->device_memory->mr), - nb_numa_nodes - 1, + nodes - 1, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED= ); } =20 --=20 2.39.3