From nobody Fri Apr 4 03:49:58 2025 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 17419418069996.664129451092208; Fri, 14 Mar 2025 01:43:26 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cR-0002Hh-VX; Fri, 14 Mar 2025 04:42:16 -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 1tt0cP-0002HB-97 for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:13 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cM-0007HG-3B for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:12 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8CxaWrd69NnrDyWAA--.59747S3; Fri, 14 Mar 2025 16:42:05 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxb8fZ69NnIYlKAA--.13771S3; Fri, 14 Mar 2025 16:42:04 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org, Markus Armbruster , Paolo Bonzini Subject: [PATCH v2 1/3] target/loongarch: Fix error handling of KVM feature checks Date: Fri, 14 Mar 2025 16:41:59 +0800 Message-Id: <20250314084201.4182054-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250314084201.4182054-1-maobibo@loongson.cn> References: <20250314084201.4182054-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMBxb8fZ69NnIYlKAA--.13771S3 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 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: 1741941808822019000 Content-Type: text/plain; charset="utf-8" For some paravirt KVM features, if user forces to enable it however KVM does not support, qemu should fail to run and exit immediately, rather than continue to run. Here set error message and return directly in function kvm_arch_init_vcpu(). Fixes: 6edd2a9bec90 (target/loongarch/kvm: Implement LoongArch PMU extensio= n) Fixes: 936c3f4d7916 (target/loongarch: Use auto method with LSX feature) Fixes: 5e360dabedb1 (target/loongarch: Use auto method with LASX feature) Fixes: 620d9bd0022e (target/loongarch: Add paravirt ipi feature detection) Signed-off-by: Bibo Mao Reviewed-by: Markus Armbruster Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/loongarch/kvm/kvm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index 28735c80be..7f63e7c8fe 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -1081,7 +1081,6 @@ int kvm_arch_init_vcpu(CPUState *cs) int ret; Error *local_err =3D NULL; =20 - ret =3D 0; qemu_add_vm_change_state_handler(kvm_loongarch_vm_stage_change, cs); =20 if (!kvm_get_one_reg(cs, KVM_REG_LOONGARCH_DEBUG_INST, &val)) { @@ -1091,29 +1090,34 @@ int kvm_arch_init_vcpu(CPUState *cs) ret =3D kvm_cpu_check_lsx(cs, &local_err); if (ret < 0) { error_report_err(local_err); + return ret; } =20 ret =3D kvm_cpu_check_lasx(cs, &local_err); if (ret < 0) { error_report_err(local_err); + return ret; } =20 ret =3D kvm_cpu_check_lbt(cs, &local_err); if (ret < 0) { error_report_err(local_err); + return ret; } =20 ret =3D kvm_cpu_check_pmu(cs, &local_err); if (ret < 0) { error_report_err(local_err); + return ret; } =20 ret =3D kvm_cpu_check_pv_features(cs, &local_err); if (ret < 0) { error_report_err(local_err); + return ret; } =20 - return ret; + return 0; } =20 static bool loongarch_get_lbt(Object *obj, Error **errp) --=20 2.39.3 From nobody Fri Apr 4 03:49:58 2025 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 1741941806235317.6518257290086; Fri, 14 Mar 2025 01:43:26 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cS-0002It-9l; Fri, 14 Mar 2025 04:42:16 -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 1tt0cR-0002Ht-4q for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:15 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cM-0007HH-Mo for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:14 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8Bxjazd69NnsDyWAA--.25828S3; Fri, 14 Mar 2025 16:42:05 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxb8fZ69NnIYlKAA--.13771S4; Fri, 14 Mar 2025 16:42:05 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org, Markus Armbruster , Paolo Bonzini Subject: [PATCH v2 2/3] hw/loongarch/virt: Remove unnecessary NULL pointer checking Date: Fri, 14 Mar 2025 16:42:00 +0800 Message-Id: <20250314084201.4182054-3-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250314084201.4182054-1-maobibo@loongson.cn> References: <20250314084201.4182054-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMBxb8fZ69NnIYlKAA--.13771S4 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 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: 1741941810047019100 Content-Type: text/plain; charset="utf-8" There is NULL pointer checking function error_propagate() already, it is not necessary to add checking for function parameter. Here remove NULL pointer checking with function parameter. Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index a5840ff968..d82676d316 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -868,21 +868,24 @@ static void virt_cpu_pre_plug(HotplugHandler *hotplug= _dev, error_setg(&err, "Invalid thread-id %u specified, must be in range 1= :%u", cpu->thread_id, ms->smp.threads - 1); - goto out; + error_propagate(errp, err); + return; } =20 if ((cpu->core_id < 0) || (cpu->core_id >=3D ms->smp.cores)) { error_setg(&err, "Invalid core-id %u specified, must be in range 1:%= u", cpu->core_id, ms->smp.cores - 1); - goto out; + error_propagate(errp, err); + return; } =20 if ((cpu->socket_id < 0) || (cpu->socket_id >=3D ms->smp.sockets))= { error_setg(&err, "Invalid socket-id %u specified, must be in range 1= :%u", cpu->socket_id, ms->smp.sockets - 1); - goto out; + error_propagate(errp, err); + return; } =20 topo.socket_id =3D cpu->socket_id; @@ -895,7 +898,8 @@ static void virt_cpu_pre_plug(HotplugHandler *hotplug_d= ev, "cpu(id%d=3D%d:%d:%d) with arch-id %" PRIu64 " exis= ts", cs->cpu_index, cpu->socket_id, cpu->core_id, cpu->thread_id, cpu_slot->arch_id); - goto out; + error_propagate(errp, err); + return; } } else { /* For cold-add cpu, find empty cpu slot */ @@ -912,10 +916,6 @@ static void virt_cpu_pre_plug(HotplugHandler *hotplug_= dev, cpu->phy_id =3D cpu_slot->arch_id; cs->cpu_index =3D cpu_slot - ms->possible_cpus->cpus; numa_cpu_pre_plug(cpu_slot, dev, &err); -out: - if (err) { - error_propagate(errp, err); - } } =20 static void virt_cpu_unplug_request(HotplugHandler *hotplug_dev, @@ -935,9 +935,7 @@ static void virt_cpu_unplug_request(HotplugHandler *hot= plug_dev, } =20 hotplug_handler_unplug_request(HOTPLUG_HANDLER(lvms->acpi_ged), dev, &= err); - if (err) { - error_propagate(errp, err); - } + error_propagate(errp, err); } =20 static void virt_cpu_unplug(HotplugHandler *hotplug_dev, @@ -1001,9 +999,8 @@ static void virt_cpu_plug(HotplugHandler *hotplug_dev, =20 if (lvms->acpi_ged) { hotplug_handler_plug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, &err); - if (err) { - error_propagate(errp, err); - } + error_propagate(errp, err); + return; } =20 return; --=20 2.39.3 From nobody Fri Apr 4 03:49:58 2025 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 1741941806429171.17157250833804; Fri, 14 Mar 2025 01:43:26 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cZ-0002KH-1U; Fri, 14 Mar 2025 04:42:23 -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 1tt0cT-0002JV-To for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:19 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt0cM-0007HK-Fg for qemu-devel@nongnu.org; Fri, 14 Mar 2025 04:42:17 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxWXHd69NntDyWAA--.58836S3; Fri, 14 Mar 2025 16:42:05 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxb8fZ69NnIYlKAA--.13771S5; Fri, 14 Mar 2025 16:42:05 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org, Markus Armbruster , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 3/3] target/loongarch: Remove unnecessary temporary variable assignment Date: Fri, 14 Mar 2025 16:42:01 +0800 Message-Id: <20250314084201.4182054-4-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250314084201.4182054-1-maobibo@loongson.cn> References: <20250314084201.4182054-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMBxb8fZ69NnIYlKAA--.13771S5 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 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: 1741941808604019000 Temporary variable ret is assigned at last line and return, it can be removed and return directly. Signed-off-by: Bibo Mao Reviewed-by: Markus Armbruster Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/loongarch/tcg/tlb_helper.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/target/loongarch/tcg/tlb_helper.c b/target/loongarch/tcg/tlb_h= elper.c index 646dbf59de..182881a237 100644 --- a/target/loongarch/tcg/tlb_helper.c +++ b/target/loongarch/tcg/tlb_helper.c @@ -543,7 +543,7 @@ target_ulong helper_lddir(CPULoongArchState *env, targe= t_ulong base, target_ulong level, uint32_t mem_idx) { CPUState *cs =3D env_cpu(env); - target_ulong badvaddr, index, phys, ret; + target_ulong badvaddr, index, phys; uint64_t dir_base, dir_width; =20 if (unlikely((level =3D=3D 0) || (level > 4))) { @@ -571,8 +571,7 @@ target_ulong helper_lddir(CPULoongArchState *env, targe= t_ulong base, get_dir_base_width(env, &dir_base, &dir_width, level); index =3D (badvaddr >> dir_base) & ((1 << dir_width) - 1); phys =3D base | index << 3; - ret =3D ldq_phys(cs->as, phys) & TARGET_PHYS_MASK; - return ret; + return ldq_phys(cs->as, phys) & TARGET_PHYS_MASK; } =20 void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong = odd, --=20 2.39.3