From nobody Mon Feb 9 19:06:35 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; dmarc=fail(p=none dis=none) header.from=huawei.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1629170935218817.9820921544075; Mon, 16 Aug 2021 20:28:55 -0700 (PDT) Received: from localhost ([::1]:38812 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mFpmY-0001CU-79 for importer@patchew.org; Mon, 16 Aug 2021 23:28:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48584) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mFpj2-0008I3-Nx; Mon, 16 Aug 2021 23:25:16 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:2206) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mFpiy-0005m1-N4; Mon, 16 Aug 2021 23:25:16 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4Gpbxp6JbPz86dq; Tue, 17 Aug 2021 11:25:02 +0800 (CST) Received: from dggpemm000001.china.huawei.com (7.185.36.245) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 17 Aug 2021 11:25:09 +0800 Received: from huawei.com (10.174.186.236) by dggpemm000001.china.huawei.com (7.185.36.245) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 17 Aug 2021 11:25:08 +0800 From: Yifei Jiang To: , Subject: [PATCH RFC v6 07/12] target/riscv: Support setting external interrupt by KVM Date: Tue, 17 Aug 2021 11:24:42 +0800 Message-ID: <20210817032447.2055-8-jiangyifei@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 In-Reply-To: <20210817032447.2055-1-jiangyifei@huawei.com> References: <20210817032447.2055-1-jiangyifei@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.174.186.236] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm000001.china.huawei.com (7.185.36.245) X-CFilter-Loop: Reflected 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=45.249.212.189; envelope-from=jiangyifei@huawei.com; helo=szxga03-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bin.meng@windriver.com, limingwang@huawei.com, kvm@vger.kernel.org, libvir-list@redhat.com, anup.patel@wdc.com, Yifei Jiang , Alistair Francis , kvm-riscv@lists.infradead.org, wanghaibin.wang@huawei.com, palmer@dabbelt.com, fanliang@huawei.com, wu.wubin@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1629170935595100001 Content-Type: text/plain; charset="utf-8" Extend riscv_cpu_update_mip() to support setting external interrupt by KVM. It will call kvm_riscv_set_irq() to change the IRQ state in the KVM module When kvm is enabled and the MIP_SEIP bit is set in "mask" In addition, bacause target/riscv/cpu_helper.c is used to TCG, so move riscv_cpu_update_mip() to target/riscv/cpu.c from target/riscv/cpu_helper.c Signed-off-by: Yifei Jiang Signed-off-by: Mingwang Li Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 34 ++++++++++++++++++++++++++++++++++ target/riscv/cpu_helper.c | 27 --------------------------- target/riscv/kvm-stub.c | 5 +++++ target/riscv/kvm.c | 20 ++++++++++++++++++++ target/riscv/kvm_riscv.h | 1 + 5 files changed, 60 insertions(+), 27 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 764fd39928..2251784f7b 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -21,6 +21,7 @@ #include "qemu/qemu-print.h" #include "qemu/ctype.h" #include "qemu/log.h" +#include "qemu/main-loop.h" #include "cpu.h" #include "internals.h" #include "exec/exec-all.h" @@ -144,6 +145,39 @@ static void set_feature(CPURISCVState *env, int featur= e) env->features |=3D (1ULL << feature); } =20 +#ifndef CONFIG_USER_ONLY +uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value) +{ + CPURISCVState *env =3D &cpu->env; + CPUState *cs =3D CPU(cpu); + uint32_t old =3D env->mip; + bool locked =3D false; + + if (!qemu_mutex_iothread_locked()) { + locked =3D true; + qemu_mutex_lock_iothread(); + } + + env->mip =3D (env->mip & ~mask) | (value & mask); + + if (kvm_enabled() && (mask & MIP_SEIP)) { + kvm_riscv_set_irq(RISCV_CPU(cpu), IRQ_S_EXT, value & MIP_SEIP); + } + + if (env->mip) { + cpu_interrupt(cs, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); + } + + if (locked) { + qemu_mutex_unlock_iothread(); + } + + return old; +} +#endif + static void set_resetvec(CPURISCVState *env, target_ulong resetvec) { #ifndef CONFIG_USER_ONLY diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 968cb8046f..0b88bda07a 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -224,33 +224,6 @@ int riscv_cpu_claim_interrupts(RISCVCPU *cpu, uint32_t= interrupts) } } =20 -uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value) -{ - CPURISCVState *env =3D &cpu->env; - CPUState *cs =3D CPU(cpu); - uint32_t old =3D env->mip; - bool locked =3D false; - - if (!qemu_mutex_iothread_locked()) { - locked =3D true; - qemu_mutex_lock_iothread(); - } - - env->mip =3D (env->mip & ~mask) | (value & mask); - - if (env->mip) { - cpu_interrupt(cs, CPU_INTERRUPT_HARD); - } else { - cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); - } - - if (locked) { - qemu_mutex_unlock_iothread(); - } - - return old; -} - void riscv_cpu_set_rdtime_fn(CPURISCVState *env, uint64_t (*fn)(uint32_t), uint32_t arg) { diff --git a/target/riscv/kvm-stub.c b/target/riscv/kvm-stub.c index 39b96fe3f4..4e8fc31a21 100644 --- a/target/riscv/kvm-stub.c +++ b/target/riscv/kvm-stub.c @@ -23,3 +23,8 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu) { abort(); } + +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) +{ + abort(); +} diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index ee76371116..bc9cb5d8f9 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -453,6 +453,26 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu) env->satp =3D 0; } =20 +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) +{ + int ret; + unsigned virq =3D level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET; + + if (irq !=3D IRQ_S_EXT) { + return; + } + + if (!kvm_enabled()) { + return; + } + + ret =3D kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq); + if (ret < 0) { + perror("Set irq failed"); + abort(); + } +} + bool kvm_arch_cpu_check_are_resettable(void) { return true; diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index f38c82bf59..ed281bdce0 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -20,5 +20,6 @@ #define QEMU_KVM_RISCV_H =20 void kvm_riscv_reset_vcpu(RISCVCPU *cpu); +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); =20 #endif --=20 2.19.1