From patchwork Mon Oct 9 09:01:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13413113 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F3971E95A8E for ; Mon, 9 Oct 2023 09:03:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qpmA1-0002JQ-1M; Mon, 09 Oct 2023 05:02:45 -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 1qpm9p-0002E9-4P for qemu-devel@nongnu.org; Mon, 09 Oct 2023 05:02:33 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qpm9g-00062m-Po for qemu-devel@nongnu.org; Mon, 09 Oct 2023 05:02:32 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8CxtPCYwSNlqT0wAA--.27965S3; Mon, 09 Oct 2023 17:02:16 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dx_y+TwSNlDW4cAA--.59991S10; Mon, 09 Oct 2023 17:02:16 +0800 (CST) From: xianglai li To: qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: Tianrui Zhao , "Michael S. Tsirkin" , Cornelia Huck , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , Peter Maydell , Bibo Mao , Song Gao , Xiaojuan Yang Subject: [PATCH RFC v4 8/9] target/loongarch: Implement set vcpu intr for kvm Date: Mon, 9 Oct 2023 17:01:36 +0800 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Dx_y+TwSNlDW4cAA--.59991S10 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=lixianglai@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 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Tianrui Zhao Implement loongarch kvm set vcpu interrupt interface, when a irq is set in vcpu, we use the KVM_INTERRUPT ioctl to set intr into kvm. Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: Paolo Bonzini Cc: "Marc-André Lureau" Cc: "Daniel P. Berrangé" Cc: Thomas Huth Cc: "Philippe Mathieu-Daudé" Cc: Richard Henderson Cc: Peter Maydell Cc: Bibo Mao Cc: Song Gao Cc: Xiaojuan Yang Cc: Tianrui Zhao Signed-off-by: Tianrui Zhao Signed-off-by: xianglai li --- target/loongarch/cpu.c | 18 +++++++++++++----- target/loongarch/kvm-stub.c | 11 +++++++++++ target/loongarch/kvm.c | 15 +++++++++++++++ target/loongarch/kvm_loongarch.h | 13 +++++++++++++ target/loongarch/trace-events | 1 + 5 files changed, 53 insertions(+), 5 deletions(-) create mode 100644 target/loongarch/kvm-stub.c create mode 100644 target/loongarch/kvm_loongarch.h diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 61344c7ad2..670612dd0b 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -20,6 +20,11 @@ #include "sysemu/reset.h" #include "tcg/tcg.h" #include "vec.h" +#include "sysemu/kvm.h" +#include "kvm_loongarch.h" +#ifdef CONFIG_KVM +#include +#endif const char * const regnames[32] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", @@ -108,12 +113,15 @@ void loongarch_cpu_set_irq(void *opaque, int irq, int level) return; } - env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0); - - if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) { - cpu_interrupt(cs, CPU_INTERRUPT_HARD); + if (kvm_enabled()) { + kvm_loongarch_set_interrupt(cpu, irq, level); } else { - cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); + env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0); + if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) { + cpu_interrupt(cs, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); + } } } diff --git a/target/loongarch/kvm-stub.c b/target/loongarch/kvm-stub.c new file mode 100644 index 0000000000..9965c1f119 --- /dev/null +++ b/target/loongarch/kvm-stub.c @@ -0,0 +1,11 @@ +/* + * QEMU KVM LoongArch specific function stubs + * + * Copyright (c) 2023 Loongson Technology Corporation Limited + */ +#include "cpu.h" + +void kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level) +{ + g_assert_not_reached(); +} diff --git a/target/loongarch/kvm.c b/target/loongarch/kvm.c index 0fe52434ed..d1111f8d5f 100644 --- a/target/loongarch/kvm.c +++ b/target/loongarch/kvm.c @@ -574,6 +574,21 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) return ret; } +int kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level) +{ + struct kvm_interrupt intr; + CPUState *cs = CPU(cpu); + + if (level) { + intr.irq = irq; + } else { + intr.irq = -irq; + } + + trace_kvm_set_intr(irq, level); + return kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr); +} + void kvm_arch_accel_class_init(ObjectClass *oc) { } diff --git a/target/loongarch/kvm_loongarch.h b/target/loongarch/kvm_loongarch.h new file mode 100644 index 0000000000..cdef980eec --- /dev/null +++ b/target/loongarch/kvm_loongarch.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU LoongArch kvm interface + * + * Copyright (c) 2023 Loongson Technology Corporation Limited + */ + +#ifndef QEMU_KVM_LOONGARCH_H +#define QEMU_KVM_LOONGARCH_H + +int kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level); + +#endif diff --git a/target/loongarch/trace-events b/target/loongarch/trace-events index 6cce653b20..3263406ebe 100644 --- a/target/loongarch/trace-events +++ b/target/loongarch/trace-events @@ -14,3 +14,4 @@ kvm_failed_put_counter(const char *msg) "Failed to put counter into KVM: %s" kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s" kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s" kvm_arch_handle_exit(int num) "kvm arch handle exit, the reason number: %d" +kvm_set_intr(int irq, int level) "kvm set interrupt, irq num: %d, level: %d"