From patchwork Tue Mar 28 12:31:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhaotianrui X-Patchwork-Id: 76037 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2179916vqo; Tue, 28 Mar 2023 05:34:07 -0700 (PDT) X-Google-Smtp-Source: AKy350aDr6ADkgkwI2XBX94shuR11zKHIf+/sB7X4nCWCCRcX0W+hToLPJQHW2zQjPUZr5lGRLg/ X-Received: by 2002:a17:90b:4a0b:b0:23b:4439:4179 with SMTP id kk11-20020a17090b4a0b00b0023b44394179mr16677281pjb.28.1680006846806; Tue, 28 Mar 2023 05:34:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680006846; cv=none; d=google.com; s=arc-20160816; b=tx1sx0pU3bJAqIQNR828z+8NMA5y5Ale24TWNAE8qX2dczI3G9AVKGpPEYNQC6euXI U/ZAgttQ8PAHtUcpbD/U7YGANSYPWkDZRW17dBBADZ7QdxiUogqgU7p4sO9lJF7FCEzJ 8rSbSYG233IgRkjEzfN4V2jhhX+EB4CUHE+zEB7i69LNqO/KrAsS+fcJMB5yQSsTpJ10 YUZygSfI5q5dUAZlsafwGMMD50NhqxHiS56Bt4vQ/FinNAASY03/Cjsa8Ld6wdACzHqy LKBaysftQ50OgLaWn1g9f3ieU3eGBK+vslupstWLn8c++1bAoRhUA7WkEIrEKJ3Ax/eM fXRw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=tM92QZe+/zUW/NCjPwdI8FPwC/53qbXZP6ejjTMN9AQ=; b=xcHJiK8fiA3aetC2qZ7E348nYZLXYy8mAqpM7oDg0rVeA7EqU6mw5TdmhJDPq7m+7z oLvjKn77vKthscIlqmX3jcBR8htpRUdhRDd25mIpXfiZWp2XdRhxy1ukEjhcN1qwnwoH eNvi/K2on/xAHcPsyjO9a/EHOPhmR5v7O6Z1r9Jx8VKjU2E8kEjwT9v6K7bHzr1meDs2 cpI9KILfy0lS3XpBnse1Ak7NrLHQHMWQzz9ONIGs0KcMFShsCW0ahPdSXpbGxYpCcfI/ DTXOjlch2WZeLMEiVUzljGHz4aLYuZcrgY1b3xW6LelUoS79h5eR9ZKwrq9lYfF0nDwo 5TLw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 65-20020a630244000000b0051323b8a185si10400858pgc.811.2023.03.28.05.33.54; Tue, 28 Mar 2023 05:34:06 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232893AbjC1McJ (ORCPT + 99 others); Tue, 28 Mar 2023 08:32:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232562AbjC1Mbr (ORCPT ); Tue, 28 Mar 2023 08:31:47 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id CCE809754; Tue, 28 Mar 2023 05:31:25 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxJDQb3iJkJBkTAA--.29844S3; Tue, 28 Mar 2023 20:31:23 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxPL4X3iJku2cPAA--.12046S15; Tue, 28 Mar 2023 20:31:22 +0800 (CST) From: Tianrui Zhao To: Paolo Bonzini Cc: Huacai Chen , WANG Xuerui , Greg Kroah-Hartman , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Jens Axboe , Mark Brown , Alex Deucher , Oliver Upton , maobibo@loongson.cn, Xi Ruoyao , zhaotianrui@loongson.cn Subject: [PING PATCH v4 13/29] LoongArch: KVM: Implement misc vcpu related interfaces Date: Tue, 28 Mar 2023 20:31:03 +0800 Message-Id: <20230328123119.3649361-14-zhaotianrui@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230328123119.3649361-1-zhaotianrui@loongson.cn> References: <20230328123119.3649361-1-zhaotianrui@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxPL4X3iJku2cPAA--.12046S15 X-CM-SenderInfo: p2kd03xldq233l6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjvJXoWxJw4kXFW3JF4xtry7uF4fuFg_yoW5Cry5pr 1xC3y5X3yrGr47Gw1ftrs09rsI9w4kKr17Zry7W3yavr4DKF15Jw48KrWDAFW5Jr1rZF1S vrn8Ja1Dua1Yya7anT9S1TB71UUUUjJqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b4AFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wA2ocxC64kIII0Yj41l84x0c7CEw4 AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF 7I0E14v26r4UJVWxJr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6x kF7I0E14v26F4UJVW0owAaw2AFwI0_JF0_Jw1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAq jxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E74AGY7Cv6c x26rWlOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxkF7I0En4kS14v26r12 6r1DMxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1sIEY20_WwCFx2IqxVCFs4IE7xkEbV WUJVW8JwCFI7km07C267AKxVWUAVWUtwC20s026c02F40E14v26r1j6r18MI8I3I0E7480 Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7 IYx2IY67AKxVWDJVCq3wCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr1j6F4UJwCI42IY6I8E87Iv6x kF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7xRiTKZJUUUUU== X-Spam-Status: No, score=-0.0 required=5.0 tests=SPF_HELO_PASS,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761614859413382928?= X-GMAIL-MSGID: =?utf-8?q?1761614859413382928?= Implement some misc vcpu relaterd interfaces, such as vcpu runnable, vcpu should kick, vcpu dump regs, etc. Signed-off-by: Tianrui Zhao --- arch/loongarch/kvm/vcpu.c | 95 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 4c3b41fd1..131aa2240 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -13,6 +13,101 @@ #define CREATE_TRACE_POINTS #include "trace.h" +int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) +{ + return !!(vcpu->arch.irq_pending); +} + +int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) +{ + return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE; +} + +bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) +{ + return false; +} + +vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) +{ + return VM_FAULT_SIGBUS; +} + +int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, + struct kvm_translation *tr) +{ + return -EINVAL; +} + +int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) +{ + return _kvm_pending_timer(vcpu) || + kvm_read_hw_gcsr(LOONGARCH_CSR_ESTAT) & + (1 << (EXCCODE_TIMER - EXCCODE_INT_START)); +} + +int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu) +{ + int i; + + if (!vcpu) + return -1; + + kvm_debug("VCPU Register Dump:\n"); + kvm_debug("\tpc = 0x%08lx\n", vcpu->arch.pc); + kvm_debug("\texceptions: %08lx\n", vcpu->arch.irq_pending); + + for (i = 0; i < 32; i += 4) { + kvm_debug("\tgpr%02d: %08lx %08lx %08lx %08lx\n", i, + vcpu->arch.gprs[i], + vcpu->arch.gprs[i + 1], + vcpu->arch.gprs[i + 2], vcpu->arch.gprs[i + 3]); + } + + kvm_debug("\tCRMOD: 0x%08llx, exst: 0x%08llx\n", + kvm_read_hw_gcsr(LOONGARCH_CSR_CRMD), + kvm_read_hw_gcsr(LOONGARCH_CSR_ESTAT)); + + kvm_debug("\tERA: 0x%08llx\n", kvm_read_hw_gcsr(LOONGARCH_CSR_ERA)); + + return 0; +} + +int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + return -ENOIOCTLCMD; +} + +int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + return -ENOIOCTLCMD; +} + +int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg) +{ + return -EINVAL; +} + +/** + * kvm_migrate_count() - Migrate timer. + * @vcpu: Virtual CPU. + * + * Migrate hrtimer to the current CPU by cancelling and restarting it + * if it was running prior to being cancelled. + * + * Must be called when the VCPU is migrated to a different CPU to ensure that + * timer expiry during guest execution interrupts the guest and causes the + * interrupt to be delivered in a timely manner. + */ +static void kvm_migrate_count(struct kvm_vcpu *vcpu) +{ + if (hrtimer_cancel(&vcpu->arch.swtimer)) + hrtimer_restart(&vcpu->arch.swtimer); +} + int _kvm_getcsr(struct kvm_vcpu *vcpu, unsigned int id, u64 *v) { unsigned long val;