From mboxrd@z Thu Jan 1 00:00:00 1970 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 mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8423C433F5 for ; Tue, 4 Jan 2022 19:49:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 5C26249F14; Tue, 4 Jan 2022 14:49:33 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 556NSdmml6xa; Tue, 4 Jan 2022 14:49:32 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2463449EE5; Tue, 4 Jan 2022 14:49:32 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E890849EE5 for ; Tue, 4 Jan 2022 14:49:30 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tkXf1xDoEQiw for ; Tue, 4 Jan 2022 14:49:30 -0500 (EST) Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id E53D449F12 for ; Tue, 4 Jan 2022 14:49:29 -0500 (EST) Received: by mail-pj1-f74.google.com with SMTP id p4-20020a17090a348400b001b103a13f69so350104pjb.8 for ; Tue, 04 Jan 2022 11:49:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=A6x6Pw7kLwqSVAYV5QWuRkaeBaCvukF54j0t8jOjIWo=; b=ptX0vg9YdIJXEIv+bPi9miN6Phs8Gqz7sBU2QWQsUtqw2kQGQwiABtW992ywk4hZ+W 0Yjxd+YrHiAZDx5j9yYFCFkPbsVaZ0Me2jeZ8/Yp1nLtpTRU3glZ/AFWrivJ3Ne9PxOZ wEEkRcAX+0GHmJL3/IL+wNt/VFmeQ8X8mW6bJyPiNxpnLVbR0aLEbdEA2Ze9gi6qqQ3C poU1KuO3mU1pkPlTHi2tto1rMBI3uHO8ySMfK3Luj4uIlnnCmLez6qNGPpgKaKGbE9tx WkPLsVqsmNEpEEThs9CKJ8Tw+DYsrLXtA1p0adzY5K5eZnk7V3wXfESrD7ST2e9CTHW1 RFAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=A6x6Pw7kLwqSVAYV5QWuRkaeBaCvukF54j0t8jOjIWo=; b=nl+QXrkB+P+6CyUbQfnzL0WuZhPbASNB4i3ajEK543kD/NaRUYVn5/Zg6t9vPRbdFH djlkv6QnjHriFQcyMtLh+812y0AytgBlG7g8G1D7Y1BYQE3qEz1Tm5llvYyx3QhdZR9A uwxEBx4Vawfr7mBmY50WP5sTRYm0nW8lytJILHszS/n7Eplc0oflmLOBOaT8pFwJTzP6 4MwN2kX1NL1WeK86Fhin7OP5c07FgEXH6J2GGiqtJfRtUnzwgK25Kyt4M1ryD1PI8/KI dUj5oeMTks+jC+P2BTT1RlphpS6dwGDBgKugBTNUPNFSssbu8C1/gn4ExabvfnYlLOo3 CbzQ== X-Gm-Message-State: AOAM532bKfuRuCIG8gQuSK+8MmnKboBISYul31YpbCxatYuz1yxZfOwi A1JkB1eqZe8cDf+UxKph0fiwUKj+qFpz X-Google-Smtp-Source: ABdhPJwl3NnGF1TfkZRlci6WjMWULIHIZ/BPa4U45UMKx/oZHTzTtRdYJEOxN/Xl1feLxe+jPtf4xNYvI4PH X-Received: from rananta-virt.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1bcc]) (user=rananta job=sendgmr) by 2002:a17:90b:3809:: with SMTP id mq9mr62274740pjb.245.1641325768929; Tue, 04 Jan 2022 11:49:28 -0800 (PST) Date: Tue, 4 Jan 2022 19:49:08 +0000 In-Reply-To: <20220104194918.373612-1-rananta@google.com> Message-Id: <20220104194918.373612-2-rananta@google.com> Mime-Version: 1.0 References: <20220104194918.373612-1-rananta@google.com> X-Mailer: git-send-email 2.34.1.448.ga2b2bfdf31-goog Subject: [RFC PATCH v3 01/11] KVM: Capture VM start From: Raghavendra Rao Ananta To: Marc Zyngier , Andrew Jones , James Morse , Alexandru Elisei , Suzuki K Poulose Cc: kvm@vger.kernel.org, Catalin Marinas , Peter Shier , linux-kernel@vger.kernel.org, Paolo Bonzini , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Capture the start of the KVM VM, which is basically the start of any vCPU run. This state of the VM is helpful in the upcoming patches to prevent user-space from configuring certain VM features after the VM has started running. Signed-off-by: Raghavendra Rao Ananta --- include/linux/kvm_host.h | 3 +++ virt/kvm/kvm_main.c | 9 +++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c310648cc8f1..d0bd8f7a026c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -623,6 +623,7 @@ struct kvm { struct notifier_block pm_notifier; #endif char stats_id[KVM_STATS_NAME_SIZE]; + bool vm_started; }; #define kvm_err(fmt, ...) \ @@ -1666,6 +1667,8 @@ static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) } } +#define kvm_vm_has_started(kvm) (kvm->vm_started) + extern bool kvm_rebooting; extern unsigned int halt_poll_ns; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 72c4e6b39389..962b91ac2064 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3686,6 +3686,7 @@ static long kvm_vcpu_ioctl(struct file *filp, int r; struct kvm_fpu *fpu = NULL; struct kvm_sregs *kvm_sregs = NULL; + struct kvm *kvm = vcpu->kvm; if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_dead) return -EIO; @@ -3723,6 +3724,14 @@ static long kvm_vcpu_ioctl(struct file *filp, if (oldpid) synchronize_rcu(); put_pid(oldpid); + + /* + * Since we land here even on the first vCPU run, + * we can mark that the VM has started running. + */ + mutex_lock(&kvm->lock); + kvm->vm_started = true; + mutex_unlock(&kvm->lock); } r = kvm_arch_vcpu_ioctl_run(vcpu); trace_kvm_userspace_exit(vcpu->run->exit_reason, r); -- 2.34.1.448.ga2b2bfdf31-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 00A41C433FE for ; Tue, 4 Jan 2022 19:51:09 +0000 (UTC) DKIM-Signature: v=1; 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Tue, 04 Jan 2022 11:49:28 -0800 (PST) Date: Tue, 4 Jan 2022 19:49:08 +0000 In-Reply-To: <20220104194918.373612-1-rananta@google.com> Message-Id: <20220104194918.373612-2-rananta@google.com> Mime-Version: 1.0 References: <20220104194918.373612-1-rananta@google.com> X-Mailer: git-send-email 2.34.1.448.ga2b2bfdf31-goog Subject: [RFC PATCH v3 01/11] KVM: Capture VM start From: Raghavendra Rao Ananta To: Marc Zyngier , Andrew Jones , James Morse , Alexandru Elisei , Suzuki K Poulose Cc: Paolo Bonzini , Catalin Marinas , Will Deacon , Peter Shier , Ricardo Koller , Oliver Upton , Reiji Watanabe , Jing Zhang , Raghavendra Rao Anata , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, kvm@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220104_114930_932422_E8F69A91 X-CRM114-Status: GOOD ( 12.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Capture the start of the KVM VM, which is basically the start of any vCPU run. This state of the VM is helpful in the upcoming patches to prevent user-space from configuring certain VM features after the VM has started running. Signed-off-by: Raghavendra Rao Ananta --- include/linux/kvm_host.h | 3 +++ virt/kvm/kvm_main.c | 9 +++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c310648cc8f1..d0bd8f7a026c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -623,6 +623,7 @@ struct kvm { struct notifier_block pm_notifier; #endif char stats_id[KVM_STATS_NAME_SIZE]; + bool vm_started; }; #define kvm_err(fmt, ...) \ @@ -1666,6 +1667,8 @@ static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) } } +#define kvm_vm_has_started(kvm) (kvm->vm_started) + extern bool kvm_rebooting; extern unsigned int halt_poll_ns; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 72c4e6b39389..962b91ac2064 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3686,6 +3686,7 @@ static long kvm_vcpu_ioctl(struct file *filp, int r; struct kvm_fpu *fpu = NULL; struct kvm_sregs *kvm_sregs = NULL; + struct kvm *kvm = vcpu->kvm; if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_dead) return -EIO; @@ -3723,6 +3724,14 @@ static long kvm_vcpu_ioctl(struct file *filp, if (oldpid) synchronize_rcu(); put_pid(oldpid); + + /* + * Since we land here even on the first vCPU run, + * we can mark that the VM has started running. + */ + mutex_lock(&kvm->lock); + kvm->vm_started = true; + mutex_unlock(&kvm->lock); } r = kvm_arch_vcpu_ioctl_run(vcpu); trace_kvm_userspace_exit(vcpu->run->exit_reason, r); -- 2.34.1.448.ga2b2bfdf31-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3DF6C433F5 for ; Tue, 4 Jan 2022 19:49:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231439AbiADTta (ORCPT ); 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charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Capture the start of the KVM VM, which is basically the start of any vCPU run. This state of the VM is helpful in the upcoming patches to prevent user-space from configuring certain VM features after the VM has started running. Signed-off-by: Raghavendra Rao Ananta --- include/linux/kvm_host.h | 3 +++ virt/kvm/kvm_main.c | 9 +++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c310648cc8f1..d0bd8f7a026c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -623,6 +623,7 @@ struct kvm { struct notifier_block pm_notifier; #endif char stats_id[KVM_STATS_NAME_SIZE]; + bool vm_started; }; #define kvm_err(fmt, ...) \ @@ -1666,6 +1667,8 @@ static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) } } +#define kvm_vm_has_started(kvm) (kvm->vm_started) + extern bool kvm_rebooting; extern unsigned int halt_poll_ns; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 72c4e6b39389..962b91ac2064 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3686,6 +3686,7 @@ static long kvm_vcpu_ioctl(struct file *filp, int r; struct kvm_fpu *fpu = NULL; struct kvm_sregs *kvm_sregs = NULL; + struct kvm *kvm = vcpu->kvm; if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_dead) return -EIO; @@ -3723,6 +3724,14 @@ static long kvm_vcpu_ioctl(struct file *filp, if (oldpid) synchronize_rcu(); put_pid(oldpid); + + /* + * Since we land here even on the first vCPU run, + * we can mark that the VM has started running. + */ + mutex_lock(&kvm->lock); + kvm->vm_started = true; + mutex_unlock(&kvm->lock); } r = kvm_arch_vcpu_ioctl_run(vcpu); trace_kvm_userspace_exit(vcpu->run->exit_reason, r); -- 2.34.1.448.ga2b2bfdf31-goog