From nobody Tue Feb 10 04:12:46 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 618831DF99F for ; Thu, 21 Nov 2024 18:53:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732215214; cv=none; b=KEX2HM4H4jHU/xVFNPzDK/5IWB6n0PjnKZwn+KQwUNiqQtGQ2CsULIvkn/2RckPoZgOXnknWRSgoroC+EU1d+VBc/+23lW3GfJy3ODOeSUAsJgzJnPAJSkXCk1nCRloR7OUJlxOfKzotuT3QfUIt8Q6BXkjVPADPzgevaWD3Z+A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732215214; c=relaxed/simple; bh=AdrfMvymD5zuRqTBBGGoWNJ0DY8WVGxpVB1lhy6aBew=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Rj9dWUkcHKpEdyghyXGjR36eEQHyH1i3kzcsu8Cugfwau9J3eR4yyfyPmzcf2dURGBJKymdakoPMtDyO5XyF6gmOJ/ebutK7QVTfCEMEEibf39nsjn6W/XVnRtVCVzlj7MPI+XdXM7lRMkKK5u9kT7phuvs1pAciM1ZYd4qn1dQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--mizhang.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=c6Wb3y92; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--mizhang.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="c6Wb3y92" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-6eebd4e7cc5so14915757b3.0 for ; Thu, 21 Nov 2024 10:53:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1732215211; x=1732820011; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=w7D09IdaThZ8r32cYXtPxjnC2nPk7QEMmJJMfReh37c=; b=c6Wb3y92jN9o1wPhx1H+KZtjUhOaBjvDEfYVw+FCK3DHZdtS6/wyXVHkn1aWAbJoQ2 R1pkXJaSF5eibHaUkPoqxUKHZG/cqM13vXaDgvodrGHxiywJKY/NSVA0YNQ6a+cOh1kX RgHGXskBmN0IqFYn0xFDxZVFplviQmfREwjmAweHplMDxCDWjnGsIpRubdCLnEeAeKZ+ ttEeYWv+dA0CRLP7DrOKbfN7TCvDdI0H7iEbGFMTO4yxqqyqcemDkD8P9Kzg3/9DNCwA T7J8MX5oaA2r5QoZjSE3Fy9nJsZ6oaCUtQP7EbQGheA8e1DCPGfnWzqsCdlQyMaCsoPj qgmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732215211; x=1732820011; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=w7D09IdaThZ8r32cYXtPxjnC2nPk7QEMmJJMfReh37c=; b=NPnA0QmZ/l/o1+XPW7vcKgxKT8dtpK9DZfMvTYTdpeUGK5xc4Pe/OVFVUm2rd+okd4 26NmLulnG6a1RMhmQ+NNVwMi6nv4Sq2UkufYAmWM02J/TQNVkTwRTlERPqjihkQjnTID /9pbpHfBJYr3gDFSFZjhw4aygBUORmOy4ktmyiXMsE3beLhef6oloWH9fh68kTbXtTU/ ZxdLQZk2tGvP2YOohWXnTMQLAohL44eOfoBOUXpmL26YV63Hf20CpbFTt1s2R0BLNqUV lWNJYmnf7K38f01JOHgnPA2uy2QyuKflDDJWaVs8amIxqnKR49KMGDMbS+BrEwbmsSao F5XA== X-Forwarded-Encrypted: i=1; AJvYcCVBlVVsAFL4HUAcmYrlpoaPIlwzWNNtEKTqi+PBwKejLJsJGxEhpS5y8skf6ALRdrr52r/he1zjHTbYovY=@vger.kernel.org X-Gm-Message-State: AOJu0YzfoF3ydw62kicFdNKbmo1n66lgaWqho33cbPrKzzn1F6CSH92V U+4Jsj436L/xySf+rhxysumrla5/9At7z7CMEVBV4OZmtby3s+DQV13iOmuGvP8Fc2+3xe7jmqZ Q0fm5tw== X-Google-Smtp-Source: AGHT+IFbxnZIDPmwz4a6QDx5WTc3XPCOUOGBb+6SCxkWJJgfTYLxgm8qVWZQaaUmH8BKA4bQqcQX6mWx6Kh8 X-Received: from mizhang-super.c.googlers.com ([34.105.13.176]) (user=mizhang job=sendgmr) by 2002:a81:a742:0:b0:6ee:a2b0:a803 with SMTP id 00721157ae682-6eecd2b215emr527187b3.1.1732215211264; Thu, 21 Nov 2024 10:53:31 -0800 (PST) Reply-To: Mingwei Zhang Date: Thu, 21 Nov 2024 18:53:00 +0000 In-Reply-To: <20241121185315.3416855-1-mizhang@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241121185315.3416855-1-mizhang@google.com> X-Mailer: git-send-email 2.47.0.371.ga323438b13-goog Message-ID: <20241121185315.3416855-9-mizhang@google.com> Subject: [RFC PATCH 08/22] KVM: nVMX: Nested VM-exit may transition from HALTED to RUNNABLE From: Mingwei Zhang To: Sean Christopherson , Paolo Bonzini , Huang Rui , "Gautham R. Shenoy" , Mario Limonciello , "Rafael J. Wysocki" , Viresh Kumar , Srinivas Pandruvada , Len Brown Cc: "H. Peter Anvin" , Perry Yuan , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Jim Mattson , Mingwei Zhang Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jim Mattson When a halted vCPU is awakened by a nested event, it might have been the target of a previous KVM_HC_KICK_CPU hypercall, in which case pv_unhalted would be set. This flag should be cleared before the next HLT instruction, as kvm_vcpu_has_events() would otherwise return true and prevent the vCPU from entering the halt state. Use kvm_vcpu_make_runnable() to ensure consistent handling of the HALTED to RUNNABLE state transition. Fixes: b6b8a1451fc4 ("KVM: nVMX: Rework interception of IRQs and NMIs") Signed-off-by: Jim Mattson --- arch/x86/kvm/vmx/nested.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 931a7361c30f2..202eacfd87036 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -5048,7 +5048,7 @@ void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 vm_= exit_reason, vmx->nested.need_vmcs12_to_shadow_sync =3D true; =20 /* in case we halted in L2 */ - vcpu->arch.mp_state =3D KVM_MP_STATE_RUNNABLE; + kvm_vcpu_make_runnable(vcpu); =20 if (likely(!vmx->fail)) { if (vm_exit_reason !=3D -1) --=20 2.47.0.371.ga323438b13-goog