From nobody Wed Dec 17 06:02:16 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 6307D227BB5 for ; Fri, 4 Apr 2025 19:40:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743795623; cv=none; b=LpLMhHebBr1UZ+LU6wXIRN32vMh5RwYBZpKBI5mAGuLNPUUxZGTb+76rN8k69Aoj9F0Ck6TSnZWLf2ijp/O1DE+xhWkTIFyDbdebEnwCCId5xWJ3y1KOzdLicgdOjjdaXJAedvOah1s6XgqDkTGT9brRXpl4x7kdGhcPHHqf7Jo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743795623; c=relaxed/simple; bh=ncnSIRMStjRgoaLxhUROgr9SOC8QWiUmuvo8MAqoaW0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=MDeqEfqzC2o7XgST57DbqHXu1PEKagVS89kISzDZF/YhsLZF6XW9xNGij1Ayp89JAe15XE9NDgZJauGryZSh7wACqF1BiCKWopYJxdCvBxViUsd3UzK8xBk5rPa50OXBD2woabi6/ztIUyT0gsQwOTMgz/gZyi/k4Lw8hP01QS8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=0zxUXS5V; arc=none smtp.client-ip=209.85.214.201 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--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="0zxUXS5V" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-2241e7e3addso21001185ad.1 for ; Fri, 04 Apr 2025 12:40:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1743795621; x=1744400421; 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=VCMo/RGlrbOJASvtC7+TsYQlxqkzXA/5CTBjvXO9fqA=; b=0zxUXS5VvheRhTDTt4E5k3pwatpRkZyKHSMSZmD4QylBBBgMk3QgSgF9mp30QgaqA4 JPg/4E5AfGRMSRolkKQOz5OnTdCae9BAUJX9AB3nhLoO7BTImC4pecF331gQKauUAxpH LM+xJFyC7Rt7QaoepixUnrBcYnct6Yz/NHrf4zGvegLNTslPJwZbEWgkuG+FkhM2lt7T uHF6HKYsNyyGuF2aqM30nF7QsgDNyaO0h+u2AepYWuk1EYlqp4kJBh9hVR9VLa/S5Vbp WBW6K7v7wccXnb8lAPNERJAB9ngA5dck6Dyt92ojZ+bJKMMnMeL/OjIXMtiMJPl1duTJ fbgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743795621; x=1744400421; 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=VCMo/RGlrbOJASvtC7+TsYQlxqkzXA/5CTBjvXO9fqA=; b=p3zhKa3+P3v+pRLaWSGZHRmTfmvlQZTuEAbP4t2W1UEAzA7KePa+6E0AJkRTP985bw Csc7/X9f52Mee+bZHe1W9gK7FwvjrbuBFAfQKSCtG6js0VTH9+o/i3D4r4o1VR3GdkVF ZEmHZ+Vehzh5ilOUZOKqiWHYUJ4/A+ZazsxjWfLHGcpU7hmK45kgFxi7GmeA9FjyNnad InznEVwtfioIftzIzUh5DSGeWhl9Zvn07nyzwjKlZhKnhLaEy2vtX1Eg6Mu6pqeOyx3G DPFGBCLmSh2C8bC6wYtjyUj8HIoBIdXDDYggZCtnewR9wZQvpLtK/NRIpePJxf1bKfWl /81g== X-Forwarded-Encrypted: i=1; AJvYcCVHX8aq50Qnarzb/tLVtndK5H2qxAUcGuo4B1dup76HhIs/S/oCdwRVblIV46jZHUXcSqQzZmkNExFmKUc=@vger.kernel.org X-Gm-Message-State: AOJu0YzwBNRdKxuoEHVRMOXD2OwWf0zWP8frvD8kepV1P7jM/pBPopmX hXuuN5eEZo6zUCTHfl1yxWBEV91UOoWt7G3zcLxL36qSZBtsfHbX7Iu30hCPUUluMjf9M/1k1do guA== X-Google-Smtp-Source: AGHT+IE5XbiMqRGlDARtEBjYgWidaO1ecxsBHLfL544ofCTr9/DpC8oice4f7Zykt01Y3R60ZjSJF5IkHjo= X-Received: from pfbbe6.prod.google.com ([2002:a05:6a00:1f06:b0:736:aeb1:8ace]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ccd2:b0:224:1af1:87f4 with SMTP id d9443c01a7336-22a8a06b3d0mr64838025ad.22.1743795621644; Fri, 04 Apr 2025 12:40:21 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 4 Apr 2025 12:38:35 -0700 In-Reply-To: <20250404193923.1413163-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250404193923.1413163-1-seanjc@google.com> X-Mailer: git-send-email 2.49.0.504.g3bcea36a83-goog Message-ID: <20250404193923.1413163-21-seanjc@google.com> Subject: [PATCH 20/67] KVM: VMX: Move enable_ipiv knob to common x86 From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , Joerg Roedel , David Woodhouse , Lu Baolu Cc: kvm@vger.kernel.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Maxim Levitsky , Joao Martins , David Matlack Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Move enable_ipiv to common x86 so that it can be reused by SVM to control IPI virtualization when AVIC is enabled. SVM doesn't actually provide a way to truly disable IPI virtualization, but KVM can get close enough by skipping the necessary table programming. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/vmx/capabilities.h | 1 - arch/x86/kvm/vmx/vmx.c | 2 -- arch/x86/kvm/x86.c | 3 +++ 4 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_hos= t.h index 0583d8a9c8d4..85f45fc5156d 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1932,6 +1932,7 @@ struct kvm_arch_async_pf { extern u32 __read_mostly kvm_nr_uret_msrs; extern bool __read_mostly allow_smaller_maxphyaddr; extern bool __read_mostly enable_apicv; +extern bool __read_mostly enable_ipiv; extern bool __read_mostly enable_device_posted_irqs; extern struct kvm_x86_ops kvm_x86_ops; =20 diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilitie= s.h index cb6588238f46..5316c27f6099 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -15,7 +15,6 @@ extern bool __read_mostly enable_ept; extern bool __read_mostly enable_unrestricted_guest; extern bool __read_mostly enable_ept_ad_bits; extern bool __read_mostly enable_pml; -extern bool __read_mostly enable_ipiv; extern int __read_mostly pt_mode; =20 #define PT_MODE_SYSTEM 0 diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index ac7f1df612e8..56b68db345a7 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -111,8 +111,6 @@ static bool __read_mostly fasteoi =3D 1; module_param(fasteoi, bool, 0444); =20 module_param(enable_apicv, bool, 0444); - -bool __read_mostly enable_ipiv =3D true; module_param(enable_ipiv, bool, 0444); =20 module_param(enable_device_posted_irqs, bool, 0444); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 23376fcd928c..52d8d0635603 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -227,6 +227,9 @@ EXPORT_SYMBOL_GPL(allow_smaller_maxphyaddr); bool __read_mostly enable_apicv =3D true; EXPORT_SYMBOL_GPL(enable_apicv); =20 +bool __read_mostly enable_ipiv =3D true; +EXPORT_SYMBOL_GPL(enable_ipiv); + bool __read_mostly enable_device_posted_irqs =3D true; EXPORT_SYMBOL_GPL(enable_device_posted_irqs); =20 --=20 2.49.0.504.g3bcea36a83-goog