From nobody Mon Feb 9 00:01:10 2026 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 A280F2586CE for ; Tue, 26 Aug 2025 00:40:21 +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=1756168823; cv=none; b=TKIGemVkqBbEugnkkYj+kt0No7izO0J3LA6k80Pb9ormFxBfuTGV0r2WhTnQdJttuW+7s4c4x+kDmXOCO/HmYvdw9heUaZwBMxV01FKxhekBTmuNLV4513nnW8ouNjclui+Kg6gnOpOHq7U5kd/gvKllQJ/opI3XjhxkzyjTjqA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756168823; c=relaxed/simple; bh=GSD2okLRLxrD4e5YapBpGLuGmP9plExtQIHqvDp2aik=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=uVXoRLvgea0BG8PvsRrGNnl2DwMavKn9rM88wAaijnKb1pIyr3ea2O1fdzzA0iGRhreBWU953Rgofc43Tr0s1Y/G0AXFcg3CdI3DVZilU0TuWaCfM6ZZKAMqS3Gf1MLJw67ZAzE/fPoqyYKO54wtBFnYy9LR2PHYZj57a0jHVX4= 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=R0qYleyY; 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="R0qYleyY" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-2464dc09769so76756695ad.0 for ; Mon, 25 Aug 2025 17:40:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756168821; x=1756773621; 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=Ich+F/WfOl90g4mC/WhzhSp8nc7SXERneaucsAgJ2BU=; b=R0qYleyYg9l/UXt6sCk5R8VMWSzWwLUFkwpifLvLNJvVRWZzydXFJQs8B0sfRJ1PV3 0MEHY+s4va/3gBCAKA5MIs7i3kNcW0j/JSYVGmS2LWCt5urGYRBZMZs3QbhcS/xD4Y8X /wuI+Wd519AlRbzkADR1eHAk+u6dk0VpRITSsfVWItsbqKzuXjOsoukgCaYROLkljph2 owsv+QU0fbFOuDEJcFTXdFn2q09Ire2QqGI8tfpPSu9I/w/2wgrdUt95daY8tAqn6+6e GjjD8KAhBcC46l2Js2oe81PZlwWsxG4AYTV6gaPmvuoGpRlo1NaTYU1vzuO+7sKB7M23 qSvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756168821; x=1756773621; 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=Ich+F/WfOl90g4mC/WhzhSp8nc7SXERneaucsAgJ2BU=; b=izK6Svy9mInkY69HrujpQnym9zqSKpWsExXMWPNadB0l+0xBpGXptq+NNwA35yksKU ptgCgwgQcSZFCR7ZzEJKvKDHOeptjB0J48/Yvu3Rnc+Ttx7+INMap4YTK4IwJYMaEut/ zEfdqu2QrCEvfWB755HvYDp7dRY6hBZaixVSGD2qaYn9J0pxjiwF69AvUy9Czlr5XPPf uZSz+J5BM5XIR9vESrP5F7NM3FbTQOgE49n7rzSe9xvYfkcdAoDgBYPFnvcr5oOx2wl8 II25WwTnRgsTrQD5YWF774mdNRANlCz6QXMeGdlnLkMukW8zLy/smHt5ngT8Mr7/C1Le E3Uw== X-Forwarded-Encrypted: i=1; AJvYcCWKkmCNoiOVHMYNnt/bgwfd5AJiYZHWGSegKd5zT1Xjsx9tpM8fJTv1Cqfwc9K5LJmDSBSJRWU3TfXRvDg=@vger.kernel.org X-Gm-Message-State: AOJu0Yx429m6QSPouWfLAcfvGzbNm6QMaNOb2eQx/eOSRrqWj+MzNaXG 86cWOfvgOM3/rfMaIX5ahySpBTElCJZWll9BA3C71kGJ/Lncqwjhhz4vyVfKRkESyrfa+wHfC5U H8JqXxw== X-Google-Smtp-Source: AGHT+IG4vW/5MigHa/TBX8oRMlCra808eIipbqtMQjYVG19uVixcDoW82lYMlF7bL879fI0AObWue9cr2PY= X-Received: from pjyr7.prod.google.com ([2002:a17:90a:e187:b0:312:ea08:fa64]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:1a45:b0:246:ddd6:f8b9 with SMTP id d9443c01a7336-246ddd6fd04mr66484515ad.43.1756168820938; Mon, 25 Aug 2025 17:40:20 -0700 (PDT) Reply-To: Sean Christopherson Date: Mon, 25 Aug 2025 17:40:11 -0700 In-Reply-To: <20250826004012.3835150-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250826004012.3835150-1-seanjc@google.com> X-Mailer: git-send-email 2.51.0.261.g7ce5a0a67e-goog Message-ID: <20250826004012.3835150-4-seanjc@google.com> Subject: [PATCH 3/3] KVM: x86/mmu: Don't register a sigkill callback for NX hugepage recovery tasks From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , "Michael S. Tsirkin" , Jason Wang Cc: kvm@vger.kernel.org, virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Sebastian Andrzej Siewior Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Don't register a sigkill callback with vhost_task when creating NX hugepage recovery threads now that said callback is optional. In addition to removing what is effectively dead code, not registering a sigkill "handler" also guards against improper use of vhost_task_wake(). Signed-off-by: Sean Christopherson --- arch/x86/kvm/mmu/mmu.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index d11730467fd4..dd90cf8a8170 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -7677,10 +7677,6 @@ static void kvm_recover_nx_huge_pages(struct kvm *kv= m) srcu_read_unlock(&kvm->srcu, rcu_idx); } =20 -static void kvm_nx_huge_page_recovery_worker_kill(void *data) -{ -} - static bool kvm_nx_huge_page_recovery_worker(void *data) { struct kvm *kvm =3D data; @@ -7713,8 +7709,7 @@ static int kvm_mmu_start_lpage_recovery(struct once *= once) struct vhost_task *nx_thread; =20 kvm->arch.nx_huge_page_last =3D get_jiffies_64(); - nx_thread =3D vhost_task_create(kvm_nx_huge_page_recovery_worker, - kvm_nx_huge_page_recovery_worker_kill, + nx_thread =3D vhost_task_create(kvm_nx_huge_page_recovery_worker, NULL, kvm, "kvm-nx-lpage-recovery"); =20 if (IS_ERR(nx_thread)) --=20 2.51.0.261.g7ce5a0a67e-goog