From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) (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 D0755155757 for ; Wed, 30 Sep 2026 00:11:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790727100; cv=none; b=NkvFJpiYV1drKcC9i3xBSXJAUltng4QcZM8u1M/Oi0s77FZpQQb7S08T8vyjIxv8KIrzBwf49Lpu8/65fS3Busx62U7XT49l+ITB6l76mV/zw0QYdKHaaC53cGmGHDHahr+yIdJfBB02hj5w9dYHTr5muiyoK8+UbukemUEG9Lg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790727100; c=relaxed/simple; bh=A7IRWuPMCa9/K6ayW7GZntUsPEZAJO7D1Iq8/qQOpAw=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=mNR1srnI1ZztKVrO/Bvjb1uLXFI/O67Z+qJ85CVg6SbJxPUzTQniajD6Rag87El/bAfX4tgjFSGauSGOlPeiUwAU+c6e3Uaf+IV+FLV8GVOMsfbR3SSGOWSgO7gmxO052nT0wg5fYmpAUb4VTfSKKo0vdvib0Cx763bTsIyn15k= 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=kZVzMVzj; arc=none smtp.client-ip=209.85.216.71 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="kZVzMVzj" Received: by mail-pj1-f71.google.com with SMTP id 98e67ed59e1d1-39b6416441eso8180049a91.1 for ; Tue, 29 Sep 2026 17:11:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790727098; x=1791331898; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:reply-to:from:to:cc:subject:date:message-id :reply-to:content-type; bh=jH3B8GV0tS9VtL5MIP+jFUJJXxCC4SF+dpbD+h0RZUM=; b=kZVzMVzjFdLJdtOCRKU/JAQJ0M/wwktoLGDeQIR15WParOIVG+ro3AlRwihjNQZRzk lH8Y3JrRBD11GWNeetH2RpmH5LxpHriUcWmq9KA2tPMGr6E2OgkhZZskLosezTmE1csW Ww7llXb9J5SEpXNJW+OAfHNic9PKCiwYVIiTwv48vzIqIP2KgUhkPC47eAKeZWK8WYR1 yjJYgzdR8cXIdrNO8kEdDJPvbvhvQ3rg9Y/x4LzebcyI52bIw3b4dFf3utMQopMnURLN WYGsVP64AqxkOzJh+Y08AmNaKuUohxRj+6cvHVXiS0ySueUW3GZ7w7xNLPeh5R+8ZRN7 qiyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790727098; x=1791331898; h=content-type: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:content-type; bh=jH3B8GV0tS9VtL5MIP+jFUJJXxCC4SF+dpbD+h0RZUM=; b=gZLp49VxQPA2UNO+LnCbmlOY1wpj2cdmwg3Bt51Mtg7ao1PZe/jxytNBFu4I2NChwI Az9yVX97SAqAZkxf3/jXZpOIJfnXGpHaEObazLQ7QciUNwaz0qjTAqJXyKnoZYYrQ7TT 3DDOaw+3wQQv2klWHJehx1J09zTViB7n+qwAVjlBwBSFraa5yN0kzK5tn5PZFAQVVZyy /oLOWDtF40oe9NiQr1RD/wDagi6RvZcYgIYDTuXyceR+NrWiZUvCJg3RRC8LuXT6QkPz 43Gk0c1KbEveuK9bS/VYAX5Pg9oJCeCJkawhhnZaWIghtBioJg9SszYCTnh/zxn5WKE/ 5jyA== X-Forwarded-Encrypted: i=1; AKwUvBxcplVk1nsqSZNhhl+km0KHR3Y/1rDhf+zt+zdZjZWIjss+3xjfLM4JaO0f052JGdbyvQ0=@vger.kernel.org X-Gm-Message-State: AFq9FYLCzdsyNCzW//m28U6YOIJK23s6/u/T3CiQESk0XRMx0lORM3GT Y5ZcDcMqFYUQozvf4JmDoY2ivOM3VYsv6fIpkgl5TdL6H08/lMbsnO/qnSf49UvPcUQNOemC3+q E0on5nA== X-Received: from pgdu24.prod.google.com ([2002:a05:6a02:2f58:b0:cc7:d188:3fa]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90a:ec8e:b0:3a4:ba95:5731 with SMTP id 98e67ed59e1d1-3a4bfe553d6mr786254a91.36.1790727093138; Tue, 29 Sep 2026 17:11:33 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 29 Sep 2026 17:11:27 -0700 In-Reply-To: <20260930001127.3170009-1-seanjc@google.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260930001127.3170009-1-seanjc@google.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog Message-ID: <20260930001127.3170009-4-seanjc@google.com> Subject: [PATCH v2 3/3] KVM: TDX: Ratelimit the "EPT Violation on pending acceptance page" warning From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , Kiryl Shutsemau , Rick Edgecombe Cc: Dave Hansen , kvm@vger.kernel.org, x86@kernel.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, James Houghton , Xiaoyao Li , Yan Zhao , Binbin Wu , Ackerley Tng , Vishal Annapurve , Sashiko Bot Content-Type: text/plain; charset="UTF-8" Ratelimit TDX's kernel logging when a guest accesses an unaccepted page and has opted to disable EPT Violation #VEs for unaccepted accesses, as the pr_warn() is trivial for a misbehaving userspace to trigger. Fixes: e6a85781f783 ("KVM: TDX: Detect unexpected SEPT violations due to pending SPTEs") Cc: stable@vger.kernel.org Reported-by: Sashiko Bot Closes: https://lore.kernel.org/all/20260923164348.2DB2D1F000FF@smtp.kernel.org Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/tdx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index e3723f1222fc..4cac43299851 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1937,8 +1937,8 @@ static int tdx_handle_ept_violation(struct kvm_vcpu *vcpu) if (vt_is_tdx_private_gpa(vcpu->kvm, gpa)) { if (tdx_is_sept_violation_unexpected_pending(vcpu)) { - pr_warn("Guest access before accepting 0x%llx on vCPU %d\n", - gpa, vcpu->vcpu_id); + pr_warn_ratelimited("Guest access before accepting 0x%llx on vCPU %d\n", + gpa, vcpu->vcpu_id); kvm_prepare_shutdown_exit(vcpu); return 0; } -- 2.56.0.rc1.315.gc6ed9934b7-goog