From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (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 163BD218845 for ; Thu, 9 Jul 2026 13:32:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783603936; cv=none; b=SnaJHc4/xWbuMcEZ6KTcWYq0pxvXswTpluayYZ5BwOKlp3oYM6HUo4EoPw/frpRLqNRZEHE9WEOlriqXd4bzjXZPIkahJxx1WVUxWcszbCwOZp1Hg1U0a3BvbhwE8ompP9SOBhs3Dn/8CBkzEk61WUUK7OP/9RJyNBKDDZixKoE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783603936; c=relaxed/simple; bh=ZTuzgcPbUyZN2TS7s3bSSQhZ1tSs+TllIC7bXaAEUAw=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=rC8mV2VikLYUZXnubzDaMXzcwCEamxWLJTyLGVfVztLV4FDYDorY83BalJVoK7X3G2aJ3zJrHw7/xpVzP+2DHlbS5brSYwUtuptUZ3obA8vUNryaP+PnXKXtQxxr2y87C2+OxgvdgKsgaw3825RFhA6t0wyG1EsfW+wQ5GLm66I= 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=bxmKl+Wr; arc=none smtp.client-ip=209.85.215.202 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--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="bxmKl+Wr" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-c860544c077so3939637a12.3 for ; Thu, 09 Jul 2026 06:32:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1783603934; x=1784208734; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=RdKuPRK/5J+rU/jhEzum6xrxN8s4WcbjUAqcp7f6fIg=; b=bxmKl+WrGQJBnu8iWzmrEzzOnrYML64Us4oK5qwAFuRn4E8qYgDTiJsKBcRKoCaHne tknqci7hHDWeZptxYJBLxrcv0chiCPVKOPBmgl+swoXJOOGr/4pA/JIrp5Yd6N/QbP1n j7pw3v5igKUt7/zf3+/oLv9svPErtMsylxLTujoF82NCGFzGUu+DOYjrftnwOdSpy+gR F9qXFydd6YwAhhFQu47V3LrkJkEvZNXhyCrZWuw7Ou9XVGbilvg2NHZ89llnWtglEN5W 500/xPZgX6sV+Yd932f4JyRM/5GZp7ICDmkhvXinG/JiIjtd7YhP1yO5FcDmbe8ufsQd rPXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783603934; x=1784208734; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=RdKuPRK/5J+rU/jhEzum6xrxN8s4WcbjUAqcp7f6fIg=; b=Nmf4lOUhRakltvVWUggQHrPIPiXWi1+tqLU6Z1XyfJjFZ203CycPbpRVzzgIg9F4XE P6aMOFIO4iDiNxrn11/ff4sPatbCRx0ec/gJQKJCj0yPhXs355pVUggj4IZeYiMEwv1O YWTyVF2mtwE9kBQPSQ3SFYxmI+I0/LjFaIv7owRYgK93PkIxcz36VyMQFF5Pq4mmD4OC T2PiJCoDnJjH835gRoqoCX8rXc4G9OJxUnZXud3EV9HuCeJeK8oaKz+1jI5JA4HCFAth XZhraOk0oUSOaR1rYa5deBYqgRR9xpXHk6NF+Zc9xxr1P2oZ6b1bvXECBXT7+sLKGuLz DOww== X-Forwarded-Encrypted: i=1; AHgh+RpY+OYEYYhsnAaKUbfMXPfHmhprglwXColOW4pAP2OxwdbQNq1P7/jUusJU0l1H9IRBolw=@vger.kernel.org X-Gm-Message-State: AOJu0YxegD5NAFQ18yDRDZf2pHFh6OGkja5pOggpMqzUZzYEBB1qhXzT aDE1IyTgXUJKKP4DFTO8DkL1e9QC4c35RMaSs8l91IMRiOHpk5Qj7+FMrcVIrX92XHKB5Hrd6Ey C3EVazw== X-Received: from pfbgl5.prod.google.com ([2002:a05:6a00:84c5:b0:847:7765:a4c3]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:1251:b0:845:d284:9e11 with SMTP id d2e1a72fcca58-848438c5228mr7084292b3a.56.1783603933946; Thu, 09 Jul 2026 06:32:13 -0700 (PDT) Date: Thu, 9 Jul 2026 06:32:12 -0700 In-Reply-To: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260708134101.1073574-1-jerry.lyu@open-hieco.net> Message-ID: Subject: Re: [PATCH] KVM: SVM: Do not warn on IGNNE MSR write From: Sean Christopherson To: Jerry Lyu Cc: pbonzini@redhat.com, joerg.roedel@amd.com, kvm@vger.kernel.org Content-Type: text/plain; charset="us-ascii" On Thu, Jul 09, 2026, Jerry Lyu wrote: > > That said, KVM does effectively support the case where #IGGNE is not asserted, so > > I think we can simply do this to avoid the useless logging? > > Yeah, that can work for the current case. However, if another guest > initializes the IGNNE MSR with different value meanwhile never enables > the IGNNE emulation, kvm will again print uselsss logging. If you find the logging useless, just disable that class of logging entirely by setting report_ignored_msrs=false, either when loading kvm.ko or by writing /sys/module/kvm/parameters/report_ignored_msrs (it's writable by root even when KVM is loaded).