From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 C5FD02BD5AD for ; Wed, 29 Oct 2025 13:58:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761746309; cv=none; b=trj5jdAcPZvCpH598sZgk5pi/btLLoM1zjJ3zLWcUAjeVxxhGK3ehP5TFinvZnaLzVK3zQan+7s/3wUdp9OX6wmac0tpe71OdvlJNnJhX+G2tjmJ8Jl8sea8vdW3lrEOD7HzPncZ+MzUhivMhtBtxfw8vnV1+MySk+2YhGwBYFI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761746309; c=relaxed/simple; bh=R/lq99j+ak5lsZi4yIRf6mAh+n/OLHtTnfr7HlraIYY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=VSFjPCjsZzjuNq5G89fffulFOl1AZ65vYb8N7mbaYWIjJoShna1vZzst/V0yVRb7IrXX8FkDH0QgVRri1oEmrpRDKEoep6Ld+epRP8OEFCA8XFZtAVYiMVG/vTO3v0FBBBI/zn5YzCv/n/BRLWlOr0XbGj5usLwz7ISmYWe/crk= 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=drVzyY8o; arc=none smtp.client-ip=209.85.216.74 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="drVzyY8o" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-3403e994649so1170819a91.3 for ; Wed, 29 Oct 2025 06:58:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761746307; x=1762351107; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=R/lq99j+ak5lsZi4yIRf6mAh+n/OLHtTnfr7HlraIYY=; b=drVzyY8olY+FNvS+4XWTwFBZTxfSUV6+VebOANp1aZMZefxUfl+Iv5tG1sh92/HQ/u 21Kh+NrHe9AOJHeGHmvhg6dvNBm+C/S/FKbt03Z9tCMf9AFm4KhhPxbs0KlG6gT1zGsg xhB8gbh4g6PkIxhIGtPmbOZAqH4L4RxI8MyzGlmutNddyww/HKcsgr9ibfDT5LGDAV1F 4AfEKExxue1LiK5MTp8spWXxfbNZfoNmCO1DZmwxA5ERENCfHEx2nwa+iQCSohQf9yMY UEyMOszx30uYes0tp87ZSJEINHwZbRNakd1UWHJTCnmKxZEleQcQv4g8EyDsXD7f4TN8 YBdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761746307; x=1762351107; h=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; bh=R/lq99j+ak5lsZi4yIRf6mAh+n/OLHtTnfr7HlraIYY=; b=edTeUsEeTQv9hjESQcKCoTUm9w7Gh4EhKK6l5XMsuNKUpGb4ZRdX7TSHbQnXMSicdg OGP0TvNvCLx8BErzm9bu8mwzD7LPM5R1T8IZTpKe31kuN04C9+tpaNhkmkgsQ+yujjoP zwT2EaqeFtdZg2R9usSli5umTDTQg22ALvQ/h/NeBK/K7lEbrcFF3ZmYo1zHt7dHGrKC AsYofeyRivR//OeolUwJrzQShQJEHGlsRaAO120qpk53cMrZnEo7gb+LHpmSb/eTNuUK 5w0RjYWuBtvhRfplYrYQOv7BHcnKNbLicpLifS/irck6y7bd1QKQCt9HvEsV1ZREwJqT EqXQ== X-Forwarded-Encrypted: i=1; AJvYcCVv4izp4bDHze3jtA2XFqZyFXLBHpQC0U+FHBAORCMmbsa/BgfQ7u12Vjhe3H4ZlyOcNLQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yw7P04iY4qMHy1G65IJfEbKgJbM1SmbP8hz8DF9LqPdOhjP3Pvf OuZAroVOD9fHjYbm4HtsgmjjTYI/j2a6K+7TT94y442Ont8yo2btVjnGyUJBSWuTivtEF5qHG3x 3RIEJdw== X-Google-Smtp-Source: AGHT+IE4ksY6pWur34UQ3eqUueNMRdeUrWX1+T1bYF+4IbiUvAKUN7lFBP4zbkvFlAcsEQ+loPHbjQhy8Xo= X-Received: from pjrv13.prod.google.com ([2002:a17:90a:bb8d:b0:33b:51fe:1a81]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1f8e:b0:33e:1acc:1799 with SMTP id 98e67ed59e1d1-3403a26606bmr3695621a91.14.1761746307070; Wed, 29 Oct 2025 06:58:27 -0700 (PDT) Date: Wed, 29 Oct 2025 06:58:25 -0700 In-Reply-To: <20251029055753.5742-1-nikunj@amd.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251029055753.5742-1-nikunj@amd.com> Message-ID: Subject: Re: [PATCH] KVM: SVM: Add module parameter to control SEV-SNP Secure TSC feature From: Sean Christopherson To: Nikunj A Dadhania Cc: pbonzini@redhat.com, kvm@vger.kernel.org, thomas.lendacky@amd.com, santosh.shukla@amd.com Content-Type: text/plain; charset="us-ascii" On Wed, Oct 29, 2025, Nikunj A Dadhania wrote: > Add a module parameter secure_tsc to allow control of the SEV-SNP Secure > TSC feature at module load time, providing administrators with the ability > to disable Secure TSC support even when the hardware and kernel support it. Why?