From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BEFF331230; Mon, 2 Mar 2026 08:20:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772439651; cv=none; b=C3a9qEkBN5bg3AOcHGG6efZ21Kzopv38VZty4SE3HGLzdNEZ2iRNR7WnRkwKuGJfZaQpND8qhnwTO0HFkJuDxWu+n8WwALvuTU4AS7b6+YjERl2bDQFRvubQ/UEF/PlZo2FHt6FsVZrOHfS0JyYBwDlGoGPyF0NlT1iLCfYocN0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772439651; c=relaxed/simple; bh=fDYXD4VD2yR75zYY6OOj5F+Auon5DcJhD3j5sfQ3CC8=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=WWzrNlVyjmjad3SpSXVMve/c0+/j1PD4tN1HHxcKdIHIdAGPPpXjA9X5JnHQ6HC8SIlb/0NwUpvXk/rt5f8NQbDf3ZaXTH0YG2bksU3vbWxHTjNqSWbHCLm9dUa53ozsEYO9Rf8h8mUKs/TMRr4d4yl/zhdIM1AYpLR0X8sV0m4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JSal0vMu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JSal0vMu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86C67C19423; Mon, 2 Mar 2026 08:20:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772439651; bh=fDYXD4VD2yR75zYY6OOj5F+Auon5DcJhD3j5sfQ3CC8=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=JSal0vMubrF1Q4MhTYeux4kULZj3+Mq5ius6q9I6mT7IHACzC5sY37v0FNyW6uEvK f300PjEl1mdnqpBvh7azNB0OhNz866lFp+miFoEGWyQTtpWmzNVI+iSDTx5hEUMRgB +/YRTqlcoyfWCj7gEiDPCLD3ODRfIAQ1jqBaTrdE/MYQHfk/ijBBT3YIjc9xBXymU8 JUsm2LRMn1+VgTIX3omzsLRfVfBF7NFpOCePTWRNge+/QFZfqiubOAhaB+0TKbETbE uThjsB9CBdWgzhc+WrLMq7RPupdfVlUO7cQppmCx+uX+fBrVYozSgpedmCaCg7TcJu braju7VbSLsQw== X-Mailer: emacs 30.2 (via feedmail 11-beta-1 I) From: Aneesh Kumar K.V To: Alexey Kardashevskiy , x86@kernel.org Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-pci@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Sean Christopherson , Paolo Bonzini , Andy Lutomirski , Peter Zijlstra , Bjorn Helgaas , Dan Williams , Marek Szyprowski , Robin Murphy , Andrew Morton , Catalin Marinas , Michael Ellerman , Mike Rapoport , Tom Lendacky , Ard Biesheuvel , Neeraj Upadhyay , Ashish Kalra , Stefano Garzarella , Melody Wang , Seongman Lee , Joerg Roedel , Nikunj A Dadhania , Michael Roth , Suravee Suthikulpanit , Andi Kleen , Kuppuswamy Sathyanarayanan , Tony Luck , David Woodhouse , Greg Kroah-Hartman , Denis Efremov , Geliang Tang , Piotr Gregor , "Michael S. Tsirkin" , Alex Williamson , Arnd Bergmann , Jesse Barnes , Jacob Pan , Yinghai Lu , Kevin Brodsky , Jonathan Cameron , Xu Yilun , Herbert Xu , Kim Phillips , Konrad Rzeszutek Wilk , Stefano Stabellini , Claire Chang , linux-coco@lists.linux.dev, iommu@lists.linux.dev, Alexey Kardashevskiy Subject: Re: [PATCH kernel 9/9] pci: Allow encrypted MMIO mapping via sysfs In-Reply-To: <20260225053806.3311234-10-aik@amd.com> References: <20260225053806.3311234-1-aik@amd.com> <20260225053806.3311234-10-aik@amd.com> Date: Mon, 02 Mar 2026 13:50:32 +0530 Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Alexey Kardashevskiy writes: > Add another resource#d_enc to allow mapping MMIO as > an encrypted/private region. > > Unlike resourceN_wc, the node is added always as ability to > map MMIO as private depends on negotiation with the TSM which > happens quite late. Why is this needed? Is this for a specific tool? -aneesh