linux-kernel - Re: [PATCHv6 1/4] x86/tdx: Introduce wrappers to read and write TD metadata

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <015695ef-d05e-4efc-8bba-03d4251db80c@suse.com>
Date: Wed, 28 Aug 2024 17:28:18 +0300
From: Nikolay Borisov <nik.borisov@...e.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>
Cc: linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org,
 Kai Huang <kai.huang@...el.com>,
 Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>,
 stable@...r.kernel.org
Subject: Re: [PATCHv6 1/4] x86/tdx: Introduce wrappers to read and write TD
 metadata

On 28.08.24 г. 12:35 ч., Kirill A. Shutemov wrote:
> The TDG_VM_WR TDCALL is used to ask the TDX module to change some
> TD-specific VM configuration. There is currently only one user in the
> kernel of this TDCALL leaf.  More will be added shortly.
> 
> Refactor to make way for more users of TDG_VM_WR who will need to modify
> other TD configuration values.
> 
> Add a wrapper for the TDG_VM_RD TDCALL that requests TD-specific
> metadata from the TDX module. There are currently no users for
> TDG_VM_RD. Mark it as __maybe_unused until the first user appears.
> 
> This is preparation for enumeration and enabling optional TD features.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Reviewed-by: Kai Huang <kai.huang@...el.com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
> Cc: stable@...r.kernel.org

Reviewed-by: Nikolay Borisov <nik.borisov@...e.com>