From: Nikolay Borisov <nik.borisov@suse.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org,
Kai Huang <kai.huang@intel.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
stable@vger.kernel.org
Subject: Re: [PATCHv6 1/4] x86/tdx: Introduce wrappers to read and write TD metadata
Date: Wed, 28 Aug 2024 17:28:18 +0300 [thread overview]
Message-ID: <015695ef-d05e-4efc-8bba-03d4251db80c@suse.com> (raw)
In-Reply-To: <20240828093505.2359947-2-kirill.shutemov@linux.intel.com>
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@linux.intel.com>
> Reviewed-by: Kai Huang <kai.huang@intel.com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> Cc: stable@vger.kernel.org
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
next prev parent reply other threads:[~2024-08-28 14:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-28 9:35 [PATCHv6 0/4] x86/tdx: Adjust TD settings on boot Kirill A. Shutemov
2024-08-28 9:35 ` [PATCHv6 1/4] x86/tdx: Introduce wrappers to read and write TD metadata Kirill A. Shutemov
2024-08-28 14:28 ` Nikolay Borisov [this message]
2024-08-28 9:35 ` [PATCHv6 2/4] x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup() Kirill A. Shutemov
2024-08-28 13:53 ` Nikolay Borisov
2024-09-09 11:24 ` Kirill A. Shutemov
2024-08-28 9:35 ` [PATCHv6 3/4] x86/tdx: Dynamically disable SEPT violations from causing #VEs Kirill A. Shutemov
2024-08-28 14:27 ` Nikolay Borisov
2024-09-09 11:29 ` Kirill A. Shutemov
2024-08-28 9:35 ` [PATCHv6 4/4] x86/tdx: Enable CPU topology enumeration Kirill A. Shutemov
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