linux-kernel - Re: [PATCH] x86/kvm/tdx: Save %rbp in TDX_MODULE

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Message-ID: <4b3adb59-50ea-419e-ad02-e19e8ca20dee@intel.com>
Date: Fri, 17 May 2024 09:48:39 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Juergen Gross <jgross@...e.com>,
 "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org, linux-coco@...ts.linux.dev,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86/kvm/tdx: Save %rbp in TDX_MODULE_CALL

On 5/17/24 08:58, Juergen Gross wrote:
> On 17.05.24 17:52, Dave Hansen wrote:
..
>> Once we have the specific TDX module version, we can go ask the folks
>> who write it if there were any RBP clobbering bugs.
> 
> Okay, how to get the TDX module version?

You need something like this:

> https://lore.kernel.org/all/20231012134136.1310650-1-yi.sun@intel.com/

.. and yeah, this needs to be upstream.