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Date:   Thu, 8 Jun 2023 08:16:27 +0200
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Subject: Re: [PATCH 3/3] x86: Disable running 32bit processes if ia32_disabled
 is passed
To:     Thomas Gleixner <tglx@linutronix.de>,
        Andrew Cooper <andrew.cooper3@citrix.com>,
        Nikolay Borisov <nik.borisov@suse.com>, x86@kernel.org
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From:   Jiri Slaby <jslaby@suse.cz>
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On 08. 06. 23, 2:25, Thomas Gleixner wrote:
> I really wish that we could disable syscall32 reliably on AMD and make
> it raise #UD as it does on Intal.

Sorry, I am likely missing something, but why is not #GP enough when we 
set CSTAR = 0? It's of course not as good as Intel's *defined* #UD, but 
why is not the above sufficient/reliable?

thanks,
-- 
js
suse labs