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Message-ID: <20171114072157.f4knhqouiflj5drr@gmail.com>
Date: Tue, 14 Nov 2017 08:21:57 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...e.de>,
Andy Lutomirski <luto@...nel.org>,
Tony Luck <tony.luck@...el.com>,
Paolo Bonzini <pbonzini@...hat.com>,
"Ravi V. Shankar" <ravi.v.shankar@...el.com>, x86@...nel.org,
ricardo.neri@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v2 3/4] x86/umip: Identify the str and sldt
instructions
* Ricardo Neri <ricardo.neri-calderon@...ux.intel.com> wrote:
> The instructions STR and SLDT are not emulated in any case. Thus, it made
> sense to not implement functionality to identify them. However, a
> subsequent commit will introduce functionality to warn about the use of
> all the instructions that UMIP protect, not only those that are emulated.
> A first step for that is the ability to identify them.
>
> Plus, now that STR and SLDT are identified, we need to explicitly avoid
> their emulation (i.e., not rely on unsuccessful identification). Group
> togehter all the cases that we do not want to emulate: STR, SLDT and user
> long mode processes.
>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: H. Peter Anvin <hpa@...or.com>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: Ravi V. Shankar <ravi.v.shankar@...el.com>
> Cc: x86@...nel.org
> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Sigh, the _title_ still refers to 'str'...
I'll fix it up, no need to resend, but this lack of attention to details is
seriously sad.
Thanks,
Ingo
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