Re: [tip:x86/asm] x86/umip: Add emulation code for UMIP instructions
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- Subject: Re: [tip:x86/asm] x86/umip: Add emulation code for UMIP instructions
- From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 8 Nov 2017 08:57:42 -0800
- Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>, Peter Anvin <hpa@xxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>, Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Brian Gerst <brgerst@xxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, "Ravi V. Shankar" <ravi.v.shankar@xxxxxxxxx>, ricardo.neri-calderon@xxxxxxxxxxxxxxx, Chris Metcalf <cmetcalf@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Andrew Lutomirski <luto@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, ray.huang@xxxxxxx, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Chen Yucong <slaoub@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Jiri Slaby <jslaby@xxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "linux-tip-commits@xxxxxxxxxxxxxxx" <linux-tip-commits@xxxxxxxxxxxxxxx>
- In-reply-to: <3cdde8ac-500c-ddad-5ea5-a733e2c98d84@redhat.com>
- References: <1509935277-22138-8-git-send-email-ricardo.neri-calderon@linux.intel.com> <tip-1e5db223696afa55e6a038fac638f759e1fdcc01@git.kernel.org> <ca980b88-a668-29cc-3f5a-506088473282@redhat.com> <CA+55aFyzb5D6DfM_1mxcMbuYOaxZWFxqfv7WZS6zdkqnN7+p0A@mail.gmail.com> <3cdde8ac-500c-ddad-5ea5-a733e2c98d84@redhat.com>
On Wed, Nov 8, 2017 at 8:53 AM, Denys Vlasenko <dvlasenk@xxxxxxxxxx> wrote:
> We can postpone enabling UMIP by default by a year or so.
> By this time, new Wine will be on majority of users' machines.
So you are suggesting we run unnecessarily insecure, only in order to
not do the emulation that we already have the code for and that the
patch implements?
Why?
Because quite frankly, that sounds f*cking retarded.
Linus
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