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Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu , Haitao Huang Subject: Re: [PATCH v21 05/26] x86/fpu/xstate: Introduce CET MSR and XSAVES supervisor states Message-ID: <20210224153457.GC20344@zn.tnic> References: <20210217222730.15819-1-yu-cheng.yu@intel.com> <20210217222730.15819-6-yu-cheng.yu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210217222730.15819-6-yu-cheng.yu@intel.com> X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: CAB96C0007C5 X-Stat-Signature: h3yguhefz81ha1ka9qmek5yuczpnt9ge Received-SPF: none (alien8.de>: No applicable sender policy available) receiver=imf22; identity=mailfrom; envelope-from=""; helo=mail.skyhub.de; client-ip=5.9.137.197 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614180897-284268 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Feb 17, 2021 at 02:27:09PM -0800, Yu-cheng Yu wrote: > diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h > index 546d6ecf0a35..fae6b3ea1f6d 100644 > --- a/arch/x86/include/asm/msr-index.h > +++ b/arch/x86/include/asm/msr-index.h > @@ -933,4 +933,23 @@ > #define MSR_VM_IGNNE 0xc0010115 > #define MSR_VM_HSAVE_PA 0xc0010117 > > +/* Control-flow Enforcement Technology MSRs */ > +#define MSR_IA32_U_CET 0x6a0 /* user mode cet setting */ > +#define MSR_IA32_S_CET 0x6a2 /* kernel mode cet setting */ > +#define CET_SHSTK_EN BIT_ULL(0) > +#define CET_WRSS_EN BIT_ULL(1) > +#define CET_ENDBR_EN BIT_ULL(2) > +#define CET_LEG_IW_EN BIT_ULL(3) > +#define CET_NO_TRACK_EN BIT_ULL(4) > +#define CET_SUPPRESS_DISABLE BIT_ULL(5) > +#define CET_RESERVED (BIT_ULL(6) | BIT_ULL(7) | BIT_ULL(8) | BIT_ULL(9)) > +#define CET_SUPPRESS BIT_ULL(10) > +#define CET_WAIT_ENDBR BIT_ULL(11) > + > +#define MSR_IA32_PL0_SSP 0x6a4 /* kernel shadow stack pointer */ > +#define MSR_IA32_PL1_SSP 0x6a5 /* ring-1 shadow stack pointer */ > +#define MSR_IA32_PL2_SSP 0x6a6 /* ring-2 shadow stack pointer */ > +#define MSR_IA32_PL3_SSP 0x6a7 /* user shadow stack pointer */ > +#define MSR_IA32_INT_SSP_TAB 0x6a8 /* exception shadow stack table */ When you look at the formatting in that file and the MSR numbers in it, what stops you from formatting your addition the same way? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette