Re: [RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET

[RFC PATCH v2 00/27] Control Flow Enforcement (CET) · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 13/27] mm: Handle shadow stack page fault · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 13/27] mm: Handle shadow stack page fault · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 13/27] mm: Handle shadow stack page fault · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 13/27] mm: Handle shadow stack page fault · Yu-cheng Yu <hidden> · 2018-08-14
[RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-20
Re: [RFC PATCH v2 14/27] mm: Handle THP/HugeTLB shadow stack page fault · Yu-cheng Yu <hidden> · 2018-07-20
[RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-12
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-12
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <hidden> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Andy Lutomirski <luto@amacapital.net> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <hidden> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <hidden> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Andy Lutomirski <luto@amacapital.net> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-13
Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction · Yu-cheng Yu <hidden> · 2018-07-13
[RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-11
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-11
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-11
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Yu-cheng Yu <hidden> · 2018-07-13
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-13
Re: [RFC PATCH v2 22/27] x86/cet/ibt: User-mode indirect branch tracking support · Jann Horn <jannh@google.com> · 2018-07-11
[RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET · Florian Weimer <hidden> · 2018-07-11
Re: [RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET · Jann Horn <jannh@google.com> · 2018-07-11
Re: [RFC PATCH v2 27/27] x86/cet: Add arch_prctl functions for CET · Yu-cheng Yu <hidden> · 2018-07-11
[RFC PATCH v2 26/27] x86/cet/shstk: Handle thread shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Ingo Molnar <mingo@kernel.org> · 2018-07-11
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Ingo Molnar <mingo@kernel.org> · 2018-07-12
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Yu-cheng Yu <hidden> · 2018-07-12
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Thomas Gleixner <hidden> · 2018-07-12
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Yu-cheng Yu <hidden> · 2018-07-13
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Pavel Machek <hidden> · 2018-07-13
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Ingo Molnar <mingo@kernel.org> · 2018-07-13
Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET · Pavel Machek <hidden> · 2018-07-14
[RFC PATCH v2 23/27] mm/mmap: Add IBT bitmap size to address space limit check · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 23/27] mm/mmap: Add IBT bitmap size to address space limit check · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 23/27] mm/mmap: Add IBT bitmap size to address space limit check · Yu-cheng Yu <hidden> · 2018-07-11
[RFC PATCH v2 24/27] x86: Insert endbr32/endbr64 to vDSO · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 19/27] x86/cet/shstk: Signal handling for shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 20/27] x86/cet/shstk: ELF header parsing of CET · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 20/27] x86/cet/shstk: ELF header parsing of CET · Florian Weimer <hidden> · 2018-07-11
Re: [RFC PATCH v2 20/27] x86/cet/shstk: ELF header parsing of CET · Jann Horn <jannh@google.com> · 2018-07-11
Re: [RFC PATCH v2 20/27] x86/cet/shstk: ELF header parsing of CET · Yu-cheng Yu <hidden> · 2018-07-11
[RFC PATCH v2 21/27] x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 08/27] mm: Introduce VM_SHSTK for shadow stack memory · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 08/27] mm: Introduce VM_SHSTK for shadow stack memory · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 08/27] mm: Introduce VM_SHSTK for shadow stack memory · Yu-cheng Yu <hidden> · 2018-07-11
[RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-13
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-17
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-17
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-17
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-18
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-18
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-18
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-19
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-19
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-19
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 16/27] mm: Modify can_follow_write_pte/pmd for shadow stack · Yu-cheng Yu <hidden> · 2018-07-17
[RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Jann Horn <jannh@google.com> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Andy Lutomirski <luto@amacapital.net> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Jann Horn <jannh@google.com> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Andy Lutomirski <luto@amacapital.net> · 2018-07-11
Re: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support · Yu-cheng Yu <hidden> · 2018-07-13
[RFC PATCH v2 11/27] x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 11/27] x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 11/27] x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW · Nadav Amit <hidden> · 2018-07-10
Re: [RFC PATCH v2 11/27] x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 11/27] x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
[RFC PATCH v2 15/27] mm/mprotect: Prevent mprotect from changing shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 15/27] mm/mprotect: Prevent mprotect from changing shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 15/27] mm/mprotect: Prevent mprotect from changing shadow stack · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 15/27] mm/mprotect: Prevent mprotect from changing shadow stack · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 15/27] mm/mprotect: Prevent mprotect from changing shadow stack · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-11
[RFC PATCH v2 12/27] x86/mm: Shadow stack page fault error checking · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 12/27] x86/mm: Shadow stack page fault error checking · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
Re: [RFC PATCH v2 12/27] x86/mm: Shadow stack page fault error checking · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 12/27] x86/mm: Shadow stack page fault error checking · Dave Hansen <dave.hansen@linux.intel.com> · 2018-07-10
[RFC PATCH v2 05/27] Documentation/x86: Add CET description · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description · Pavel Machek <hidden> · 2018-07-11
Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description · Yu-cheng Yu <hidden> · 2018-07-11
Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description · Florian Weimer <hidden> · 2018-07-11
Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description · H.J. Lu <hidden> · 2018-07-11
Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description · Yu-cheng Yu <hidden> · 2018-07-11
[RFC PATCH v2 07/27] x86/cet/shstk: Add Kconfig option for user-mode shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 06/27] x86/cet: Control protection exception handler · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 10/27] x86/mm: Introduce _PAGE_DIRTY_SW · Yu-cheng Yu <hidden> · 2018-07-10
Re: [RFC PATCH v2 10/27] x86/mm: Introduce _PAGE_DIRTY_SW · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
Re: [RFC PATCH v2 10/27] x86/mm: Introduce _PAGE_DIRTY_SW · Peter Zijlstra <peterz@infradead.org> · 2018-07-11
[RFC PATCH v2 03/27] x86/fpu/xstate: Enable XSAVES system states · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 02/27] x86/fpu/xstate: Change some names to separate XSAVES system and user states · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 04/27] x86/fpu/xstate: Add XSAVES system states for shadow stack · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 09/27] x86/mm: Change _PAGE_DIRTY to _PAGE_DIRTY_HW · Yu-cheng Yu <hidden> · 2018-07-10
[RFC PATCH v2 01/27] x86/cpufeatures: Add CPUIDs for Control-flow Enforcement Technology (CET) · Yu-cheng Yu <hidden> · 2018-07-10

From: Yu-cheng Yu <hidden>
Date: 2018-07-11 21:06:19
Also in: linux-api, linux-doc, linux-mm, lkml

On Wed, 2018-07-11 at 14:19 +0200, Florian Weimer wrote:

On 07/11/2018 12:26 AM, Yu-cheng Yu wrote:

quoted

arch_prctl(ARCH_CET_DISABLE, unsigned long features)
     Disable SHSTK and/or IBT specified in 'features'.  Return
-EPERM
     if CET is locked out.

arch_prctl(ARCH_CET_LOCK)
     Lock out CET feature.

Isn't it a “lock in” rather than a “lock out”?

Yes, that makes more sense.  I will fix it.

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