1. 17 4月, 2018 1 次提交
    • I
      tools/headers: Synchronize kernel ABI headers, v4.17-rc1 · e2f73a18
      Ingo Molnar 提交于
      Sync the following tooling headers with the latest kernel version:
      
        tools/arch/arm/include/uapi/asm/kvm.h
          - New ABI: KVM_REG_ARM_*
      
        tools/arch/x86/include/asm/required-features.h
          - Removal of NEED_LA57 dependency
      
        tools/arch/x86/include/uapi/asm/kvm.h
          - New KVM ABI: KVM_SYNC_X86_*
      
        tools/include/uapi/asm-generic/mman-common.h
          - New ABI: MAP_FIXED_NOREPLACE flag
      
        tools/include/uapi/linux/bpf.h
          - New ABI: BPF_F_SEQ_NUMBER functions
      
        tools/include/uapi/linux/if_link.h
          - New ABI: IFLA tun and rmnet support
      
        tools/include/uapi/linux/kvm.h
          - New ABI: hyperv eventfd and CONN_ID_MASK support plus header cleanups
      
        tools/include/uapi/sound/asound.h
          - New ABI: SNDRV_PCM_FORMAT_FIRST PCM format specifier
      
        tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
          - The x86 system call table description changed due to the ptregs changes and the renames, in:
      
      	d5a00528: syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
      	5ac9efa3: syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
      	ebeb8c82: syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32
      
      Also fix the x86 syscall table warning:
      
        -Warning: Kernel ABI header at 'tools/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
        +Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
      
      None of these changes impact existing tooling code, so we only have to copy the kernel version.
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Potapenko <glider@google.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
      Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brian Robbins <brianrob@microsoft.com>
      Cc: Clark Williams <williams@redhat.com>
      Cc: Daniel Borkmann <daniel@iogearbox.net>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Dmitriy Vyukov <dvyukov@google.com> <dvyukov@google.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
      Cc: Jesper Dangaard Brouer <brouer@redhat.com>
      Cc: Jin Yao <yao.jin@linux.intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kan Liang <kan.liang@linux.intel.com>
      Cc: Kim Phillips <kim.phillips@arm.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Li Zhijian <lizhijian@cn.fujitsu.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Martin Liška <mliska@suse.cz>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matthias Kaehlcke <mka@chromium.org>
      Cc: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
      Cc: Sandipan Das <sandipan@linux.vnet.ibm.com>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Stephen Rothwell <sfr@canb.auug.org.au>
      Cc: Takuya Yamamoto <tkydevel@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Richter <tmricht@linux.ibm.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: William Cohen <wcohen@redhat.com>
      Cc: Yonghong Song <yhs@fb.com>
      Link: http://lkml.kernel.org/r/20180416064024.ofjtrz5yuu3ykhvl@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e2f73a18
  2. 03 2月, 2018 1 次提交
    • A
      tools headers: Synchoronize x86 features UAPI headers · 4053717a
      Arnaldo Carvalho de Melo 提交于
      Sync tools/arch/x86/include/asm/{cpu,disabled-,required-}features.h with
      the changes in:
      
        2961298e ("x86/cpufeatures: Clean up Spectre v2 related CPUID flags")
        20ffa1ca ("x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support")
        5d10cbc9 ("x86/cpufeatures: Add AMD feature bits for Speculation Control")
        fc67dd70 ("x86/cpufeatures: Add Intel feature bits for Speculation Control")
        95ca0ee8 ("x86/cpufeatures: Add CPUID_7_EDX CPUID leaf")
        a511e793 ("x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature")
        4fdec203 ("x86/cpufeature: Move processor tracing out of scattered features")
        c995efd5 ("x86/retpoline: Fill RSB on context switch for affected CPUs")
        76b04384 ("x86/retpoline: Add initial retpoline support")
        99c6fa25 ("x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]")
        de791821 ("x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN")
        6cff64b8 ("x86/mm: Use INVPCID for __native_flush_tlb_single()")
      
      None will entail changes in the tools/perf/, synchronizing to elliminate
      these perf build warnings:
      
        Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
        Warning: Kernel ABI header at 'tools/arch/x86/include/asm/required-features.h' differs from latest version at 'arch/x86/include/asm/required-features.h'
        Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: David Woodhouse <dwmw@amazon.co.uk>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: https://lkml.kernel.org/n/tip-dbdjack1k92xar5ccuq4el1h@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      4053717a
  3. 04 11月, 2017 1 次提交
    • I
      tools/headers: Synchronize kernel ABI headers · fb7df12d
      Ingo Molnar 提交于
      After the SPDX license tags were added a number of tooling headers got out of
      sync with their kernel variants, generating lots of build warnings.
      
      Sync them:
      
       - tools/arch/x86/include/asm/disabled-features.h,
         tools/arch/x86/include/asm/required-features.h,
         tools/include/linux/hash.h:
      
           Remove the SPDX tag where the kernel version does not have it.
      
       - tools/include/asm-generic/bitops/__fls.h,
         tools/include/asm-generic/bitops/arch_hweight.h,
         tools/include/asm-generic/bitops/const_hweight.h,
         tools/include/asm-generic/bitops/fls.h,
         tools/include/asm-generic/bitops/fls64.h,
         tools/include/uapi/asm-generic/ioctls.h,
         tools/include/uapi/asm-generic/mman-common.h,
         tools/include/uapi/sound/asound.h,
         tools/include/uapi/linux/kvm.h,
         tools/include/uapi/linux/perf_event.h,
         tools/include/uapi/linux/sched.h,
         tools/include/uapi/linux/vhost.h,
         tools/include/uapi/sound/asound.h:
      
           Add the SPDX tag of the respective kernel header.
      
       - tools/include/uapi/linux/bpf_common.h,
         tools/include/uapi/linux/fcntl.h,
         tools/include/uapi/linux/hw_breakpoint.h,
         tools/include/uapi/linux/mman.h,
         tools/include/uapi/linux/stat.h,
      
           Change the tag to the kernel header version:
      
             -/* SPDX-License-Identifier: GPL-2.0 */
             +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      
      Also sync other header details:
      
       - include/uapi/sound/asound.h:
      
           Fix pointless end of line whitespace noise the header grew in this cycle.
      
       - tools/arch/x86/lib/memcpy_64.S:
      
           Sync the code and add tools/include/asm/export.h with dummy wrappers
           to support building the kernel side code in a tooling header environment.
      
       - tools/include/uapi/asm-generic/mman.h,
         tools/include/uapi/linux/bpf.h:
      
           Sync other details that don't impact tooling's use of the ABIs.
      Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: linux-kernel@vger.kernel.org
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Stephen Rothwell <sfr@canb.auug.org.au>
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      fb7df12d
  4. 02 11月, 2017 1 次提交
    • G
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman 提交于
      Many source files in the tree are missing licensing information, which
      makes it harder for compliance tools to determine the correct license.
      
      By default all files without license information are under the default
      license of the kernel, which is GPL version 2.
      
      Update the files which contain no license information with the 'GPL-2.0'
      SPDX license identifier.  The SPDX identifier is a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.
      
      How this work was done:
      
      Patches were generated and checked against linux-4.14-rc6 for a subset of
      the use cases:
       - file had no licensing information it it.
       - file was a */uapi/* one with no licensing information in it,
       - file was a */uapi/* one with existing licensing information,
      
      Further patches will be generated in subsequent months to fix up cases
      where non-standard license headers were used, and references to license
      had to be inferred by heuristics based on keywords.
      
      The analysis to determine which SPDX License Identifier to be applied to
      a file was done in a spreadsheet of side by side results from of the
      output of two independent scanners (ScanCode & Windriver) producing SPDX
      tag:value files created by Philippe Ombredanne.  Philippe prepared the
      base worksheet, and did an initial spot review of a few 1000 files.
      
      The 4.13 kernel was the starting point of the analysis with 60,537 files
      assessed.  Kate Stewart did a file by file comparison of the scanner
      results in the spreadsheet to determine which SPDX license identifier(s)
      to be applied to the file. She confirmed any determination that was not
      immediately clear with lawyers working with the Linux Foundation.
      
      Criteria used to select files for SPDX license identifier tagging was:
       - Files considered eligible had to be source code files.
       - Make and config files were included as candidates if they contained >5
         lines of source
       - File already had some variant of a license header in it (even if <5
         lines).
      
      All documentation files were explicitly excluded.
      
      The following heuristics were used to determine which SPDX license
      identifiers to apply.
      
       - when both scanners couldn't find any license traces, file was
         considered to have no license information in it, and the top level
         COPYING file license applied.
      
         For non */uapi/* files that summary was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0                                              11139
      
         and resulted in the first patch in this series.
      
         If that file was a */uapi/* path one, it was "GPL-2.0 WITH
         Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0 WITH Linux-syscall-note                        930
      
         and resulted in the second patch in this series.
      
       - if a file had some form of licensing information in it, and was one
         of the */uapi/* ones, it was denoted with the Linux-syscall-note if
         any GPL family license was found in the file or had no licensing in
         it (per prior point).  Results summary:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|------
         GPL-2.0 WITH Linux-syscall-note                       270
         GPL-2.0+ WITH Linux-syscall-note                      169
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
         LGPL-2.1+ WITH Linux-syscall-note                      15
         GPL-1.0+ WITH Linux-syscall-note                       14
         ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
         LGPL-2.0+ WITH Linux-syscall-note                       4
         LGPL-2.1 WITH Linux-syscall-note                        3
         ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
         ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
      
         and that resulted in the third patch in this series.
      
       - when the two scanners agreed on the detected license(s), that became
         the concluded license(s).
      
       - when there was disagreement between the two scanners (one detected a
         license but the other didn't, or they both detected different
         licenses) a manual inspection of the file occurred.
      
       - In most cases a manual inspection of the information in the file
         resulted in a clear resolution of the license that should apply (and
         which scanner probably needed to revisit its heuristics).
      
       - When it was not immediately clear, the license identifier was
         confirmed with lawyers working with the Linux Foundation.
      
       - If there was any question as to the appropriate license identifier,
         the file was flagged for further research and to be revisited later
         in time.
      
      In total, over 70 hours of logged manual review was done on the
      spreadsheet to determine the SPDX license identifiers to apply to the
      source files by Kate, Philippe, Thomas and, in some cases, confirmation
      by lawyers working with the Linux Foundation.
      
      Kate also obtained a third independent scan of the 4.13 code base from
      FOSSology, and compared selected files where the other two scanners
      disagreed against that SPDX file, to see if there was new insights.  The
      Windriver scanner is based on an older version of FOSSology in part, so
      they are related.
      
      Thomas did random spot checks in about 500 files from the spreadsheets
      for the uapi headers and agreed with SPDX license identifier in the
      files he inspected. For the non-uapi files Thomas did random spot checks
      in about 15000 files.
      
      In initial set of patches against 4.14-rc6, 3 files were found to have
      copy/paste license identifier errors, and have been fixed to reflect the
      correct identifier.
      
      Additionally Philippe spent 10 hours this week doing a detailed manual
      inspection and review of the 12,461 patched files from the initial patch
      version early this week with:
       - a full scancode scan run, collecting the matched texts, detected
         license ids and scores
       - reviewing anything where there was a license detected (about 500+
         files) to ensure that the applied SPDX license was correct
       - reviewing anything where there was no detection but the patch license
         was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
         SPDX license was correct
      
      This produced a worksheet with 20 files needing minor correction.  This
      worksheet was then exported into 3 different .csv files for the
      different types of files to be modified.
      
      These .csv files were then reviewed by Greg.  Thomas wrote a script to
      parse the csv files and add the proper SPDX tag to the file, in the
      format that the file expected.  This script was further refined by Greg
      based on the output to detect more types of files automatically and to
      distinguish between header and source .c files (which need different
      comment types.)  Finally Greg ran the script using the .csv files to
      generate the patches.
      Reviewed-by: NKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  5. 24 5月, 2017 1 次提交
    • I
      tools/include: Sync kernel ABI headers with tooling headers · 6e30437b
      Ingo Molnar 提交于
      Sync (copy) the following v4.12 kernel headers to the tooling headers:
      
        arch/x86/include/asm/disabled-features.h:
        arch/x86/include/uapi/asm/kvm.h:
        arch/powerpc/include/uapi/asm/kvm.h:
        arch/s390/include/uapi/asm/kvm.h:
        arch/arm/include/uapi/asm/kvm.h:
        arch/arm64/include/uapi/asm/kvm.h:
      
         - 'struct kvm_sync_regs' got changed in an ABI-incompatible way,
           fortunately none of the (in-kernel) tooling relied on it
      
         - new KVM_DEV calls added
      
        arch/x86/include/asm/required-features.h:
      
         - 5-level paging hardware ABI detail added
      
        arch/x86/include/asm/cpufeatures.h:
      
         - new CPU feature added
      
        arch/x86/include/uapi/asm/vmx.h:
      
         - new VMX exit conditions
      
      None of the changes requires fixes in the tooling source code.
      
      This addresses the following warnings:
      
        Warning: include/uapi/linux/stat.h differs from kernel
        Warning: arch/x86/include/asm/disabled-features.h differs from kernel
        Warning: arch/x86/include/asm/required-features.h differs from kernel
        Warning: arch/x86/include/asm/cpufeatures.h differs from kernel
        Warning: arch/x86/include/uapi/asm/kvm.h differs from kernel
        Warning: arch/x86/include/uapi/asm/vmx.h differs from kernel
        Warning: arch/powerpc/include/uapi/asm/kvm.h differs from kernel
        Warning: arch/s390/include/uapi/asm/kvm.h differs from kernel
        Warning: arch/arm/include/uapi/asm/kvm.h differs from kernel
        Warning: arch/arm64/include/uapi/asm/kvm.h differs from kernel
      
      Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Milian Wolff <milian.wolff@kdab.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Yao Jin <yao.jin@linux.intel.com>
      Cc: kernel-team@lge.com
      Link: http://lkml.kernel.org/r/20170524065721.j2mlch6bgk5klgbc@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      6e30437b
  6. 09 8月, 2016 1 次提交
    • A
      tools: Sync cpufeatures headers with the kernel · 840b49ba
      Arnaldo Carvalho de Melo 提交于
      Due to:
      
        1e61f78b ("x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated")
      
      No changes to tools using those headers (tools/arch/x86/lib/mem{set,cpu}_64.S)
      seems necessary.
      
      Detected by the tools build header drift checker:
      
        $ make -C tools/perf O=/tmp/build/perf
        make: Entering directory '/home/acme/git/linux/tools/perf'
          BUILD:   Doing 'make -j4' parallel build
          GEN      /tmp/build/perf/common-cmds.h
        Warning: tools/arch/x86/include/asm/disabled-features.h differs from kernel
        Warning: tools/arch/x86/include/asm/required-features.h differs from kernel
        Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel
          CC       /tmp/build/perf/util/probe-finder.o
          CC       /tmp/build/perf/builtin-help.o
        <SNIP>
        ^C$
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/n/tip-ja75m7zk8j0jkzmrv16i5ehw@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      840b49ba
  7. 13 7月, 2016 1 次提交
  8. 30 6月, 2016 2 次提交
    • D
      x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated · 1e61f78b
      Dave Hansen 提交于
      x86 has two macros which allow us to evaluate some CPUID-based
      features at compile time:
      
      	REQUIRED_MASK_BIT_SET()
      	DISABLED_MASK_BIT_SET()
      
      They're both defined by having the compiler check the bit
      argument against some constant masks of features.
      
      But, when adding new CPUID leaves, we need to check new words
      for these macros.  So make sure that those macros and the
      REQUIRED_MASK* and DISABLED_MASK* get updated when necessary.
      
      This looks kinda silly to have an open-coded value ("18" in
      this case) open-coded in 5 places in the code.  But, we really do
      need 5 places updated when NCAPINTS gets bumped, so now we just
      force the issue.
      Signed-off-by: NDave Hansen <dave.hansen@linux.intel.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Dave Hansen <dave@sr71.net>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/20160629200108.92466F6F@viggo.jf.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      1e61f78b
    • D
      x86/cpufeature: Update cpufeaure macros · 6e17cb9c
      Dave Hansen 提交于
      We had a new CPUID "NCAPINT" word added, but the REQUIRED_MASK and
      DISABLED_MASK macros did not get updated.  Update them.
      
      None of the features was needed in these masks, so there was no
      harm, but we should keep them updated anyway.
      Signed-off-by: NDave Hansen <dave.hansen@linux.intel.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Dave Hansen <dave@sr71.net>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/20160629200107.8D3C9A31@viggo.jf.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      6e17cb9c
  9. 16 2月, 2016 1 次提交
    • D
      x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions · dfb4a70f
      Dave Hansen 提交于
      There are two CPUID bits for protection keys.  One is for whether
      the CPU contains the feature, and the other will appear set once
      the OS enables protection keys.  Specifically:
      
      	Bit 04: OSPKE. If 1, OS has set CR4.PKE to enable
      	Protection keys (and the RDPKRU/WRPKRU instructions)
      
      This is because userspace can not see CR4 contents, but it can
      see CPUID contents.
      
      X86_FEATURE_PKU is referred to as "PKU" in the hardware documentation:
      
      	CPUID.(EAX=07H,ECX=0H):ECX.PKU [bit 3]
      
      X86_FEATURE_OSPKE is "OSPKU":
      
      	CPUID.(EAX=07H,ECX=0H):ECX.OSPKE [bit 4]
      
      These are the first CPU features which need to look at the
      ECX word in CPUID leaf 0x7, so this patch also includes
      fetching that word in to the cpuinfo->x86_capability[] array.
      
      Add it to the disabled-features mask when its config option is
      off.  Even though we are not using it here, we also extend the
      REQUIRED_MASK_BIT_SET() macro to keep it mirroring the
      DISABLED_MASK_BIT_SET() version.
      
      This means that in almost all code, you should use:
      
      	cpu_has(c, X86_FEATURE_PKU)
      
      and *not* the CONFIG option.
      Signed-off-by: NDave Hansen <dave.hansen@linux.intel.com>
      Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Dave Hansen <dave@sr71.net>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: linux-mm@kvack.org
      Link: http://lkml.kernel.org/r/20160212210201.7714C250@viggo.jf.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      dfb4a70f
  10. 29 1月, 2013 1 次提交
  11. 08 7月, 2010 1 次提交
  12. 09 4月, 2009 1 次提交
  13. 31 3月, 2009 2 次提交
  14. 23 10月, 2008 2 次提交
  15. 06 9月, 2008 1 次提交
  16. 19 8月, 2008 1 次提交
  17. 23 7月, 2008 1 次提交
    • V
      x86: consolidate header guards · 77ef50a5
      Vegard Nossum 提交于
      This patch is the result of an automatic script that consolidates the
      format of all the headers in include/asm-x86/.
      
      The format:
      
      1. No leading underscore. Names with leading underscores are reserved.
      2. Pathname components are separated by two underscores. So we can
         distinguish between mm_types.h and mm/types.h.
      3. Everything except letters and numbers are turned into single
         underscores.
      Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com>
      77ef50a5
  18. 08 7月, 2008 1 次提交
  19. 13 5月, 2008 1 次提交
  20. 24 10月, 2007 1 次提交
  21. 11 10月, 2007 1 次提交