1. 02 9月, 2020 24 次提交
  2. 09 6月, 2020 1 次提交
  3. 28 5月, 2020 1 次提交
    • A
      open: introduce openat2(2) syscall · 5b9369e5
      Aleksa Sarai 提交于
      to #26323588
      
      commit fddb5d430ad9fa91b49b1d34d0202ffe2fa0e179 upstream.
      
      /* Background. */
      For a very long time, extending openat(2) with new features has been
      incredibly frustrating. This stems from the fact that openat(2) is
      possibly the most famous counter-example to the mantra "don't silently
      accept garbage from userspace" -- it doesn't check whether unknown flags
      are present[1].
      
      This means that (generally) the addition of new flags to openat(2) has
      been fraught with backwards-compatibility issues (O_TMPFILE has to be
      defined as __O_TMPFILE|O_DIRECTORY|[O_RDWR or O_WRONLY] to ensure old
      kernels gave errors, since it's insecure to silently ignore the
      flag[2]). All new security-related flags therefore have a tough road to
      being added to openat(2).
      
      Userspace also has a hard time figuring out whether a particular flag is
      supported on a particular kernel. While it is now possible with
      contemporary kernels (thanks to [3]), older kernels will expose unknown
      flag bits through fcntl(F_GETFL). Giving a clear -EINVAL during
      openat(2) time matches modern syscall designs and is far more
      fool-proof.
      
      In addition, the newly-added path resolution restriction LOOKUP flags
      (which we would like to expose to user-space) don't feel related to the
      pre-existing O_* flag set -- they affect all components of path lookup.
      We'd therefore like to add a new flag argument.
      
      Adding a new syscall allows us to finally fix the flag-ignoring problem,
      and we can make it extensible enough so that we will hopefully never
      need an openat3(2).
      
      /* Syscall Prototype. */
        /*
         * open_how is an extensible structure (similar in interface to
         * clone3(2) or sched_setattr(2)). The size parameter must be set to
         * sizeof(struct open_how), to allow for future extensions. All future
         * extensions will be appended to open_how, with their zero value
         * acting as a no-op default.
         */
        struct open_how { /* ... */ };
      
        int openat2(int dfd, const char *pathname,
                    struct open_how *how, size_t size);
      
      /* Description. */
      The initial version of 'struct open_how' contains the following fields:
      
        flags
          Used to specify openat(2)-style flags. However, any unknown flag
          bits or otherwise incorrect flag combinations (like O_PATH|O_RDWR)
          will result in -EINVAL. In addition, this field is 64-bits wide to
          allow for more O_ flags than currently permitted with openat(2).
      
        mode
          The file mode for O_CREAT or O_TMPFILE.
      
          Must be set to zero if flags does not contain O_CREAT or O_TMPFILE.
      
        resolve
          Restrict path resolution (in contrast to O_* flags they affect all
          path components). The current set of flags are as follows (at the
          moment, all of the RESOLVE_ flags are implemented as just passing
          the corresponding LOOKUP_ flag).
      
          RESOLVE_NO_XDEV       => LOOKUP_NO_XDEV
          RESOLVE_NO_SYMLINKS   => LOOKUP_NO_SYMLINKS
          RESOLVE_NO_MAGICLINKS => LOOKUP_NO_MAGICLINKS
          RESOLVE_BENEATH       => LOOKUP_BENEATH
          RESOLVE_IN_ROOT       => LOOKUP_IN_ROOT
      
      open_how does not contain an embedded size field, because it is of
      little benefit (userspace can figure out the kernel open_how size at
      runtime fairly easily without it). It also only contains u64s (even
      though ->mode arguably should be a u16) to avoid having padding fields
      which are never used in the future.
      
      Note that as a result of the new how->flags handling, O_PATH|O_TMPFILE
      is no longer permitted for openat(2). As far as I can tell, this has
      always been a bug and appears to not be used by userspace (and I've not
      seen any problems on my machines by disallowing it). If it turns out
      this breaks something, we can special-case it and only permit it for
      openat(2) but not openat2(2).
      
      After input from Florian Weimer, the new open_how and flag definitions
      are inside a separate header from uapi/linux/fcntl.h, to avoid problems
      that glibc has with importing that header.
      
      /* Testing. */
      In a follow-up patch there are over 200 selftests which ensure that this
      syscall has the correct semantics and will correctly handle several
      attack scenarios.
      
      In addition, I've written a userspace library[4] which provides
      convenient wrappers around openat2(RESOLVE_IN_ROOT) (this is necessary
      because no other syscalls support RESOLVE_IN_ROOT, and thus lots of care
      must be taken when using RESOLVE_IN_ROOT'd file descriptors with other
      syscalls). During the development of this patch, I've run numerous
      verification tests using libpathrs (showing that the API is reasonably
      usable by userspace).
      
      /* Future Work. */
      Additional RESOLVE_ flags have been suggested during the review period.
      These can be easily implemented separately (such as blocking auto-mount
      during resolution).
      
      Furthermore, there are some other proposed changes to the openat(2)
      interface (the most obvious example is magic-link hardening[5]) which
      would be a good opportunity to add a way for userspace to restrict how
      O_PATH file descriptors can be re-opened.
      
      Another possible avenue of future work would be some kind of
      CHECK_FIELDS[6] flag which causes the kernel to indicate to userspace
      which openat2(2) flags and fields are supported by the current kernel
      (to avoid userspace having to go through several guesses to figure it
      out).
      
      [1]: https://lwn.net/Articles/588444/
      [2]: https://lore.kernel.org/lkml/CA+55aFyyxJL1LyXZeBsf2ypriraj5ut1XkNDsunRBqgVjZU_6Q@mail.gmail.com
      [3]: commit 629e014b ("fs: completely ignore unknown open flags")
      [4]: https://sourceware.org/bugzilla/show_bug.cgi?id=17523
      [5]: https://lore.kernel.org/lkml/20190930183316.10190-2-cyphar@cyphar.com/
      [6]: https://youtu.be/ggD-eb3yPVsSuggested-by: NChristian Brauner <christian.brauner@ubuntu.com>
      Signed-off-by: NAleksa Sarai <cyphar@cyphar.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      Acked-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
      5b9369e5
  4. 28 4月, 2020 11 次提交
    • B
      x86/resctrl: Introduce AMD QOS feature · a0658115
      Babu Moger 提交于
      to #26613714
      
      commit 4d05bf71f157d756932e77cdee16dc99e235d636 upstream.
      
      Enable QOS feature on AMD.
      
      Following QoS sub-features are supported on AMD if the underlying
      hardware supports it:
      
       - L3 Cache allocation enforcement
       - L3 Cache occupancy monitoring
       - L3 Code-Data Prioritization support
       - Memory Bandwidth Enforcement (Allocation)
      
      The specification is available at:
      https://developer.amd.com/wp-content/resources/56375.pdf
      
      There are differences in the way some of the features are implemented.
      Separate those functions and add those as vendor specific functions.
      
      The major difference is in MBA feature:
      
       - AMD uses CPUID leaf 0x80000020 to initialize the MBA features.
       - AMD uses direct bandwidth value instead of delay based on bandwidth values.
       - MSR register base addresses are different for MBA.
       - AMD allows non-contiguous L3 cache bit masks.
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-12-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      a0658115
    • B
      x86/resctrl: Fixup the user-visible strings · 487a33b8
      Babu Moger 提交于
      to #26613714
      
      commit 723f1a0dd8e26a7523ba068204bee11c95ded38d upstream.
      
      Fix the messages in rdt_last_cmd_printf() and rdt_last_cmd_puts() to
      make them more meaningful and consistent.
      
       [ bp: s/cpu/CPU/; s/mem\W/memory ]
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-11-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      487a33b8
    • S
      x86/resctrl: Add AMD's X86_FEATURE_MBA to the scattered CPUID features · aa5cc39e
      Sherry Hurwitz 提交于
      to #26613714
      
      commit 9f72f855a6cdbb5313787145a69b474cd9f55f28 upstream.
      
      The feature bit X86_FEATURE_MBA is detected via CPUID leaf 0x80000008
      EBX Bit 06. This bit indicates the support of AMD's MBA feature.
      
      This feature is supported by both Intel and AMD. But they are detected
      in different CPUID leaves.
      
       [ bp: s/cpuid/CPUID/g ]
      Signed-off-by: NSherry Hurwitz <sherry.hurwitz@amd.com>
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Reviewed-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-10-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      aa5cc39e
    • B
      x86/resctrl: Rename the config option INTEL_RDT to RESCTRL · fce127d5
      Babu Moger 提交于
      to #26613714
      
      commit 6fe07ce35e8ad870ba1cf82e0481e0fc0f526eff upstream.
      
      The resource control feature is supported by both Intel and AMD. So,
      rename CONFIG_INTEL_RDT to the vendor-neutral CONFIG_RESCTRL.
      
      Now CONFIG_RESCTRL will be used for both Intel and AMD to enable
      Resource Control support. Update the texts in config and condition
      accordingly.
      
       [ bp: Simplify Kconfig text. ]
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-9-babu.moger@amd.com
      
      [ Shile: fixed conflict in arch/x86/Kconfig ]
      Signed-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      fce127d5
    • B
      x86/resctrl: Add vendor check for the MBA software controller · c7f4c6fb
      Babu Moger 提交于
      to #26613714
      
      commit 580ebb66cbb3de979adb4becbad7bd383746f162 upstream.
      
      MBA software controller support is available only on Intel.
      Suggested-by: NFenghua Yu <fenghua.yu@intel.com>
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-8-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      c7f4c6fb
    • B
      x86/resctrl: Bring cbm_validate() into the resource structure · d6ed287a
      Babu Moger 提交于
      to #26613714
      
      commit a36c5ff560fb32d17c020fa3e7f4c70f753d8834 upstream.
      
      Bring all the functions that are different between the vendors into the
      resource structure and initialize them dynamically. Add _intel suffix to
      the Intel-specific functions.
      
      cbm_validate() which does cache bitmask validation, differs between the
      vendors as AMD allows non-contiguous masks. So, use separate functions
      for Intel and AMD.
      
       [ bp: Massage commit message and fixup rdt_resource members' vertical
         alignment. ]
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-7-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      d6ed287a
    • B
      x86/resctrl: Initialize the vendor-specific resource functions · 77a3ed64
      Babu Moger 提交于
      to #26613714
      
      commit 1ad4fa41d99f606098fd7b90c1f5deb2b3dfae5d upstream.
      
      Initialize the resource functions that are different between the
      vendors. Some features are initialized differently between the vendors.
      Add _intel suffix to Intel-specific functions.
      
      For example, the MBA feature varies significantly between Intel and AMD.
      Separate the initialization of these resource functions. That way we can
      easily add AMD's functions later.
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-6-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      77a3ed64
    • B
      x86/resctrl: Move all the macros to resctrl/internal.h · a7b49907
      Babu Moger 提交于
      to #26613714
      
      commit aa50453a448ad645ea05788505680aa403934aa8 upstream.
      
      Move all the macros to resctrl/internal.h and rename the registers with
      MSR_ prefix for consistency.
      
       [bp: align MSR definitions vertically ]
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-5-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      a7b49907
    • B
      x86/resctrl: Re-arrange the RDT init code · 0d7d96de
      Babu Moger 提交于
      to #26613714
      
      commit 0f00717ecce4b366b3f530153e982cb2eeadafd1 upstream.
      
      Separate the call sequence for rdt_quirks and MBA feature. This is in
      preparation to handle vendor differences in these call sequences. Rename
      the functions to make the flow a bit more meaningful.
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Cc: x86-ml <x86@kernel.org>
      Link: https://lkml.kernel.org/r/20181121202811.4492-4-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      0d7d96de
    • B
      x86/resctrl: Rename the RDT functions and definitions · 51947221
      Babu Moger 提交于
      to #26613714
      
      commit 352940ececaca58536a7fc4ff6b41d181156fd65 upstream.
      
      As AMD is starting to support RESCTRL features, rename the RDT functions
      and definitions to more generic names.
      
      Replace "intel_rdt" with "resctrl" where applicable.
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Reviewed-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-3-babu.moger@amd.comSigned-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      51947221
    • B
      x86/resctrl: Rename and move rdt files to a separate directory · ad6da85b
      Babu Moger 提交于
      to #26613714
      
      commit fa7d949337ccad32c76740c88e0e0351c349053b upstream.
      
      New generation of AMD processors add support for RDT (or QOS) features.
      Together, these features will be called RESCTRL. With more than one
      vendors supporting these features, it seems more appropriate to rename
      these files.
      
      Create a new directory with the name 'resctrl' and move all the
      intel_rdt files to the new directory. This way all the resctrl related
      code resides inside one directory.
      
       [ bp: Add SPDX identifier to the Makefile ]
      Suggested-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NBabu Moger <babu.moger@amd.com>
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Brijesh Singh <brijesh.singh@amd.com>
      Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
      Cc: David Miller <davem@davemloft.net>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Dmitry Safonov <dima@arista.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jann Horn <jannh@google.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: <linux-doc@vger.kernel.org>
      Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Pu Wen <puwen@hygon.cn>
      Cc: <qianyue.zj@alibaba-inc.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Reinette Chatre <reinette.chatre@intel.com>
      Cc: Rian Hunter <rian@alum.mit.edu>
      Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
      Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: <xiaochen.shen@intel.com>
      Link: https://lkml.kernel.org/r/20181121202811.4492-2-babu.moger@amd.com
      
      [ Shile: fixed conflict in arch/x86/kernel/cpu/resctrl/pseudo_lock.c ]
      Signed-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
      Tested-by: NWANG Siyuan <Siyuan.Wang@amd.com>
      Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
      ad6da85b
  5. 25 3月, 2020 1 次提交
  6. 18 3月, 2020 2 次提交