Merge branch 'sched-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[karo-tx-linux.git] / arch / x86 / kernel / cpu / microcode / core.c

diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index 36a83617eb21cc19245794a89c986eba45179d3a..6236a54a63f449ce2ea824be13a3bcca2f57e4b9 100644 (file)
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -1,74 +1,16 @@
 /*
- *     Intel CPU Microcode Update Driver for Linux
+ * CPU Microcode Update Driver for Linux
  *
- *     Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
- *                   2006      Shaohua Li <shaohua.li@intel.com>
+ * Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
+ *           2006      Shaohua Li <shaohua.li@intel.com>
+ *           2013-2015 Borislav Petkov <bp@alien8.de>
  *
- *     This driver allows to upgrade microcode on Intel processors
- *     belonging to IA-32 family - PentiumPro, Pentium II,
- *     Pentium III, Xeon, Pentium 4, etc.
+ * This driver allows to upgrade microcode on x86 processors.
  *
- *     Reference: Section 8.11 of Volume 3a, IA-32 Intel? Architecture
- *     Software Developer's Manual
- *     Order Number 253668 or free download from:
- *
- *     http://developer.intel.com/Assets/PDF/manual/253668.pdf 
- *
- *     For more information, go to http://www.urbanmyth.org/microcode
- *
- *     This program is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License
- *     as published by the Free Software Foundation; either version
- *     2 of the License, or (at your option) any later version.
- *
- *     1.0     16 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *             Initial release.
- *     1.01    18 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *             Added read() support + cleanups.
- *     1.02    21 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *             Added 'device trimming' support. open(O_WRONLY) zeroes
- *             and frees the saved copy of applied microcode.
- *     1.03    29 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *             Made to use devfs (/dev/cpu/microcode) + cleanups.
- *     1.04    06 Jun 2000, Simon Trimmer <simon@veritas.com>
- *             Added misc device support (now uses both devfs and misc).
- *             Added MICROCODE_IOCFREE ioctl to clear memory.
- *     1.05    09 Jun 2000, Simon Trimmer <simon@veritas.com>
- *             Messages for error cases (non Intel & no suitable microcode).
- *     1.06    03 Aug 2000, Tigran Aivazian <tigran@veritas.com>
- *             Removed ->release(). Removed exclusive open and status bitmap.
- *             Added microcode_rwsem to serialize read()/write()/ioctl().
- *             Removed global kernel lock usage.
- *     1.07    07 Sep 2000, Tigran Aivazian <tigran@veritas.com>
- *             Write 0 to 0x8B msr and then cpuid before reading revision,
- *             so that it works even if there were no update done by the
- *             BIOS. Otherwise, reading from 0x8B gives junk (which happened
- *             to be 0 on my machine which is why it worked even when I
- *             disabled update by the BIOS)
- *             Thanks to Eric W. Biederman <ebiederman@lnxi.com> for the fix.
- *     1.08    11 Dec 2000, Richard Schaal <richard.schaal@intel.com> and
- *                          Tigran Aivazian <tigran@veritas.com>
- *             Intel Pentium 4 processor support and bugfixes.
- *     1.09    30 Oct 2001, Tigran Aivazian <tigran@veritas.com>
- *             Bugfix for HT (Hyper-Threading) enabled processors
- *             whereby processor resources are shared by all logical processors
- *             in a single CPU package.
- *     1.10    28 Feb 2002 Asit K Mallick <asit.k.mallick@intel.com> and
- *             Tigran Aivazian <tigran@veritas.com>,
- *             Serialize updates as required on HT processors due to
- *             speculative nature of implementation.
- *     1.11    22 Mar 2002 Tigran Aivazian <tigran@veritas.com>
- *             Fix the panic when writing zero-length microcode chunk.
- *     1.12    29 Sep 2003 Nitin Kamble <nitin.a.kamble@intel.com>,
- *             Jun Nakajima <jun.nakajima@intel.com>
- *             Support for the microcode updates in the new format.
- *     1.13    10 Oct 2003 Tigran Aivazian <tigran@veritas.com>
- *             Removed ->read() method and obsoleted MICROCODE_IOCFREE ioctl
- *             because we no longer hold a copy of applied microcode
- *             in kernel memory.
- *     1.14    25 Jun 2004 Tigran Aivazian <tigran@veritas.com>
- *             Fix sigmatch() macro to handle old CPUs with pf == 0.
- *             Thanks to Stuart Swales for pointing out this bug.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt