Commit 6b44e72a authored by Borislav Petkov's avatar Borislav Petkov Committed by Ingo Molnar
Browse files

x86/cpu/microcode: Zap changelog 



It is useless at best and git history has it all detailed
anyway. Update copyright while at it.

Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
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: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1431332153-18566-3-git-send-email-bp@alien8.de


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 760d765b

arch/x86/kernel/cpu/microcode/core.c

+9 −67
Original line number Diff line number Diff line 
/*

 *	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>

 *	      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.

 *

 *	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 driver allows to upgrade microcode on x86 processors.

 *

 * 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.

 */



#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

arch/x86/kernel/cpu/microcode/intel.c

+7 −68
Original line number Diff line number Diff line
@@ -4,71 +4,10 @@ 
 * Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>

 *		 2006 Shaohua Li <shaohua.li@intel.com>

 *

 *	This driver allows to upgrade microcode on Intel processors

 *	belonging to IA-32 family - PentiumPro, Pentium II,

 *	Pentium III, Xeon, Pentium 4, etc.

 *

 *	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.

 */



#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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