License cleanup: add SPDX GPL-2.0 license identifier to files with no license
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: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-16 22:20:36 +00:00
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#ifndef _ASM_IA64_KREGS_H
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#define _ASM_IA64_KREGS_H
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/*
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* Copyright (C) 2001-2002 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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/*
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* This file defines the kernel register usage convention used by Linux/ia64.
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*/
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/*
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* Kernel registers:
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*/
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#define IA64_KR_IO_BASE 0 /* ar.k0: legacy I/O base address */
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#define IA64_KR_TSSD 1 /* ar.k1: IVE uses this as the TSSD */
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#define IA64_KR_PER_CPU_DATA 3 /* ar.k3: physical per-CPU base */
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#define IA64_KR_CURRENT_STACK 4 /* ar.k4: what's mapped in IA64_TR_CURRENT_STACK */
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#define IA64_KR_FPU_OWNER 5 /* ar.k5: fpu-owner (UP only, at the moment) */
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#define IA64_KR_CURRENT 6 /* ar.k6: "current" task pointer */
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#define IA64_KR_PT_BASE 7 /* ar.k7: page table base address (physical) */
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#define _IA64_KR_PASTE(x,y) x##y
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#define _IA64_KR_PREFIX(n) _IA64_KR_PASTE(ar.k, n)
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#define IA64_KR(n) _IA64_KR_PREFIX(IA64_KR_##n)
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/*
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* Translation registers:
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*/
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#define IA64_TR_KERNEL 0 /* itr0, dtr0: maps kernel image (code & data) */
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#define IA64_TR_PALCODE 1 /* itr1: maps PALcode as required by EFI */
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2006-10-13 17:08:13 +00:00
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#define IA64_TR_CURRENT_STACK 1 /* dtr1: maps kernel's memory- & register-stacks */
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2005-04-16 22:20:36 +00:00
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2008-04-03 18:02:58 +00:00
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#define IA64_TR_ALLOC_BASE 2 /* itr&dtr: Base of dynamic TR resource*/
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2008-10-17 20:47:53 +00:00
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#define IA64_TR_ALLOC_MAX 64 /* Max number for dynamic use*/
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2008-04-03 18:02:58 +00:00
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2005-04-16 22:20:36 +00:00
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/* Processor status register bits: */
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#define IA64_PSR_BE_BIT 1
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#define IA64_PSR_UP_BIT 2
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#define IA64_PSR_AC_BIT 3
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#define IA64_PSR_MFL_BIT 4
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#define IA64_PSR_MFH_BIT 5
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#define IA64_PSR_IC_BIT 13
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#define IA64_PSR_I_BIT 14
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#define IA64_PSR_PK_BIT 15
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#define IA64_PSR_DT_BIT 17
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#define IA64_PSR_DFL_BIT 18
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#define IA64_PSR_DFH_BIT 19
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#define IA64_PSR_SP_BIT 20
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#define IA64_PSR_PP_BIT 21
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#define IA64_PSR_DI_BIT 22
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#define IA64_PSR_SI_BIT 23
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#define IA64_PSR_DB_BIT 24
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#define IA64_PSR_LP_BIT 25
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#define IA64_PSR_TB_BIT 26
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#define IA64_PSR_RT_BIT 27
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/* The following are not affected by save_flags()/restore_flags(): */
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#define IA64_PSR_CPL0_BIT 32
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#define IA64_PSR_CPL1_BIT 33
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#define IA64_PSR_IS_BIT 34
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#define IA64_PSR_MC_BIT 35
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#define IA64_PSR_IT_BIT 36
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#define IA64_PSR_ID_BIT 37
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#define IA64_PSR_DA_BIT 38
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#define IA64_PSR_DD_BIT 39
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#define IA64_PSR_SS_BIT 40
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#define IA64_PSR_RI_BIT 41
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#define IA64_PSR_ED_BIT 43
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#define IA64_PSR_BN_BIT 44
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#define IA64_PSR_IA_BIT 45
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/* A mask of PSR bits that we generally don't want to inherit across a clone2() or an
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execve(). Only list flags here that need to be cleared/set for BOTH clone2() and
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execve(). */
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#define IA64_PSR_BITS_TO_CLEAR (IA64_PSR_MFL | IA64_PSR_MFH | IA64_PSR_DB | IA64_PSR_LP | \
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IA64_PSR_TB | IA64_PSR_ID | IA64_PSR_DA | IA64_PSR_DD | \
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IA64_PSR_SS | IA64_PSR_ED | IA64_PSR_IA)
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#define IA64_PSR_BITS_TO_SET (IA64_PSR_DFH | IA64_PSR_SP)
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#define IA64_PSR_BE (__IA64_UL(1) << IA64_PSR_BE_BIT)
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#define IA64_PSR_UP (__IA64_UL(1) << IA64_PSR_UP_BIT)
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#define IA64_PSR_AC (__IA64_UL(1) << IA64_PSR_AC_BIT)
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#define IA64_PSR_MFL (__IA64_UL(1) << IA64_PSR_MFL_BIT)
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#define IA64_PSR_MFH (__IA64_UL(1) << IA64_PSR_MFH_BIT)
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#define IA64_PSR_IC (__IA64_UL(1) << IA64_PSR_IC_BIT)
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#define IA64_PSR_I (__IA64_UL(1) << IA64_PSR_I_BIT)
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#define IA64_PSR_PK (__IA64_UL(1) << IA64_PSR_PK_BIT)
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#define IA64_PSR_DT (__IA64_UL(1) << IA64_PSR_DT_BIT)
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#define IA64_PSR_DFL (__IA64_UL(1) << IA64_PSR_DFL_BIT)
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#define IA64_PSR_DFH (__IA64_UL(1) << IA64_PSR_DFH_BIT)
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#define IA64_PSR_SP (__IA64_UL(1) << IA64_PSR_SP_BIT)
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#define IA64_PSR_PP (__IA64_UL(1) << IA64_PSR_PP_BIT)
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#define IA64_PSR_DI (__IA64_UL(1) << IA64_PSR_DI_BIT)
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#define IA64_PSR_SI (__IA64_UL(1) << IA64_PSR_SI_BIT)
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#define IA64_PSR_DB (__IA64_UL(1) << IA64_PSR_DB_BIT)
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#define IA64_PSR_LP (__IA64_UL(1) << IA64_PSR_LP_BIT)
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#define IA64_PSR_TB (__IA64_UL(1) << IA64_PSR_TB_BIT)
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#define IA64_PSR_RT (__IA64_UL(1) << IA64_PSR_RT_BIT)
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/* The following are not affected by save_flags()/restore_flags(): */
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#define IA64_PSR_CPL (__IA64_UL(3) << IA64_PSR_CPL0_BIT)
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#define IA64_PSR_IS (__IA64_UL(1) << IA64_PSR_IS_BIT)
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#define IA64_PSR_MC (__IA64_UL(1) << IA64_PSR_MC_BIT)
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#define IA64_PSR_IT (__IA64_UL(1) << IA64_PSR_IT_BIT)
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#define IA64_PSR_ID (__IA64_UL(1) << IA64_PSR_ID_BIT)
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#define IA64_PSR_DA (__IA64_UL(1) << IA64_PSR_DA_BIT)
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#define IA64_PSR_DD (__IA64_UL(1) << IA64_PSR_DD_BIT)
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#define IA64_PSR_SS (__IA64_UL(1) << IA64_PSR_SS_BIT)
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#define IA64_PSR_RI (__IA64_UL(3) << IA64_PSR_RI_BIT)
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#define IA64_PSR_ED (__IA64_UL(1) << IA64_PSR_ED_BIT)
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#define IA64_PSR_BN (__IA64_UL(1) << IA64_PSR_BN_BIT)
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#define IA64_PSR_IA (__IA64_UL(1) << IA64_PSR_IA_BIT)
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/* User mask bits: */
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#define IA64_PSR_UM (IA64_PSR_BE | IA64_PSR_UP | IA64_PSR_AC | IA64_PSR_MFL | IA64_PSR_MFH)
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/* Default Control Register */
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#define IA64_DCR_PP_BIT 0 /* privileged performance monitor default */
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#define IA64_DCR_BE_BIT 1 /* big-endian default */
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#define IA64_DCR_LC_BIT 2 /* ia32 lock-check enable */
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#define IA64_DCR_DM_BIT 8 /* defer TLB miss faults */
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#define IA64_DCR_DP_BIT 9 /* defer page-not-present faults */
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#define IA64_DCR_DK_BIT 10 /* defer key miss faults */
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#define IA64_DCR_DX_BIT 11 /* defer key permission faults */
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#define IA64_DCR_DR_BIT 12 /* defer access right faults */
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#define IA64_DCR_DA_BIT 13 /* defer access bit faults */
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#define IA64_DCR_DD_BIT 14 /* defer debug faults */
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#define IA64_DCR_PP (__IA64_UL(1) << IA64_DCR_PP_BIT)
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#define IA64_DCR_BE (__IA64_UL(1) << IA64_DCR_BE_BIT)
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#define IA64_DCR_LC (__IA64_UL(1) << IA64_DCR_LC_BIT)
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#define IA64_DCR_DM (__IA64_UL(1) << IA64_DCR_DM_BIT)
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#define IA64_DCR_DP (__IA64_UL(1) << IA64_DCR_DP_BIT)
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#define IA64_DCR_DK (__IA64_UL(1) << IA64_DCR_DK_BIT)
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#define IA64_DCR_DX (__IA64_UL(1) << IA64_DCR_DX_BIT)
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#define IA64_DCR_DR (__IA64_UL(1) << IA64_DCR_DR_BIT)
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#define IA64_DCR_DA (__IA64_UL(1) << IA64_DCR_DA_BIT)
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#define IA64_DCR_DD (__IA64_UL(1) << IA64_DCR_DD_BIT)
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/* Interrupt Status Register */
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#define IA64_ISR_X_BIT 32 /* execute access */
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#define IA64_ISR_W_BIT 33 /* write access */
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#define IA64_ISR_R_BIT 34 /* read access */
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#define IA64_ISR_NA_BIT 35 /* non-access */
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#define IA64_ISR_SP_BIT 36 /* speculative load exception */
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#define IA64_ISR_RS_BIT 37 /* mandatory register-stack exception */
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#define IA64_ISR_IR_BIT 38 /* invalid register frame exception */
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#define IA64_ISR_CODE_MASK 0xf
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#define IA64_ISR_X (__IA64_UL(1) << IA64_ISR_X_BIT)
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#define IA64_ISR_W (__IA64_UL(1) << IA64_ISR_W_BIT)
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#define IA64_ISR_R (__IA64_UL(1) << IA64_ISR_R_BIT)
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#define IA64_ISR_NA (__IA64_UL(1) << IA64_ISR_NA_BIT)
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#define IA64_ISR_SP (__IA64_UL(1) << IA64_ISR_SP_BIT)
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#define IA64_ISR_RS (__IA64_UL(1) << IA64_ISR_RS_BIT)
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#define IA64_ISR_IR (__IA64_UL(1) << IA64_ISR_IR_BIT)
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/* ISR code field for non-access instructions */
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#define IA64_ISR_CODE_TPA 0
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#define IA64_ISR_CODE_FC 1
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#define IA64_ISR_CODE_PROBE 2
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#define IA64_ISR_CODE_TAK 3
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#define IA64_ISR_CODE_LFETCH 4
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#define IA64_ISR_CODE_PROBEF 5
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#endif /* _ASM_IA64_kREGS_H */
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