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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/nwfpe/ChangeLog | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/nwfpe/ChangeLog')
-rw-r--r-- | kernel/arch/arm/nwfpe/ChangeLog | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/kernel/arch/arm/nwfpe/ChangeLog b/kernel/arch/arm/nwfpe/ChangeLog new file mode 100644 index 000000000..fa8028b1e --- /dev/null +++ b/kernel/arch/arm/nwfpe/ChangeLog @@ -0,0 +1,91 @@ +2003-03-22 Ralph Siemsen <ralphs@netwinder.org> + * Reformat all but softfloat files to get a consistent coding style. + Used "indent -kr -i8 -ts8 -sob -l132 -ss" and a few manual fixups. + * Removed dead code and fixed function protypes to match definitions. + * Consolidated use of (opcode && MASK_ARITHMETIC_OPCODE) >> 20. + * Make 80-bit precision a compile-time option. (1%) + * Only initialize FPE state once in repeat-FP situations. (6%) + +2002-01-19 Russell King <rmk@arm.linux.org.uk> + + * fpa11.h - Add documentation + - remove userRegisters pointer from this structure. + - add new method to obtain integer register values. + * softfloat.c - Remove float128 + * softfloat.h - Remove float128 + * softfloat-specialize - Remove float128 + + * The FPA11 structure is not a kernel-specific data structure. + It is used by users of ptrace to examine the values of the + floating point registers. Therefore, any changes to the + FPA11 structure (size or position of elements contained + within) have to be well thought out. + + * Since 128-bit float requires the FPA11 structure to change + size, it has been removed. 128-bit float is currently unused, + and needs various things to be re-worked so that we won't + overflow the available space in the task structure. + + * The changes are designed to break any patch that goes on top + of this code, so that the authors properly review their changes. + +1999-08-19 Scott Bambrough <scottb@netwinder.org> + + * fpmodule.c - Changed version number to 0.95 + * fpa11.h - modified FPA11, FPREG structures + * fpa11.c - Changes due to FPA11, FPREG structure alterations. + * fpa11_cpdo.c - Changes due to FPA11, FPREG structure alterations. + * fpa11_cpdt.c - Changes due to FPA11, FPREG structure alterations. + * fpa11_cprt.c - Changes due to FPA11, FPREG structure alterations. + * single_cpdo.c - Changes due to FPA11, FPREG structure alterations. + * double_cpdo.c - Changes due to FPA11, FPREG structure alterations. + * extended_cpdo.c - Changes due to FPA11, FPREG structure alterations. + + * I discovered several bugs. First and worst is that the kernel + passes in a pointer to the FPE's state area. This is defined + as a struct user_fp (see user.h). This pointer was cast to a + FPA11*. Unfortunately FPA11 and user_fp are of different sizes; + user_fp is smaller. This meant that the FPE scribbled on things + below its area, which is bad, as the area is in the thread_struct + embedded in the process task structure. Thus we were scribbling + over one of the most important structures in the entire OS. + + * user_fp and FPA11 have now been harmonized. Most of the changes + in the above code were dereferencing problems due to moving the + register type out of FPREG, and getting rid of the union variable + fpvalue. + + * Second I noticed resetFPA11 was not always being called for a + task. This should happen on the first floating point exception + that occurs. It is controlled by init_flag in FPA11. The + comment in the code beside init_flag state the kernel guarantees + this to be zero. Not so. I found that the kernel recycles task + structures, and that recycled ones may not have init_flag zeroed. + I couldn't even find anything that guarantees it is zeroed when + when the task structure is initially allocated. In any case + I now initialize the entire FPE state in the thread structure to + zero when allocated and recycled. See alloc_task_struct() and + flush_thread() in arch/arm/process.c. The change to + alloc_task_struct() may not be necessary, but I left it in for + completeness (better safe than sorry). + +1998-11-23 Scott Bambrough <scottb@netwinder.org> + + * README.FPE - fix typo in description of lfm/sfm instructions + * NOTES - Added file to describe known bugs/problems + * fpmodule.c - Changed version number to 0.94 + +1998-11-20 Scott Bambrough <scottb@netwinder.org> + + * README.FPE - fix description of URD, NRM instructions + * TODO - remove URD, NRM instructions from TODO list + * single_cpdo.c - implement URD, NRM + * double_cpdo.c - implement URD, NRM + * extended_cpdo.c - implement URD, NRM + +1998-11-19 Scott Bambrough <scottb@netwinder.org> + + * ChangeLog - Added this file to track changes made. + * fpa11.c - added code to initialize register types to typeNone + * fpa11_cpdt.c - fixed bug in storeExtended (typeExtended changed to + typeDouble in switch statement) |