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linux/arch/mips/math-emu
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Paul Burton ca8eb05b5f MIPS: math-emu: Remove pr_err() calls from fpu_emu() 
The FPU emulator includes 2 calls to pr_err() which are triggered by
invalid instruction encodings for MIPSr6 cmp.cond.fmt instructions.
These cases are not kernel errors, merely invalid instructions which are
already handled by delivering a SIGILL which will provide notification
that something failed in cases where that makes sense.

In cases where that SIGILL is somewhat expected & being handled, for
example when crashme happens to generate one of the affected bad
encodings, the message is printed with no useful context about what
triggered it & spams the kernel log for no good reason.

Remove the pr_err() calls to make crashme run silently & treat the bad
encodings the same way we do others, with a SIGILL & no further kernel
log output.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: f8c3c6717a ("MIPS: math-emu: Add support for the CMP.condn.fmt R6 instruction")
Cc: linux-mips@linux-mips.org
Cc: stable <stable@vger.kernel.org> # v4.3+
Patchwork: https://patchwork.linux-mips.org/patch/17253/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 16:33:34 +02:00
..
cp1emu.c MIPS: math-emu: Remove pr_err() calls from fpu_emu() 2017-10-09 16:33:34 +02:00
dp_2008class.c MIPS: math-emu: Add support for the MIPS R6 CLASS FPU instruction 2015-09-03 12:08:14 +02:00
dp_add.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
dp_cmp.c MIPS: math-emu: Remove redundant code from NaN comparison 2015-04-08 01:09:38 +02:00
dp_div.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
dp_fint.c MIPS: math-emu: Cleanup coding style. 2014-05-23 15:11:15 +02:00
dp_flong.c MIPS: math-emu: Cleanup coding style. 2014-05-23 15:11:15 +02:00
dp_fmax.c MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of both infinite inputs 2017-08-29 15:21:55 +02:00
dp_fmin.c MIPS: math-emu: MINA.<D|S>: Fix some cases of infinity and zero inputs 2017-08-29 15:21:55 +02:00
dp_fsp.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
dp_maddf.c MIPS: math-emu: <MADDF|MSUBF>.D: Fix accuracy (64-bit case) 2017-08-29 15:21:56 +02:00
dp_mul.c MIPS: math-emu: Fix code indentation 2016-05-13 14:02:23 +02:00
dp_rint.c MIPS: math-emu: RINT.<D|S>: Fix several problems by reimplementation 2017-08-29 15:21:56 +02:00
dp_simple.c MIPS: math-emu: Add IEEE Std 754-2008 ABS.fmt and NEG.fmt emulation 2016-01-20 00:39:20 +01:00
dp_sqrt.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
dp_sub.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
dp_tint.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00
dp_tlong.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00
dsemul.c sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h> 2017-03-02 08:42:38 +01:00
ieee754.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00
ieee754.h MIPS: math-emu: RINT.<D|S>: Fix several problems by reimplementation 2017-08-29 15:21:56 +02:00
ieee754d.c MIPS: math-emu: Cleanup coding style. 2014-05-23 15:11:15 +02:00
ieee754dp.c MIPS: math-emu: Always propagate sNaN payload in quieting 2016-05-13 14:02:11 +02:00
ieee754dp.h MIPS: math-emu: Add z argument macros 2016-05-13 14:02:22 +02:00
ieee754int.h MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Clean up "maddf_flags" enumeration 2017-08-29 15:21:56 +02:00
ieee754sp.c MIPS: math-emu: Fix m{add,sub}.s shifts 2016-05-13 14:02:23 +02:00
ieee754sp.h MIPS: math-emu: <MADDF|MSUBF>.S: Fix accuracy (32-bit case) 2017-08-29 15:21:56 +02:00
Makefile MIPS: math-emu: RINT.<D|S>: Fix several problems by reimplementation 2017-08-29 15:21:56 +02:00
me-debugfs.c MIPS: math-emu: Add FP emu debugfs stats for individual instructions 2017-08-29 15:21:57 +02:00
sp_2008class.c MIPS: math-emu: Add support for the MIPS R6 CLASS FPU instruction 2015-09-03 12:08:14 +02:00
sp_add.c MIPS: math-emu: Fix m{add,sub}.s shifts 2016-05-13 14:02:23 +02:00
sp_cmp.c MIPS: math-emu: Remove redundant code from NaN comparison 2015-04-08 01:09:38 +02:00
sp_div.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
sp_fdp.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00
sp_fint.c MIPS: math-emu: Cleanup coding style. 2014-05-23 15:11:15 +02:00
sp_flong.c MIPS: math-emu: Cleanup coding style. 2014-05-23 15:11:15 +02:00
sp_fmax.c MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of both infinite inputs 2017-08-29 15:21:55 +02:00
sp_fmin.c MIPS: math-emu: MINA.<D|S>: Fix some cases of infinity and zero inputs 2017-08-29 15:21:55 +02:00
sp_maddf.c MIPS: math-emu: <MADDF|MSUBF>.S: Fix accuracy (32-bit case) 2017-08-29 15:21:56 +02:00
sp_mul.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
sp_rint.c MIPS: math-emu: RINT.<D|S>: Fix several problems by reimplementation 2017-08-29 15:21:56 +02:00
sp_simple.c MIPS: math-emu: Add IEEE Std 754-2008 ABS.fmt and NEG.fmt emulation 2016-01-20 00:39:20 +01:00
sp_sqrt.c MIPS: math-emu: Reinstate sNaN quieting handlers 2015-04-08 01:09:31 +02:00
sp_sub.c MIPS: math-emu: Fix m{add,sub}.s shifts 2016-05-13 14:02:23 +02:00
sp_tint.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00
sp_tlong.c MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation 2016-01-20 00:39:20 +01:00