linux/arch
Ralf Baechle 51d943f07d MIPS: Fix for warning from FPU emulation code
The default implementation of 'cpu_has_fpu' macro calls
smp_processor_id() which causes this warning to be printed when
preemption is enabled:

[    4.664000] Algorithmics/MIPS FPU Emulator v1.5
[    4.676000] BUG: using smp_processor_id() in preemptible [00000000] code: ini
[    4.700000] caller is fpu_emulator_cop1Handler+0x434/0x27b8

This problem got introduced in November 2009 by
af1d2af877ef6c36990671bc86a5b9c5bb50b1da (lmo) [MIPS: Fix emulation of
64-bit FPU on 64-bit CPUs.] rsp.  da0bac3341
(kernel.org) [MIPS: Fix emulation of 64-bit FPU on FPU-less 64-bit CPUs.]
in 2.6.32.

Fixed by rewriting cop1_64bit() to return a constant whenever possible
but most importantly avoid the use pf cpu_has_fpu entirely.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Jayachandran C <jchandra@broadcom.com>
Initial-patch-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: https://patchwork.linux-mips.org/patch/4225/
2012-12-13 18:15:27 +01:00
..
alpha Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-11-18 09:13:48 -10:00
arm Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux 2012-11-23 11:59:26 -10:00
arm64 arm64: Distinguish between user and kernel XN bits 2012-11-16 15:50:25 +00:00
avr32 Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
blackfin Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
c6x Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
cris Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
frv frv: fix the broken preempt 2012-11-02 12:08:25 -04:00
h8300 h8300: add missing L1_CACHE_SHIFT 2012-11-09 06:41:47 +01:00
hexagon Hexagon: Copyright marking changes 2012-10-18 17:07:21 -05:00
ia64 revert "mm: fix-up zone present pages" 2012-11-16 14:33:04 -08:00
m32r Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
m68k m68k: fix sigset_t accessor functions 2012-11-18 10:32:16 +01:00
microblaze Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
mips MIPS: Fix for warning from FPU emulation code 2012-12-13 18:15:27 +01:00
mn10300 UAPI: Make arch/mn10300/include/uapi/asm/setup.h non-empty 2012-10-17 12:32:35 +01:00
openrisc Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
parisc [PARISC] fix user-triggerable panic on parisc 2012-11-22 09:33:12 +00:00
powerpc powerpc/eeh: Do not invalidate PE properly 2012-11-26 09:14:16 +11:00
s390 s390/mm: have 16 byte aligned struct pages 2012-11-13 11:03:09 +01:00
score Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
sh UAPI: Make arch/sh/include/uapi/asm/hw_breakpoint.h non-empty 2012-10-17 12:32:35 +01:00
sparc Device tree regression fix for v3.7 2012-11-23 12:36:06 -10:00
tile arch/tile: avoid build warnings from duplicate ELF_R_xxx #defines 2012-10-23 10:22:48 -04:00
um Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-13 10:05:52 +09:00
unicore32 arch/unicore32: remove CONFIG_EXPERIMENTAL 2012-11-09 17:30:10 +08:00
x86 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-11-23 20:03:14 -10:00
xtensa xtensa: switch to generic sys_execve() 2012-10-25 15:00:44 -07:00
.gitignore
Kconfig Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00