diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2008-03-26 19:02:47 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-03-26 19:02:47 +0900 |
| commit | 9bbafce2eec190ef7e44b0eb1095ba17ce6ad3af (patch) | |
| tree | 8deae79efc43d39763bdba8ca9b670e6a1782859 /include/asm-sh/processor_64.h | |
| parent | 05dda977f2574c3341abef9b74c27d2b362e1e3a (diff) | |
sh: Fix occasional FPU register corruption under preempt.
Presently with preempt enabled there's the possibility to be preempted
after the TIF_USEDFPU test and the register save, leading to bogus
state post-__switch_to(). Use an explicit preempt_disable()/enable()
pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86
change.
Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/processor_64.h')
| -rw-r--r-- | include/asm-sh/processor_64.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-sh/processor_64.h b/include/asm-sh/processor_64.h index eda4bef448e..88a2edf8fa5 100644 --- a/include/asm-sh/processor_64.h +++ b/include/asm-sh/processor_64.h @@ -112,6 +112,7 @@ extern struct sh_cpuinfo cpu_data[]; #endif #define SR_IMASK 0x000000f0 +#define SR_FD 0x00008000 #define SR_SSTEP 0x08000000 #ifndef __ASSEMBLY__ |