Commit Graph

6 Commits

Author SHA1 Message Date
Paul Mundt 9bbafce2ee 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>
2008-03-26 19:02:47 +09:00
David Howells 922a70d327 aout: move STACK_TOP[_MAX] to asm/processor.h
Move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're
required whether or not A.OUT format is available.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:29 -08:00
Paul Mundt 332fd57b92 sh: Bring the SH-5 FPU in line with the SH-4 FPU API.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:55 +09:00
Paul Mundt acb499f0dd sh: Move vsyscall_init() defs up one level.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:44 +09:00
Paul Mundt 76168c21b7 sh: More SH-5 cpuinfo tidying.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:43 +09:00
Paul Mundt af3c7dfe82 sh: Split out processor.h in to _32 and _64 variants.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:42 +09:00