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linux-stable/include/asm-ia64
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Peter Chubb 05062d96a2 [PATCH] ia64: fix floating-point preemption problem 
There've been reports of problems with CONFIG_PREEMPT=y and the high
floating point partition.  This is caused by the possibility of preemption
and rescheduling on a different processor while saving or restioirng the
high partition.

The only places where the FPU state is touched are in ptrace, in
switch_to(), and where handling a floating-point exception.  In switch_to()
preemption is off.  So it's only in trap.c and ptrace.c that we need to
prevent preemption.

Here is a patch that adds commentary to make the conditions clear, and adds
appropriate preempt_{en,dis}able() calls to make it so.  In trap.c I use
preempt_enable_no_resched(), as we're about to return to user space where
the preemption flag will be checked anyway.

Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08 16:21:14 -07:00
..
sn
[IS64-SGI] Set Altix error handling features
2005-05-17 13:53:21 -07:00
a.out.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
acpi-ext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
acpi.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
agp.h
[PATCH] AGP fix for Xen VMM
2005-06-07 12:35:43 -07:00
asmmacro.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atomic.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bitops.h
[IA64] fix fls()
2005-04-21 11:07:59 -07:00
break.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bug.h
[PATCH] remove all kernel BUGs
2005-05-01 08:59:01 -07:00
bugs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
byteorder.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cache.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cacheflush.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
checksum.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
compat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cputime.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
current.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cyclone.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
div64.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma-mapping.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
elf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
errno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fcntl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fpswa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
gcc_intrin.h
[IA64] fix fls()
2005-04-21 11:07:59 -07:00
hardirq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hdreg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hw_irq.h
[IA64] vector sharing (Large I/O system support)
2005-04-25 13:26:23 -07:00
ia32.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ia64regs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ide.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
intel_intrin.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
intrinsics.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
io.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ioctl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ioctls.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
iosapic.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
irq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kmap_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kregs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
linkage.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
local.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_dig.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_hpsim.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_hpzx1_swiotlb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_hpzx1.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_init.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_sn2.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mc146818rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mca_asm.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mca.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
meminit.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mman.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmu_context.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmzone.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
module.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
msgbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
msi.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
nodedata.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
numa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
numnodes.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
page.h
[PATCH] freepgt: hugetlb_free_pgd_range
2005-04-19 13:29:16 -07:00
pal.h
[IA64] multi-core/multi-thread identification
2005-04-25 13:25:06 -07:00
param.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
parport.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
patch.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
percpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
perfmon_default_smpl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
perfmon.h
[IA64] alternate perfmon handler
2005-05-18 16:14:30 -07:00
pgalloc.h
[IA64] re-enable preempt before page allocation for pgtable quicklist
2005-04-26 09:04:31 -07:00
pgtable.h
[IA64] Fill holes in FIXADDR_USER space with zero pages.
2005-06-08 10:58:21 -07:00
poll.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
posix_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
processor.h
[PATCH] ia64: fix floating-point preemption problem
2005-06-08 16:21:14 -07:00
ptrace_offsets.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ptrace.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rse.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwsem.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sal.h
[IA64] multi-core/multi-thread identification
2005-04-25 13:25:06 -07:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sections.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
segment.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
semaphore.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
serial.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
setup.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmparam.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sigcontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
siginfo.h
[PATCH] consolidate SIGEV_PAD_SIZE
2005-05-01 08:59:08 -07:00
signal.h
[PATCH] asm/signal.h unification
2005-05-04 07:33:15 -07:00
smp.h
[IA64] multi-core/multi-thread identification
2005-04-25 13:25:06 -07:00
socket.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sockios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
spinlock.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
stat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
statfs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
string.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
suspend.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
system.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
termbits.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
termios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
thread_info.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
timex.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlbflush.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
topology.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
uaccess.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ucontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unaligned.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unistd.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unwind.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
user.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ustack.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
vga.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
xor.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00