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Hugh Dickins 292f86f005 [POWERPC] Make mmiowb's io_sync preempt safe ... If mmiowb() is always used prior to releasing spinlock as Doc suggests, then it's safe against preemption; but I'm not convinced that's always the case. If preemption occurs between sync and get_paca()->io_sync = 0, I believe there's no problem. But in the unlikely event that gcc does the store relative to another register than r13 (as it did with current), then there's a small danger of setting another cpu's io_sync to 0, after it had just set it to 1. Rewrite ppc64 mmiowb to prevent that. The remaining io_sync assignments in io.h all get_paca()->io_sync = 1, which is harmless even if preempted to the wrong cpu (the context switch itself syncs); and those in spinlock.h are while preemption is disabled. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>		18 years ago
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iseries	[POWERPC] Fix up after irq changes	19 years ago
8253pit.h	…
Kbuild	[HEADERS] One line per header in Kbuild files to reduce conflicts	19 years ago
a.out.h	…
abs_addr.h	…
agp.h	…
asm-compat.h	[POWERPC] Support feature fixups in vdso's	18 years ago
atomic.h	…
auxvec.h	…
backlight.h	…
bitops.h	…
bootx.h	…
btext.h	…
bug.h	[PATCH] Let WARN_ON/WARN_ON_ONCE return the condition	19 years ago
bugs.h	…
byteorder.h	…
cache.h	…
cacheflush.h	…
checksum.h	…
compat.h	…
cputable.h	[POWERPC] Cell timebase bug workaround	18 years ago
cputime.h	…
current.h	[POWERPC] Make current preempt-safe	18 years ago
dbdma.h	…
delay.h	…
div64.h	…
dma-mapping.h	…
dma.h	…
eeh.h	[POWERPC] Fix MMIO ops to provide expected barrier behaviour	19 years ago
eeh_event.h	…
elf.h	…
emergency-restart.h	…
errno.h	…
fcntl.h	…
firmware.h	[POWERPC] Support feature fixups in vdso's	18 years ago
floppy.h	…
fs_pd.h	POWERPC: Get rid of remapping the whole immr	19 years ago
futex.h	[POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().	19 years ago
grackle.h	…
hardirq.h	…
heathrow.h	…
hvcall.h	[POWERPC] powerpc: Instrument Hypervisor Calls	19 years ago
hvconsole.h	…
hvcserver.h	…
hw_irq.h	…
i8259.h	[POWERPC] Fix CHRP platforms with only 8259	18 years ago
ibmebus.h	IRQ: Use the new typedef for interrupt handler function pointers	19 years ago
ide.h	[POWERPC] clean up ide io accessors	19 years ago
immap_86xx.h	…
immap_qe.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
io.h	[POWERPC] Make mmiowb's io_sync preempt safe	18 years ago
ioctl.h	…
ioctls.h	…
iommu.h	[POWERPC] Use 4kB iommu pages even on 64kB-page systems	18 years ago
ipc.h	…
ipcbuf.h	…
ipic.h	[POWERPC] Fix up after irq changes	19 years ago
irq.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
irq_regs.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
irqflags.h	…
kdebug.h	…
kdump.h	[POWERPC] kdump: Support kernels having 64k page size.	19 years ago
kexec.h	…
keylargo.h	…
kmap_types.h	…
kprobes.h	[PATCH] kprobes: handle symbol resolution when <module:.symbol> is specified	19 years ago
linkage.h	…
lmb.h	…
local.h	…
lppaca.h	…
machdep.h	[POWERPC] Fix up after irq changes	19 years ago
macio.h	…
mc146818rtc.h	…
mediabay.h	…
mman.h	…
mmu.h	…
mmu_context.h	…
mmzone.h	…
module.h	…
mpc85xx.h	POWERPC: Add support for the mpc8560 eval board	19 years ago
mpc86xx.h	…
mpic.h	[POWERPC] Fix up after irq changes	19 years ago
msgbuf.h	…
mutex.h	…
namei.h	…
nvram.h	…
of_device.h	…
ohare.h	…
oprofile_impl.h	[POWERPC] Fix oprofile support for e500 in arch/powerpc	18 years ago
pSeries_reconfig.h	…
paca.h	Merge branch 'linux-2.6'	19 years ago
page.h	[POWERPC] Remove DISCONTIGMEM cruft from page.h	19 years ago
page_32.h	…
page_64.h	…
param.h	…
parport.h	…
pci-bridge.h	Remove all inclusions of <linux/config.h>	19 years ago
pci.h	…
percpu.h	…
pgalloc.h	…
pgtable-4k.h	[PATCH] Standardize pxx_page macros	19 years ago
pgtable-64k.h	…
pgtable.h	[PATCH] Standardize pxx_page macros	19 years ago
pmac_feature.h	…
pmac_low_i2c.h	…
pmac_pfunc.h	…
pmc.h	[POWERPC] Fix oprofile support for e500 in arch/powerpc	18 years ago
poll.h	…
posix_types.h	…
ppc-pci.h	[POWERPC] EEH: enable MMIO/DMA on frozen slot	19 years ago
ppc_asm.h	[POWERPC] Cell timebase bug workaround	18 years ago
processor.h	…
prom.h	[POWERPC] Fix device_is_compatible() const warning	18 years ago
ptrace.h	[PATCH] Add regs_return_value() helper	19 years ago
qe.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
qe_ic.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
reg.h	[POWERPC] Cell timebase bug workaround	18 years ago
reg_8xx.h	…
resource.h	…
rtas.h	…
rtc.h	…
rwsem.h	…
scatterlist.h	…
seccomp.h	…
sections.h	…
semaphore.h	…
sembuf.h	…
serial.h	…
setup.h	…
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	…
smp.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
smu.h	…
socket.h	…
sockios.h	…
sparsemem.h	…
spinlock.h	[PATCH] Directed yield: direct yield of spinlocks for powerpc	19 years ago
spinlock_types.h	…
spu.h	[POWERPC] spufs: add infrastructure for finding elf objects	19 years ago
spu_csa.h	…
spu_priv1.h	…
sstep.h	…
stat.h	…
statfs.h	…
string.h	…
synch.h	…
syscalls.h	…
systbl.h	…
system.h	[POWERPC] Fix rmb() for e500-based machines it	18 years ago
tce.h	[POWERPC] Use 4kB iommu pages even on 64kB-page systems	18 years ago
termbits.h	…
termios.h	…
thread_info.h	…
time.h	[POWERPC] Cell timebase bug workaround	18 years ago
timex.h	[POWERPC] Cell timebase bug workaround	18 years ago
tlb.h	…
tlbflush.h	…
todc.h	…
topology.h	[PATCH] sched: introduce child field in sched_domain	19 years ago
tsi108.h	…
tsi108_irq.h	…
types.h	…
uaccess.h	…
ucc.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
ucc_fast.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
ucc_slow.h	[POWERPC] Add QUICC Engine (QE) infrastructure	19 years ago
ucontext.h	…
udbg.h	…
unaligned.h	…
uninorth.h	…
unistd.h	[PATCH] rename the provided execve functions to kernel_execve	19 years ago
user.h	…
vdso.h	…
vdso_datapage.h	…
vga.h	…
vio.h	…
xmon.h	[POWERPC] Fix xmon=off and cleanup xmon initialisation	19 years ago
xor.h	…