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4c75f84f2c
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Paul Mackerras 4c75f84f2c powerpc: Add compiler memory barrier to mtmsr macro 
On 32-bit non-Book E, local_irq_restore() turns into just mtmsr(),
which doesn't currently have a compiler memory barrier.  This means
that accesses to memory inside a local_irq_save/restore section,
or a spin_lock_irqsave/spin_unlock_irqrestore section on UP, can
be reordered by the compiler to occur outside that section.

To fix this, this adds a compiler memory barrier to mtmsr for both
32-bit and 64-bit.  Having a compiler memory barrier in mtmsr makes
sense because it will almost always be changing something about the
context in which memory accesses are done, so in general we don't want
memory accesses getting moved from one side of an mtmsr to the other.

With the barrier in mtmsr(), some of the explicit barriers in
hw_irq.h are now redundant, so this removes them.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-15 13:27:37 +10:00
..
iseries powerpc/iseries: Fix pci breakage due to bad dma_data initialization 2009-05-15 16:43:41 +10:00
8xx_immap.h
8253pit.h
abs_addr.h
agp.h
asm-compat.h
atomic.h asm-generic: rename atomic.h to atomic-long.h 2009-06-11 21:02:17 +02:00
auxvec.h
backlight.h
bitops.h
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
bootx.h powerpc: Fix warnings from make headers_check 2009-02-23 10:48:57 +11:00
btext.h
bug.h powerpc: Fix asm EMIT_BUG_ENTRY with !CONFIG_BUG 2008-12-16 15:53:23 +11:00
bugs.h
byteorder.h byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
cache.h
cacheflush.h
cell-pmu.h powerpc/oprofile: IBM CELL: add SPU event profiling support 2009-01-08 15:51:55 +01:00
cell-regs.h
checksum.h
clk_interface.h
code-patching.h powerpc: Unify opcode definitions and support 2009-02-23 10:48:56 +11:00
compat.h x86-64: seccomp: fix 32/64 syscall hole 2009-03-02 15:41:30 -08:00
cpm1.h
cpm2.h powerpc/cpm: Remove some cruft code and defines 2009-05-19 00:47:19 -05:00
cpm.h
cputable.h Merge commit 'origin/master' into next 2009-03-24 13:38:30 +11:00
cputhreads.h
cputime.h
current.h
dbdma.h
dbell.h powerpc: Add support for using doorbells for SMP IPI 2009-02-23 15:53:03 +11:00
dcr-generic.h
dcr-mmio.h
dcr-native.h powerpc/4xx: Extended DCR support v2 2008-12-21 14:21:15 +11:00
dcr-regs.h ibm_newemac: Fix EMAC soft reset on 460EX/GT 2008-10-08 15:27:14 -07:00
dcr.h powerpc: Const-qualify Device Node Argument to DCR Resource Extent API 2008-12-21 14:21:16 +11:00
delay.h
device.h powerpc and sparc: Introduce dev_archdata node accessors 2008-12-03 21:03:54 +11:00
disassemble.h ppc: Create disassemble.h to extract instruction fields 2008-12-31 16:52:21 +02:00
div64.h
dma-mapping.h powerpc: Add support for swiotlb on 32-bit 2009-06-09 16:49:18 +10:00
dma.h
edac.h
eeh_event.h
eeh.h powerpc/pci: Split pcibios_fixup_bus() into bus setup and device setup 2008-11-06 09:22:37 +11:00
elf.h powerpc: Fix up elf_read_implies_exec() usage 2009-05-21 15:44:21 +10:00
emergency-restart.h
emulated_ops.h powerpc: Keep track of emulated instructions 2009-05-21 15:44:26 +10:00
errno.h
exception.h powerpc: Make it possible to move the interrupt handlers away from the kernel 2008-09-15 11:08:08 -07:00
fb.h
fcntl.h
feature-fixups.h powerpc: Enable MMU feature sections for inline asm 2009-05-21 15:44:21 +10:00
firmware.h
fixmap.h powerpc: Minor cleanups of kernel virt address space definitions 2009-05-27 16:32:50 +10:00
floppy.h
fs_pd.h
fsl_gtm.h
fsl_lbc.h powerpc: fix fsl_upm nand driver modular build 2008-10-13 11:48:24 -05:00
ftrace.h powerpc32, ftrace: save and restore mcount regs with macro 2009-02-23 10:48:54 +11:00
futex.h powerpc: Fix data-corrupting bug in __futex_atomic_op 2009-04-15 15:23:53 +10:00
gpio.h
grackle.h
hardirq.h
heathrow.h
highmem.h mm: use debug_kmap_atomic 2009-04-01 08:59:14 -07:00
hugetlb.h mm: report the MMU pagesize in /proc/pid/smaps 2009-01-06 15:58:58 -08:00
hvcall.h powerpc: Make CMO paging space pool ID and page size available 2008-08-18 14:22:34 +10:00
hvconsole.h
hvcserver.h
hw_irq.h powerpc: Add compiler memory barrier to mtmsr macro 2009-06-15 13:27:37 +10:00
hydra.h
i8259.h
ibmebus.h
ide.h cleanup powerpc/include/asm/ide.h 2008-08-18 21:40:03 +02:00
immap_86xx.h
immap_cpm2.h powerpc: Update QE/CPM2 usb_ctlr structures for USB support 2008-11-08 12:39:02 -06:00
immap_qe.h powerpc: Update QE/CPM2 usb_ctlr structures for USB support 2008-11-08 12:39:02 -06:00
io-defs.h
io.h powerpc: Wire up /proc/vmallocinfo to our ioremap() 2009-03-11 17:10:14 +11:00
ioctl.h
ioctls.h powerpc: Add ioctls for RS485 mode control of serial drivers 2009-01-08 16:25:12 +11:00
iommu.h powerpc/cell: Extract duplicated IOPTE_* to <asm/iommu.h> 2009-06-15 13:26:19 +10:00
ipcbuf.h
ipic.h
irq_regs.h
irq.h powerpc: Separate the irq radix tree insertion and lookup 2008-09-15 11:08:44 -07:00
irqflags.h powerpc: Fix lockdep IRQ tracing bug 2008-08-18 14:22:34 +10:00
Kbuild byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
kdebug.h
kdump.h powerpc/32: Wire up the trampoline code for kdump 2008-12-23 15:13:29 +11:00
kexec.h powerpc/kdump: Use ppc_save_regs() in crash_setup_regs() 2009-01-08 16:25:17 +11:00
keylargo.h
kgdb.h
kmap_types.h
kprobes.h
kvm_44x.h KVM: ppc: move struct kvmppc_44x_tlbe into 44x-specific header 2009-03-24 11:02:55 +02:00
kvm_asm.h KVM: ppc: Add extra E500 exceptions 2009-03-24 11:02:59 +02:00
kvm_e500.h KVM: ppc: E500 core-specific code 2009-03-24 11:02:58 +02:00
kvm_host.h KVM: ppc: remove debug support broken by KVM debug rewrite 2009-03-24 11:03:01 +02:00
kvm_para.h
kvm_ppc.h KVM: ppc: remove debug support broken by KVM debug rewrite 2009-03-24 11:03:01 +02:00
kvm.h Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-03-26 16:11:41 -07:00
libata-portmap.h
linkage.h
lmb.h
local.h powerpc: Tell gcc when we clobber the carry in inline asm 2008-11-19 16:04:28 +11:00
lppaca.h powerpc: Shield code specific to 64-bit server processors 2009-06-09 16:47:38 +10:00
lv1call.h
machdep.h powerpc/irq: Move get_irq() comment into header 2009-05-21 15:43:59 +10:00
macio.h
mc146818rtc.h
mediabay.h
mman.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
mmu_context.h cpumask: Use mm_cpumask() wrapper instead of cpu_vm_mask 2009-03-24 13:47:29 +11:00
mmu-8xx.h powerpc/mm: Rework context management for CPUs with no hash table 2008-12-21 14:21:15 +11:00
mmu-40x.h powerpc/mm: Rework context management for CPUs with no hash table 2008-12-21 14:21:15 +11:00
mmu-44x.h powerpc/44x: Support for 256KB PAGE_SIZE 2009-02-14 14:40:04 -05:00
mmu-book3e.h Merge commit 'origin/master' into next 2009-03-30 14:04:53 +11:00
mmu-hash32.h
mmu-hash64.h powerpc/mm: Introduce early_init_mmu() on 64-bit 2009-03-24 13:47:34 +11:00
mmu.h powerpc: Shield code specific to 64-bit server processors 2009-06-09 16:47:38 +10:00
mmzone.h numa, cpumask: move numa_node_id default implementation to topology.h, fix 2009-03-19 12:51:25 +01:00
module.h powerpc/ppc32: ftrace, dynamic ftrace to handle modules 2008-11-20 10:52:53 -08:00
mpc6xx.h
mpc8xx.h
mpc52xx_psc.h ASoC: Add a few more mpc5200 PSC defines 2009-05-24 19:31:04 +01:00
mpc52xx.h powerpc/5200: add function to return external clock frequency 2009-03-11 09:36:26 -06:00
mpc512x.h
mpc8260.h
mpic.h powerpc: Add support for CoreInt delivery of interrupts on MPIC 2009-04-06 09:09:14 -05:00
msgbuf.h
msi_bitmap.h powerpc: Split-out common MSI bitmap logic into msi_bitmap.c 2008-08-20 16:34:57 +10:00
mutex.h powerpc: Optimise mutex 2008-11-19 16:04:58 +11:00
nvram.h
of_device.h powerpc: Remove include of linux/of_device.h from asm/of_device.h 2008-08-20 16:34:59 +10:00
of_platform.h of: make of_(un)register_platform_driver common code 2009-05-02 15:36:10 -07:00
ohare.h
oprofile_impl.h powerpc/oprofile: IBM CELL: add SPU event profiling support 2009-01-08 15:51:55 +01:00
paca.h Merge commit 'origin/master' into next 2009-06-12 16:53:38 +10:00
page_32.h asm-generic: rename page.h and uaccess.h 2009-06-11 21:02:17 +02:00
page_64.h asm-generic: rename page.h and uaccess.h 2009-06-11 21:02:17 +02:00
page.h powerpc/pseries: CMO unused page hinting 2009-05-21 15:43:58 +10:00
param.h
parport.h parport_pc: Fix build failure drivers/parport/parport_pc.c for powerpc 2009-04-14 08:48:50 -07:00
pasemi_dma.h
pci-bridge.h powerpc/pci: Cleanup some minor cruft 2009-05-21 15:44:24 +10:00
pci.h PCI/MSI: Use #ifdefs instead of weak functions 2009-03-19 19:29:26 -07:00
percpu.h
perf_counter.h perf_counter: powerpc: Implement generalized cache events for POWER processors 2009-06-11 16:48:37 +02:00
pgalloc-32.h powerpc: Use RCU based pte freeing mechanism for all powerpc 2008-12-03 20:46:35 +11:00
pgalloc-64.h powerpc: Use RCU based pte freeing mechanism for all powerpc 2008-12-03 20:46:35 +11:00
pgalloc.h powerpc: Use RCU based pte freeing mechanism for all powerpc 2008-12-03 20:46:35 +11:00
pgtable-ppc32.h powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. 2009-05-27 16:33:59 +10:00
pgtable-ppc64-4k.h powerpc/mm: Split the various pgtable-* headers based on MMU type 2009-03-20 15:56:57 +11:00
pgtable-ppc64-64k.h powerpc/mm: Split the various pgtable-* headers based on MMU type 2009-03-20 15:56:57 +11:00
pgtable-ppc64.h powerpc: Shield code specific to 64-bit server processors 2009-06-09 16:47:38 +10:00
pgtable.h powerpc/mm: Merge various PTE bits and accessors definitions 2009-03-24 13:47:33 +11:00
phyp_dump.h
pmac_feature.h
pmac_low_i2c.h
pmac_pfunc.h
pmc.h
pmi.h
poll.h
posix_types.h
ppc4xx.h
ppc_asm.h powerpc: Move VSX load/stores into ppc-opcode.h 2009-05-21 15:44:21 +10:00
ppc-opcode.h powerpc: Add 2.06 tlbie mnemonics 2009-05-21 15:44:21 +10:00
ppc-pci.h
processor.h powerpc: Sanitize stack pointer in signal handling code 2009-03-27 16:58:24 +11:00
prom.h powerpc: Add of_find_next_cache_node() 2008-12-21 14:21:14 +11:00
ps3.h ps3fb/vram: Extract common GPU stuff into <asm/ps3gpu.h> 2009-06-15 13:26:20 +10:00
ps3av.h powerpc/ps3: Make ps3av_set_video_mode mode ID signed 2009-03-11 17:10:17 +11:00
ps3fb.h powerpc: Remove duplicated #include's 2009-04-07 15:18:58 +10:00
ps3gpu.h ps3fb: Tear down FB setup during cleanup 2009-06-15 13:26:21 +10:00
ps3stor.h
pSeries_reconfig.h
pte-8xx.h powerpc/mm: Tweak PTE bit combination definitions 2009-03-24 13:47:33 +11:00
pte-40x.h powerpc/mm: Split the various pgtable-* headers based on MMU type 2009-03-20 15:56:57 +11:00
pte-44x.h powerpc/mm: Split the various pgtable-* headers based on MMU type 2009-03-20 15:56:57 +11:00
pte-common.h powerpc: Fix oops when loading modules 2009-04-07 15:19:01 +10:00
pte-fsl-booke.h powerpc/mm: Unify PTE_RPN_SHIFT and _PAGE_CHG_MASK definitions 2009-03-20 15:56:58 +11:00
pte-hash32.h powerpc/mm: Tweak PTE bit combination definitions 2009-03-24 13:47:33 +11:00
pte-hash64-4k.h powerpc/mm: Tweak PTE bit combination definitions 2009-03-24 13:47:33 +11:00
pte-hash64-64k.h powerpc/mm: Split the various pgtable-* headers based on MMU type 2009-03-20 15:56:57 +11:00
pte-hash64.h powerpc/mm: Add option for non-atomic PTE updates to ppc64 2009-03-24 13:47:34 +11:00
ptrace.h powerpc: Add PTRACE_SINGLEBLOCK support 2009-06-09 13:29:25 +10:00
qe_ic.h powerpc/qe: Fix few build errors with CONFIG_QUICC_ENGINE=n 2008-12-30 11:14:06 -06:00
qe.h powerpc/qe: update QE Serial Number 2009-05-19 00:50:24 -05:00
reg_8xx.h
reg_booke.h powerpc: Move SPEFSCR defines to common header 2009-04-02 10:41:31 -05:00
reg_fsl_emb.h
reg.h powerpc: Add compiler memory barrier to mtmsr macro 2009-06-15 13:27:37 +10:00
resource.h
rheap.h
rio.h
rtas.h powerpc/pseries: Scan for all events in rtasd 2009-04-07 15:18:59 +10:00
rtc.h
rwsem.h
scatterlist.h powerpc: Use sg->dma_length in sg_dma_len() macro on 32-bit 2009-05-21 15:44:25 +10:00
seccomp.h x86-64: seccomp: fix 32/64 syscall hole 2009-03-02 15:41:30 -08:00
sections.h Merge commit 'origin' 2008-10-15 11:31:54 +11:00
sembuf.h
serial.h
setjmp.h
setup.h
sfp-machine.h powerpc/math-emu: Change types to work on ppc64 2009-04-02 16:17:36 -05:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h signals: demultiplexing SIGTRAP signal 2008-09-23 13:26:52 +02:00
signal.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
smp.h powerpc: Provide a separate handler for each IPI action 2008-11-19 16:05:06 +11:00
smu.h
socket.h net: new user space API for time stamping of incoming and outgoing packets 2009-02-15 22:43:33 -08:00
sockios.h
sparsemem.h
spinlock_types.h
spinlock.h Allow rwlocks to re-enable interrupts 2009-04-02 19:05:11 -07:00
spu_csa.h
spu_info.h powerpc: Fix warnings from make headers_check 2009-02-23 10:48:57 +11:00
spu_priv1.h
spu.h powerpc/cell: Bitops work on unsigned longs 2009-01-08 16:25:12 +11:00
sstep.h
stat.h
statfs.h PowerPC: Use <asm-generic/statfs.h> 2008-09-06 19:30:15 +01:00
string.h
suspend.h pm: cleanup includes 2009-04-01 08:59:16 -07:00
swab.h powerpc: Fix warnings from make headers_check 2009-02-23 10:48:57 +11:00
swiotlb.h powerpc: Add support for swiotlb on 32-bit 2009-06-09 16:49:18 +10:00
synch.h powerpc: Optimise smp_wmb 2008-11-19 16:04:55 +11:00
syscall.h
syscalls.h
systbl.h powerpc: Wire up sys_rt_tgsigqueueinfo 2009-06-15 13:27:36 +10:00
system.h powerpc: Set init_bootmem_done on NUMA platforms as well 2009-06-09 16:43:04 +10:00
tce.h
termbits.h
termios.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
thread_info.h Merge commit 'jwb/next' into next 2009-03-03 13:30:03 +11:00
time.h powerpc: Eliminate unused do_gtod variable 2008-11-06 09:49:28 +11:00
timex.h
tlb.h
tlbflush.h powerpc/mm: Split low level tlb invalidate for nohash processors 2008-12-21 14:21:16 +11:00
topology.h cpumask: remove node_to_first_cpu 2009-03-30 22:05:12 +10:30
tsi108_irq.h
tsi108_pci.h
tsi108.h
types.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
uaccess.h
ucc_fast.h
ucc_slow.h
ucc.h
ucontext.h
udbg.h powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF 2009-03-11 17:11:34 +11:00
uic.h
unaligned.h
uninorth.h
unistd.h powerpc: Wire up sys_rt_tgsigqueueinfo 2009-06-15 13:27:36 +10:00
user.h
vdso_datapage.h powerpc: Improve resolution of VDSO clock_gettime 2008-11-06 09:49:22 +11:00
vdso.h
vga.h
vio.h
xilinx_intc.h
xilinx_pci.h powerpc/virtex: Add support for Xilinx PCI host bridge 2009-06-06 10:14:22 -06:00
xmon.h
xor.h