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dbee8a0affd5e6eaa5d7c816c4bc233f6f110f50
ubports_kernel_google_msm/arch/x86/include/asm
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Roland Dreier dbee8a0aff x86: remove 32-bit versions of readq()/writeq() 
The presense of a writeq() implementation on 32-bit x86 that splits the
64-bit write into two 32-bit writes turns out to break the mpt2sas driver
(and in general is risky for drivers as was discussed in
<http://lkml.kernel.org/r/adaab6c1h7c.fsf@cisco.com>).  To fix this,
revert 2c5643b1c5 ("x86: provide readq()/writeq() on 32-bit too") and
follow-on cleanups.

This unfortunately leads to pushing non-atomic definitions of readq() and
write() to various x86-only drivers that in the meantime started using the
definitions in the x86 version of <asm/io.h>.  However as discussed
exhaustively, this is actually the right thing to do, because the right
way to split a 64-bit transaction is hardware dependent and therefore
belongs in the hardware driver (eg mpt2sas needs a spinlock to make sure
no other accesses occur in between the two halves of the access).

Build tested on 32- and 64-bit x86 allmodconfig.

Link: http://lkml.kernel.org/r/x86-32-writeq-is-broken@mdm.bga.com
Acked-by: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Kashyap Desai <Kashyap.Desai@lsi.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Acked-by: James Bottomley <James.Bottomley@parallels.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25 08:39:44 -07:00
..
uv
x86: Fix UV BAU for non-consecutive nasids
2011-05-12 23:45:42 +02:00
visws
…
xen
xen/p2m/m2p/gnttab: Support GNTMAP_host_map in the M2P override.
2011-04-18 11:10:27 -04:00
a.out-core.h
…
a.out.h
…
acpi.h
x86, NUMA: trivial cleanups
2011-05-02 14:18:52 +02:00
aes.h
…
agp.h
…
alternative-asm.h
x86, alternative: Add altinstruction_entry macro
2011-05-17 15:40:25 -07:00
alternative.h
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-05-19 17:55:12 -07:00
amd_iommu_proto.h
x86/amd-iommu: Use threaded interupt handler
2011-05-10 11:07:58 +02:00
amd_iommu_types.h
Merge branches 'dma-debug/next', 'amd-iommu/command-cleanups', 'amd-iommu/ats' and 'amd-iommu/extended-features' into iommu/2.6.40
2011-05-10 10:25:23 +02:00
amd_iommu.h
…
amd_nb.h
x86, NUMA: trivial cleanups
2011-05-02 14:18:52 +02:00
apb_timer.h
…
apic.h
x86, apic: Make apic drivers static
2011-05-22 11:48:04 +02:00
apicdef.h
x86, apic: Fix spurious error interrupts triggering on all non-boot APs
2011-05-16 13:48:25 +02:00
apm.h
…
arch_hweight.h
…
asm-offsets.h
…
asm.h
…
atomic64_32.h
…
atomic64_64.h
…
atomic.h
…
auxvec.h
…
bios_ebda.h
x86: Better comments for get_bios_ebda()
2011-04-29 14:13:15 -07:00
bitops.h
bitops: remove minix bitops from asm/bitops.h
2011-03-23 19:46:22 -07:00
bitsperlong.h
…
boot.h
…
bootparam.h
…
bug.h
…
bugs.h
…
byteorder.h
…
cache.h
…
cacheflush.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
calgary.h
…
calling.h
…
ce4100.h
…
checksum_32.h
…
checksum_64.h
…
checksum.h
…
cmpxchg_32.h
…
cmpxchg_64.h
…
cmpxchg.h
…
compat.h
…
cpu.h
…
cpufeature.h
Merge branch 'x86-smep-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-05-19 18:10:17 -07:00
cpumask.h
…
cputime.h
…
current.h
…
debugreg.h
…
delay.h
…
desc_defs.h
…
desc.h
…
device.h
…
div64.h
…
dma-mapping.h
…
dma.h
x86, NUMA: Enable emulation on 32bit too
2011-05-02 17:24:48 +02:00
dmi.h
…
dwarf2.h
…
e820.h
…
edac.h
…
efi.h
x86, efi: Consolidate EFI nx control
2011-05-09 12:14:29 -07:00
elf.h
…
emergency-restart.h
…
entry_arch.h
…
errno.h
…
fb.h
…
fcntl.h
…
fixmap.h
…
floppy.h
…
frame.h
…
ftrace.h
ftrace/x86: mcount offset calculation
2011-05-16 14:55:57 -04:00
futex.h
…
gart.h
x86, gart: Set DISTLBWALKPRB bit always
2011-04-18 09:26:48 -07:00
genapic.h
…
geode.h
…
gpio.h
…
hardirq.h
…
highmem.h
…
hpet.h
…
hugetlb.h
…
hw_breakpoint.h
…
hw_irq.h
…
hypertransport.h
…
hyperv.h
…
hypervisor.h
…
i387.h
x86-32, fpu: Fix FPU exception handling on non-SSE systems
2011-04-06 16:53:01 -07:00
i8253.h
clocksource: convert x86 to generic i8253 clocksource
2011-05-14 10:29:48 +01:00
i8259.h
…
ia32_unistd.h
…
ia32.h
…
idle.h
…
inat_types.h
…
inat.h
…
init.h
…
insn.h
…
inst.h
…
intel_scu_ipc.h
…
io_apic.h
x86, ioapic: Consolidate gsi routing info into 'struct ioapic'
2011-05-20 13:41:01 +02:00
io.h
x86: remove 32-bit versions of readq()/writeq()
2011-05-25 08:39:44 -07:00
ioctl.h
…
ioctls.h
…
iomap.h
…
iommu_table.h
…
iommu.h
…
ipcbuf.h
…
ipi.h
…
irq_controller.h
…
irq_regs.h
…
irq_remapping.h
…
irq_vectors.h
…
irq.h
…
irqflags.h
…
ist.h
…
jump_label.h
jump label: Add _ASM_ALIGN for x86 and x86_64
2011-04-04 13:42:51 -04:00
Kbuild
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kdebug.h
x86, dumpstack: Correct stack dump info when frame pointer is available
2011-03-18 10:51:42 +01:00
kexec.h
…
kgdb.h
…
kmap_types.h
…
kmemcheck.h
…
kprobes.h
…
kvm_emulate.h
KVM: x86 emulator: consolidate segment accessors
2011-05-22 08:47:39 -04:00
kvm_host.h
KVM: VMX: Cache vmcs segment fields
2011-05-22 08:47:45 -04:00
kvm_para.h
…
kvm.h
…
ldt.h
…
lguest_hcall.h
…
lguest.h
…
linkage.h
x86: Get rid of asmregparm
2011-05-24 14:33:35 +02:00
local64.h
…
local.h
…
mach_timer.h
…
mach_traps.h
…
math_emu.h
…
mc146818rtc.h
…
mca_dma.h
…
mca.h
…
mce.h
x86, mce: Drop the default decoding notifier
2011-04-21 11:35:10 +02:00
memblock.h
…
microcode.h
…
mman.h
…
mmconfig.h
…
mmu_context.h
…
mmu.h
x86: add context tag to mark mm when running a task in 32-bit compatibility mode
2011-03-23 16:36:52 -04:00
mmx.h
…
mmzone_32.h
x86-32, NUMA: Replace srat_32.c with srat.c
2011-05-02 14:18:53 +02:00
mmzone_64.h
x86-64, NUMA: Remove custom phys_to_nid() implementation
2011-04-01 11:15:12 +02:00
mmzone.h
…
module.h
x86, cpu: Move AMD Elan Kconfig under "Processor family"
2011-04-08 13:01:25 -07:00
mpspec_def.h
…
mpspec.h
…
mrst-vrtc.h
…
mrst.h
…
msgbuf.h
…
mshyperv.h
…
msidef.h
…
msr-index.h
KVM: SVM: Implement infrastructure for TSC_RATE_MSR
2011-05-11 07:57:04 -04:00
msr.h
…
mtrr.h
…
mutex_32.h
…
mutex_64.h
…
mutex.h
…
mwait.h
…
nmi.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
nops.h
x86, cpu: Clean up and unify the NOP selection infrastructure
2011-04-18 16:40:21 -07:00
numa_32.h
x86, NUMA: Move NUMA init logic from numa_64.c to numa.c
2011-05-02 14:18:53 +02:00
numa_64.h
x86, NUMA: Move NUMA init logic from numa_64.c to numa.c
2011-05-02 14:18:53 +02:00
numa.h
x86, NUMA: Make numa_init_array() static
2011-05-02 17:24:48 +02:00
numaq.h
x86-32, NUMA: Update numaq to use new NUMA init protocol
2011-05-02 14:18:53 +02:00
olpc_ofw.h
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olpc.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
page_32_types.h
…
page_32.h
…
page_64_types.h
…
page_64.h
…
page_types.h
…
page.h
…
param.h
…
paravirt_types.h
…
paravirt.h
…
parport.h
…
pat.h
…
pci_64.h
…
pci_x86.h
…
pci-direct.h
…
pci-functions.h
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pci.h
x86/PCI: Remove dma32_reserve_bootmem
2011-05-10 15:43:32 -07:00
percpu.h
Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2011-05-24 11:53:42 -07:00
perf_event_p4.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
perf_event.h
…
pgalloc.h
…
pgtable_32_types.h
…
pgtable_32.h
…
pgtable_64_types.h
…
pgtable_64.h
…
pgtable_types.h
x86,xen: introduce x86_init.mapping.pagetable_reserve
2011-05-12 13:05:04 -04:00
pgtable-2level_types.h
…
pgtable-2level.h
…
pgtable-3level_types.h
…
pgtable-3level.h
x86: Flush TLB if PGD entry is changed in i386 PAE mode
2011-03-18 11:44:01 +01:00
pgtable.h
…
poll.h
…
posix_types_32.h
…
posix_types_64.h
…
posix_types.h
…
prctl.h
…
probe_roms.h
…
processor-cyrix.h
…
processor-flags.h
x86, cpu: Add SMEP CPU feature in CR4
2011-05-17 21:06:42 -07:00
processor.h
…
prom.h
…
proto.h
…
ptrace-abi.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
ptrace.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
pvclock-abi.h
…
pvclock.h
…
reboot_fixups.h
…
reboot.h
…
required-features.h
…
resource.h
…
resume-trace.h
…
rio.h
…
rtc.h
…
rwlock.h
…
rwsem.h
…
scatterlist.h
…
seccomp_32.h
…
seccomp_64.h
…
seccomp.h
…
sections.h
…
segment.h
…
sembuf.h
…
serial.h
…
setup_arch.h
…
setup.h
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-05-19 18:08:06 -07:00
shmbuf.h
…
shmparam.h
…
sigcontext32.h
…
sigcontext.h
…
sigframe.h
…
siginfo.h
…
signal.h
…
smp.h
…
smpboot_hooks.h
…
socket.h
…
sockios.h
…
sparsemem.h
…
spinlock_types.h
…
spinlock.h
…
stackprotector.h
…
stacktrace.h
x86: Remove warning and warning_symbol from struct stacktrace_ops
2011-05-12 15:31:28 +02:00
stat.h
…
statfs.h
…
string_32.h
…
string_64.h
…
string.h
…
suspend_32.h
…
suspend_64.h
…
suspend.h
…
svm.h
…
swab.h
…
swiotlb.h
…
sync_bitops.h
…
sys_ia32.h
…
syscall.h
…
syscalls.h
…
system.h
x86: Demacro CONFIG_PARAVIRT cpu accessors
2011-04-24 13:20:36 +02:00
tce.h
…
termbits.h
…
termios.h
…
thread_info.h
mm: NUMA aware alloc_thread_info_node()
2011-03-22 17:44:01 -07:00
time.h
…
timer.h
…
timex.h
…
tlb.h
…
tlbflush.h
…
topology.h
x86, NUMA: Make 32bit use common NUMA init path
2011-05-02 17:24:48 +02:00
trampoline.h
…
traps.h
…
tsc.h
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
types.h
remove dma64_addr_t
2011-03-23 19:47:18 -07:00
uaccess_32.h
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
uaccess_64.h
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
uaccess.h
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
ucontext.h
…
unaligned.h
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unistd_32.h
net: Add sendmmsg socket system call
2011-05-05 11:10:14 -07:00
unistd_64.h
net: Add sendmmsg socket system call
2011-05-05 11:10:14 -07:00
unistd.h
…
user32.h
…
user_32.h
…
user_64.h
…
user.h
…
vdso.h
…
vga.h
…
vgtod.h
…
virtext.h
…
vm86.h
…
vmx.h
…
vsyscall.h
…
x2apic.h
x86, x2apic: Move the common bits to x2apic.h
2011-05-20 13:41:11 +02:00
x86_init.h
x86,xen: introduce x86_init.mapping.pagetable_reserve
2011-05-12 13:05:04 -04:00
xcr.h
…
xor_32.h
…
xor_64.h
…
xor.h
…
xsave.h
…