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Linus Torvalds a200dcb346 virtio: barrier rework+fixes 
This adds a new kind of barrier, and reworks virtio and xen
 to use it.
 Plus some fixes here and there.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio barrier rework+fixes from Michael Tsirkin:
 "This adds a new kind of barrier, and reworks virtio and xen to use it.

  Plus some fixes here and there"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (44 commits)
  checkpatch: add virt barriers
  checkpatch: check for __smp outside barrier.h
  checkpatch.pl: add missing memory barriers
  virtio: make find_vqs() checkpatch.pl-friendly
  virtio_balloon: fix race between migration and ballooning
  virtio_balloon: fix race by fill and leak
  s390: more efficient smp barriers
  s390: use generic memory barriers
  xen/events: use virt_xxx barriers
  xen/io: use virt_xxx barriers
  xenbus: use virt_xxx barriers
  virtio_ring: use virt_store_mb
  sh: move xchg_cmpxchg to a header by itself
  sh: support 1 and 2 byte xchg
  virtio_ring: update weak barriers to use virt_xxx
  Revert "virtio_ring: Update weak barriers to use dma_wmb/rmb"
  asm-generic: implement virt_xxx memory barriers
  x86: define __smp_xxx
  xtensa: define __smp_xxx
  tile: define __smp_xxx
  ...
2016-01-18 16:44:24 -08:00
..
xen xen/events: Support event channel rebind on ARM 2015-08-20 12:24:15 +01:00
acenv.h ARM64 / ACPI: Get RSDP and ACPI boot-time tables 2015-03-25 11:49:30 +00:00
acpi.h Power management and ACPI updates for v4.4-rc1 2015-11-04 18:10:13 -08:00
alternative.h arm64: mm: fold alternatives into .init 2015-12-10 17:36:08 +00:00
arch_gicv3.h irqchip/gic-v3: Add missing include for barrier.h 2015-12-10 19:13:26 +01:00
arch_timer.h arm64: fix missing linux/bug.h include in asm/arch_timer.h 2015-01-07 11:40:59 +00:00
arm-cci.h arm-cci: Get rid of secure transactions for PMU driver 2015-03-27 13:44:35 +00:00
asm-offsets.h
assembler.h arm64: Add this_cpu_ptr() assembler macro for use in entry.S 2015-12-10 12:08:09 +00:00
atomic.h arm64 updates for 4.4: 2015-11-04 14:47:13 -08:00
atomic_ll_sc.h arm64: cmpxchg_dbl: fix return value type 2015-11-05 17:29:40 +00:00
atomic_lse.h arm64: cmpxchg_dbl: fix return value type 2015-11-05 17:29:40 +00:00
barrier.h arm64: define __smp_xxx 2016-01-12 20:46:53 +02:00
bitops.h arch,arm64: Convert smp_mb__*() 2014-04-18 11:40:33 +02:00
bitrev.h ARM: 8189/1: arm64:add bitrev.h file to support rbit instruction 2014-12-22 16:47:32 +00:00
boot.h arm64: use fixmap region for permanent FDT mapping 2015-06-02 16:31:33 +01:00
bug.h arm64/BUG: Use BRK instruction for generic BUG traps 2015-07-27 11:08:42 +01:00
cache.h arm64: Increase the max granular size 2015-10-28 19:09:17 +00:00
cacheflush.h arm64: Use PoU cache instr for I/D coherency 2015-12-17 11:07:13 +00:00
cachetype.h arm64: cachetype: fix definitions of ICACHEF_* flags 2015-10-28 18:32:12 +00:00
cmpxchg.h arm64: cmpxchg: Don't incldue linux/mmdebug.h 2015-12-10 17:36:09 +00:00
compat.h arm64: do not include ptrace.h from compat.h 2015-11-17 13:24:36 +00:00
compiler.h
cpu.h arm64: Consolidate CPU Sanity check to CPU Feature infrastructure 2015-10-21 15:35:56 +01:00
cpu_ops.h ARM64: kernel: unify ACPI and DT cpus initialization 2015-05-19 16:09:29 +01:00
cpufeature.h arm64 fixes: 2015-11-27 11:09:59 -08:00
cpuidle.h arm64: kernel: rename __cpu_suspend to keep it aligned with arm 2015-06-19 14:46:39 +01:00
cputype.h arm64 updates for 4.4: 2015-11-04 14:47:13 -08:00
dcc.h ARM64: TTY: hvc_dcc: Add support for ARM64 dcc 2015-10-04 17:49:27 +01:00
debug-monitors.h arm64: debug: rename enum debug_el to avoid symbol collision 2015-07-27 18:36:54 +01:00
device.h arm64: introduce is_device_dma_coherent 2014-12-04 12:41:49 +00:00
dma-mapping.h arm64: simplify dma_get_ops 2015-11-17 12:05:18 +00:00
dmi.h arm64: dmi: Add SMBIOS/DMI support 2014-11-05 09:03:25 +01:00
efi.h arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM 2015-12-09 16:57:23 +00:00
elf.h mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE 2015-04-14 16:49:05 -07:00
esr.h arm64/debug: Add missing #includes 2015-07-27 11:08:42 +01:00
exception.h arm64: Add __exception_irq_entry definition for function graph 2015-08-12 17:23:45 +01:00
exec.h
fb.h
fixmap.h arm64: Simplify NR_FIX_BTMAPS calculation 2015-10-19 17:54:07 +01:00
fpsimd.h arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
fpsimdmacros.h arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros 2015-01-29 17:24:39 +00:00
ftrace.h arm64: ftrace: fix a stack tracer's output under function graph tracer 2015-12-21 17:26:02 +00:00
futex.h arm64: atomics: prefetch the destination word for write prior to stxr 2015-07-27 15:28:53 +01:00
hardirq.h arm64: Remove ununsed set_irq_flags 2015-09-16 16:53:39 +02:00
hugetlb.h arm64: hugetlb: add support for PTE contiguous bit 2015-12-21 17:26:00 +00:00
hw_breakpoint.h arm64: debug: Treat the BRPs/WRPs as unsigned 2015-11-26 18:08:36 +00:00
hwcap.h arm64/HWCAP: Use system wide safe values 2015-10-21 15:35:58 +01:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
insn.h arm64: insn: Add aarch64_{get,set}_branch_offset 2015-06-03 15:43:24 +01:00
io.h Revert "arm64: ioremap: add ioremap_cache macro" 2015-10-13 16:18:17 +01:00
irq.h arm64: remove irq_count and do_softirq_own_stack() 2015-12-21 17:26:01 +00:00
irq_work.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
irqflags.h arm64: Add macros to manage processor debug state 2014-02-26 11:16:25 +00:00
jump_label.h locking/static_keys: Add a new static_key interface 2015-08-03 11:34:15 +02:00
kasan.h arm64: kasan: fix issues reported by sparse 2015-10-13 14:54:42 +01:00
Kbuild mm: clean up per architecture MM hook header files 2015-07-17 16:39:53 -07:00
kernel-pgtable.h arm64: Calculate size for idmap_pg_dir at compile time 2015-10-19 17:53:26 +01:00
kgdb.h arm64: Fix typos in KGDB macros 2014-09-25 15:35:41 +01:00
kvm_arm.h arm64: KVM: Add support for 16-bit VMID 2015-12-18 10:15:12 +00:00
kvm_asm.h arm64: KVM: Turn system register numbers to an enum 2015-12-14 11:30:43 +00:00
kvm_coproc.h arm64: KVM: common infrastructure for handling AArch32 CP14/CP15 2014-07-11 04:57:44 -07:00
kvm_emulate.h arm64: KVM: Turn system register numbers to an enum 2015-12-14 11:30:43 +00:00
kvm_host.h arm64: KVM: Turn system register numbers to an enum 2015-12-14 11:30:43 +00:00
kvm_mmio.h arm64: KVM: Turn system register numbers to an enum 2015-12-14 11:30:43 +00:00
kvm_mmu.h kvm: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
kvm_psci.h ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible 2014-04-30 04:18:57 -07:00
linkage.h
lse.h arm64: lse: rename ARM64_CPU_FEAT_LSE_ATOMICS for consistency 2015-07-27 15:28:54 +01:00
memblock.h
memory.h arm64 updates for 4.4: 2015-11-04 14:47:13 -08:00
mmu.h arm64: mm: rewrite ASID allocator and MM context-switching code 2015-10-07 11:55:41 +01:00
mmu_context.h arm64: use non-global mappings for UEFI runtime regions 2015-11-18 09:40:20 +00:00
module.h
neon.h arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
opcodes.h arm64: Add AArch32 instruction set condition code checks 2014-11-20 16:33:45 +00:00
page.h arm64: Add 16K page size support 2015-10-19 17:55:12 +01:00
paravirt.h arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops 2015-12-21 14:40:54 +00:00
pci.h ARM64 / ACPI: Introduce PCI stub functions for ACPI 2015-03-25 11:49:31 +00:00
percpu.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
perf_event.h arm64: perf: factor out callchain code 2015-07-27 11:08:39 +01:00
pgalloc.h arm64: move PGD_SIZE definition to pgalloc.h 2015-10-12 17:46:30 +01:00
pgtable-hwdef.h arm64: hugetlb: add support for PTE contiguous bit 2015-12-21 17:26:00 +00:00
pgtable-types.h arm64: expose number of page table levels on Kconfig level 2015-04-14 16:49:01 -07:00
pgtable.h arch/arm64/include/asm/pgtable.h: add pmd_mkclean for THP 2016-01-15 17:56:32 -08:00
proc-fns.h arm64: kill flush_cache_all() 2015-05-19 15:27:42 +01:00
processor.h arm64: Delay cpu feature capability checks 2015-10-21 15:35:58 +01:00
ptrace.h arm64: Fix compat register mappings 2015-10-29 16:55:15 +00:00
seccomp.h arm64: add seccomp support 2014-11-28 10:24:59 +00:00
shmparam.h arm64: fix COMPAT_SHMLBA definition for large pages 2015-12-02 14:00:10 +00:00
signal32.h arm64: Use get_signal() signal_setup_done() 2014-08-06 12:56:16 +02:00
smp.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
smp_plat.h arm64: remove dead-code depending on CONFIG_UP_LATE_INIT 2015-07-29 18:32:09 +01:00
sparsemem.h arm64: mm: update max pa bits to 48 2014-08-19 20:23:02 +01:00
spinlock.h arm64: spinlock: serialise spin_unlock_wait against concurrent lockers 2015-12-03 19:37:59 +00:00
spinlock_types.h arm64: include linux/types.h in asm/spinlock_types.h 2015-07-27 11:09:34 +01:00
stackprotector.h arm64: Add CONFIG_CC_STACKPROTECTOR 2014-07-09 12:23:48 +01:00
stacktrace.h arm64: ftrace: fix a stack tracer's output under function graph tracer 2015-12-21 17:26:02 +00:00
stat.h
string.h arm64: add KASAN support 2015-10-12 17:46:36 +01:00
suspend.h arm64: kernel: rename __cpu_suspend to keep it aligned with arm 2015-06-19 14:46:39 +01:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: Add audit support 2014-07-10 11:06:00 +01:00
sysreg.h arm64: Add macros to read/write system registers 2015-12-14 11:30:38 +00:00
system_misc.h arm64: use private ratelimit state along with show_unhandled_signals 2015-06-19 16:26:15 +01:00
thread_info.h arm64: Store struct thread_info in sp_el0 2015-12-08 11:40:48 +00:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h arm64: tlbflush: avoid flushing when fullmm == 1 2015-10-07 11:56:21 +01:00
tlbflush.h arm64: tlb: remove redundant barrier from __flush_tlb_pgtable 2015-10-07 11:56:33 +01:00
topology.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
traps.h arm64: Add __exception_irq_entry definition for function graph 2015-08-12 17:23:45 +01:00
uaccess.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
unistd.h arm64: compat: wire up new syscalls 2015-10-14 13:51:41 +01:00
unistd32.h arm64: compat: wire up new syscalls 2015-10-14 13:51:41 +01:00
vdso.h
vdso_datapage.h
virt.h arm64: KVM: remove __kvm_hyp_code_{start,end} from hyp.S 2014-07-11 04:57:35 -07:00
word-at-a-time.h arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs 2013-12-19 17:43:08 +00:00