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Paolo Bonzini c25f53b06e raw: Probe required direct I/O alignment 
Add a bs->request_alignment field that contains the required
offset/length alignment for I/O requests and fill it in the raw block
drivers. Use ioctls if possible, else see what alignment it takes for
O_DIRECT to succeed.

While at it, also expose the memory alignment requirements, which may be
(and in practice are) different from the disk alignment requirements.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-01-24 17:40:02 +01:00
audio
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backends
rng: initialize file descriptor to -1
2014-01-06 13:45:46 -05:00
block
raw: Probe required direct I/O alignment
2014-01-24 17:40:02 +01:00
bsd-user
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default-configs
default-configs: Add config for aarch64-linux-user
2014-01-08 19:07:21 +00:00
disas
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docs
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dtc @ bc895d6d09
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fpu
softfloat: Add support for ties-away rounding
2014-01-08 19:07:22 +00:00
fsdev
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gdb-xml
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hw
block: rename buffer_alignment to guest_block_size
2014-01-24 17:40:01 +01:00
include
raw: Probe required direct I/O alignment
2014-01-24 17:40:02 +01:00
libcacard
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linux-headers
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linux-user
linux-user: Remove regs parameter of load_elf_binary and load_flt_binary
2014-01-10 08:51:37 +02:00
net
misc: Use macro ARRAY_SIZE where possible
2013-12-23 16:02:19 +04:00
pc-bios
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pixman @ 97336fad32
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po
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qapi
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qga
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qobject
qapi: extend qdict_flatten() for QLists
2014-01-22 12:07:17 +01:00
qom
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
roms
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scripts
qapi: Add "errno" to the list of polluted words
2014-01-22 12:07:18 +01:00
slirp
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stubs
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sysconfigs/target
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target-alpha
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target-arm
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
target-cris
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target-i386
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
target-lm32
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target-m68k
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target-microblaze
Microblaze: Convert Microblaze-pic handling to GPIOs
2014-01-14 11:08:36 +10:00
target-mips
target-mips: Use new qemu_ld/st opcodes
2013-12-21 16:42:11 +01:00
target-moxie
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target-openrisc
openrisc: Fix spelling in comment (transaltion -> translation)
2013-12-23 16:02:19 +04:00
target-ppc
PPC: Fix compilation with TCG debug
2013-12-22 19:15:55 +01:00
target-s390x
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target-sh4
target-sh4: Use new qemu_ld/st opcodes
2013-12-21 16:42:15 +01:00
target-sparc
SPARC: Fix LEON3 power down instruction
2014-01-15 15:37:33 +10:00
target-unicore32
…
target-xtensa
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tcg
tcg/i386: fix a comment
2013-12-21 16:41:56 +01:00
tests
vmdk: Check for overhead when opening
2014-01-24 14:33:00 +01:00
trace
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ui
ui/cocoa: Remove stray tabs
2014-01-12 22:27:10 +00:00
util
qemu_memalign: Allow small alignments
2014-01-24 17:40:01 +01:00
.exrc
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.gitignore
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.gitmodules
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.mailmap
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.travis.yml
.travis.yml: Add aarch64-* targets
2014-01-08 19:07:20 +00:00
aio-posix.c
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aio-win32.c
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arch_init.c
migration: synchronize memory bitmap 64bits at a time
2014-01-13 14:04:55 +01:00
async.c
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balloon.c
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block-migration.c
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block.c
raw: Probe required direct I/O alignment
2014-01-24 17:40:02 +01:00
blockdev-nbd.c
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blockdev.c
qmp: Allow to take external snapshots on bs graphs node.
2014-01-24 16:07:08 +01:00
blockjob.c
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bt-host.c
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bt-vhci.c
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Changelog
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CODING_STYLE
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configure
gluster: Implement .bdrv_co_write_zeroes for gluster
2014-01-22 12:07:16 +01:00
COPYING
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COPYING.LIB
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coroutine-gthread.c
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coroutine-sigaltstack.c
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coroutine-ucontext.c
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coroutine-win32.c
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cpu-exec.c
QOM CPUState refactorings / X86CPU
2014-01-10 11:04:31 -08:00
cpus.c
target-i386: Move apic_state field from CPUX86State to X86CPU
2013-12-23 16:30:40 +01:00
cputlb.c
memory: split cpu_physical_memory_* functions to its own include
2014-01-13 14:04:54 +01:00
device_tree.c
device_tree: qemu_fdt_setprop: Rename val_array arg
2013-12-20 01:58:12 +01:00
device-hotplug.c
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disas.c
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dma-helpers.c
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dump.c
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exec.c
memory: split cpu_physical_memory_* functions to its own include
2014-01-13 14:04:54 +01:00
gdbstub.c
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HACKING
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hmp-commands.hx
block: update block commit documentation regarding image truncation
2014-01-24 16:12:49 +01:00
hmp.c
qmp: Allow to take external snapshots on bs graphs node.
2014-01-24 16:07:08 +01:00
hmp.h
monitor: add object-add (QMP) and object_add (HMP) command
2014-01-06 13:45:47 -05:00
iohandler.c
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ioport.c
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kvm-all.c
memory: move bitmap synchronization to its own function
2014-01-13 14:04:55 +01:00
kvm-stub.c
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LICENSE
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main-loop.c
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MAINTAINERS
MAINTAINERS: add myself as cocoa UI co-maintainer
2014-01-12 22:27:10 +00:00
Makefile
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Makefile.objs
readline: move readline to a generic location
2014-01-22 12:07:17 +01:00
Makefile.target
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memory_mapping.c
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memory.c
memory: split cpu_physical_memory_* functions to its own include
2014-01-13 14:04:54 +01:00
migration-exec.c
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migration-fd.c
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migration-rdma.c
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migration-tcp.c
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migration-unix.c
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migration.c
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
monitor.c
readline: move readline to a generic location
2014-01-22 12:07:17 +01:00
nbd.c
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os-posix.c
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os-win32.c
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page_cache.c
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qapi-schema.json
block: update block commit documentation regarding image truncation
2014-01-24 16:12:49 +01:00
qdev-monitor.c
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
qdict-test-data.txt
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qemu-bridge-helper.c
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qemu-char.c
misc: Use macro ARRAY_SIZE where possible
2013-12-23 16:02:19 +04:00
qemu-coroutine-io.c
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qemu-coroutine-lock.c
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qemu-coroutine-sleep.c
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qemu-coroutine.c
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qemu-doc.texi
docs: qcow2 compat=1.1 is now the default
2014-01-22 12:07:16 +01:00
qemu-file.c
qemu-file: Move QEMUFile code to qemu-file.c
2014-01-13 12:39:49 +01:00
qemu-img-cmds.hx
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qemu-img.c
qemu-option: Remove qemu_opts_create_nofail
2014-01-06 15:02:30 -05:00
qemu-img.texi
block: update block commit documentation regarding image truncation
2014-01-24 16:12:49 +01:00
qemu-io-cmds.c
qemu-io: add command completion
2014-01-22 12:07:17 +01:00
qemu-io.c
qemu-io: Make filename optional
2014-01-22 12:07:18 +01:00
qemu-log.c
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qemu-nbd.c
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qemu-nbd.texi
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qemu-options-wrapper.h
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qemu-options.h
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qemu-options.hx
doc: Mention chardev:id in available devices for -serial
2014-01-01 18:03:55 +04:00
qemu-seccomp.c
seccomp: exit if seccomp_init() fails
2013-12-20 16:38:29 -02:00
qemu-tech.texi
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qemu-timer.c
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qemu.nsi
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qemu.sasl
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qmp-commands.hx
block: update block commit documentation regarding image truncation
2014-01-24 16:12:49 +01:00
qmp.c
monitor: add object-add (QMP) and object_add (HMP) command
2014-01-06 13:45:47 -05:00
qtest.c
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README
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rules.mak
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savevm.c
savevm: Small comment about why timer QEMUFile/VMState code is in savevm.c
2014-01-13 12:39:49 +01:00
spice-qemu-char.c
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tcg-runtime.c
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tci.c
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thread-pool.c
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thunk.c
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tpm.c
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trace-events
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translate-all.c
cputlb: Tidy memset() of arrays
2013-12-23 15:32:36 +01:00
translate-all.h
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user-exec.c
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VERSION
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version.rc
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vl.c
Merge remote branch 'luiz/queue/qmp' into qmpq
2014-01-14 12:10:08 +10:00
vmstate.c
vmstate: Move VMState code to vmstate.c
2014-01-13 12:39:49 +01:00
xbzrle.c
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xen-all.c
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xen-mapcache.c
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xen-stub.c
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README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
Description
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Readme 404 MiB
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