Commit Graph

80 Commits

Author SHA1 Message Date
Changpeng Liu 25b1d45a19 vhost-blk: turn on pre-defined RO feature bit
Read only feature shouldn't be negotiable, because if the
backend device reported Read only feature supported, QEMU
host driver shouldn't change backend's RO attribute. While
here, also enable the vhost-user-blk test utility to test
RO feature.

Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-06-01 19:20:38 +03:00
Tiwei Bie d84599f56c libvhost-user: support host notifier
This patch introduces the host notifier support in
libvhost-user. A new API is added to support setting
host notifier for each queue.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-24 21:14:11 +03:00
Changpeng Liu 7d405b2ffb contrib/vhost-user-blk: enable protocol feature for vhost-user-blk
This patch reports the protocol feature that is only advertised by
QEMU if the device implements the config ops.

Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-23 17:02:03 +03:00
Dr. David Alan Gilbert e3638151da libvhost-user: Send messages with no data
The response to a VHOST_USER_POSTCOPY_ADVISE contains a fd but doesn't
actually contain any data.   FIx vu_message_write so that it doesn't
do a 0-byte write() call, since this was ending up with rc=0
that was confusing the error handling code.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-23 17:02:02 +03:00
Changpeng Liu ea3e6f5a93 contrib/libvhost-user: add the protocol feature used for SET/GET message
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-04-09 17:35:46 +03:00
Dr. David Alan Gilbert 4275cd99c6 libvhost-user: Claim support for postcopy
Tell QEMU we understand the protocol features needed for postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 16:40:37 +02:00
Dr. David Alan Gilbert c639187e33 vhost-user: Add VHOST_USER_POSTCOPY_END message
This message is sent just before the end of postcopy to get the
client to stop using userfault since we wont respond to any more
requests.  It should close userfaultfd so that any other pages
get mapped to the backing file automatically by the kernel, since
at this point we know we've received everything.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 16:40:37 +02:00
Dr. David Alan Gilbert 0185cfb30b libvhost-user: mprotect & madvises for postcopy
Clear the area and turn off THP.
PROT_NONE the area until after we've userfault advised it
to catch any unexpected changes.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 16:40:37 +02:00
Dr. David Alan Gilbert 9bb3801994 vhost+postcopy: Send address back to qemu
We need a better way, but at the moment we need the address of the
mappings sent back to qemu so it can interpret the messages on the
userfaultfd it reads.

This is done as a 3 stage set:
   QEMU -> client
      set_mem_table

   mmap stuff, get addresses

   client -> qemu
       here are the addresses

   qemu -> client
       OK - now you can use them

That ensures that qemu has registered the new addresses in it's
userfault code before the client starts accessing them.

Note: We don't ask for the default 'ack' reply since we've got our own.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert 51a5d6e5b2 libvhost-user+postcopy: Register new regions with the ufd
When new regions are sent to the client using SET_MEM_TABLE, register
them with the userfaultfd.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert 55d754b307 postcopy+vhost-user: Split set_mem_table for postcopy
Split the set_mem_table routines in both qemu and libvhost-user
because the postcopy versions are going to be quite different
once changes in the later patches are added. However, this patch
doesn't produce any functional change, just the split.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert 6864a7b5ac vhost+postcopy: Transmit 'listen' to slave
Notify the vhost-user slave on reception of the 'postcopy-listen'
event from the source.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert 2a84ffc0be libvhost-user: Open userfaultfd
Open a userfaultfd (on a postcopy_advise) and send it back in
the reply to the qemu for it to monitor.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:27 +02:00
Dr. David Alan Gilbert d6e47717b0 libvhost-user: Support sending fds back to qemu
Allow replies with fds (for postcopy)

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:27 +02:00
Dr. David Alan Gilbert d3dff7a5a1 vhost-user: Add 'VHOST_USER_POSTCOPY_ADVISE' message
Wire up a notifier to send a VHOST_USER_POSTCOPY_ADVISE
message on an incoming advise.

Later patches will fill in the behaviour/contents of the
message.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:27 +02:00
Dr. David Alan Gilbert 9ccbfe14dd postcopy: Add vhost-user flag for postcopy and check it
Add a vhost feature flag for postcopy support, and
use the postcopy notifier to check it before allowing postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20 05:03:27 +02:00
Peter Maydell b734ed9de1 virtio,vhost,pci,pc: features, fixes and cleanups
- new stats in virtio balloon
 - virtio eventfd rework for boot speedup
 - vhost memory rework for boot speedup
 - fixes and cleanups all over the place
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio,vhost,pci,pc: features, fixes and cleanups

- new stats in virtio balloon
- virtio eventfd rework for boot speedup
- vhost memory rework for boot speedup
- fixes and cleanups all over the place

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Tue 13 Feb 2018 16:29:55 GMT
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (22 commits)
  virtio-balloon: include statistics of disk/file caches
  acpi-test: update FADT
  lpc: drop pcie host dependency
  tests: acpi: fix FADT not being compared to reference table
  hw/pci-bridge: fix pcie root port's IO hints capability
  libvhost-user: Support across-memory-boundary access
  libvhost-user: Fix resource leak
  virtio-balloon: unref the memory region before continuing
  pci: removed the is_express field since a uniform interface was inserted
  virtio-blk: enable multiple vectors when using multiple I/O queues
  pci/bus: let it has higher migration priority
  pci-bridge/i82801b11: clear bridge registers on platform reset
  vhost: Move log_dirty check
  vhost: Merge and delete unused callbacks
  vhost: Clean out old vhost_set_memory and friends
  vhost: Regenerate region list from changed sections list
  vhost: Merge sections added to temporary list
  vhost: Simplify ring verification checks
  vhost: Build temporary section list and deref after commit
  virtio: improve virtio devices initialization time
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-13 16:33:31 +00:00
Yongji Xie 293084a719 libvhost-user: Support across-memory-boundary access
The sg list/indirect descriptor table may be contigious
in GPA but not in HVA address space. But libvhost-user
wasn't aware of that. This would cause out-of-bounds
access. Even a malicious guest could use it to get
information from the vhost-user backend.

Introduce a plen parameter in vu_gpa_to_va() so we can
handle this case, returning the actual mapped length.

Signed-off-by: Yongji Xie <xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2018-02-13 18:25:48 +02:00
Yongji Xie bb102d1da1 libvhost-user: Fix resource leak
Free the mmaped memory when we need to mmap new memory
space on vu_set_mem_table_exec() and vu_set_log_base_exec() to
avoid memory leak.

Also close the corresponding fd after mmap() on
vu_set_log_base_exec() to avoid fd leak.

Signed-off-by: Yongji Xie <xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2018-02-13 18:25:48 +02:00
Markus Armbruster 922a01a013 Move include qemu/option.h from qemu-common.h to actual users
qemu-common.h includes qemu/option.h, but most places that include the
former don't actually need the latter.  Drop the include, and add it
to the places that actually need it.

While there, drop superfluous includes of both headers, and
separate #include from file comment with a blank line.

This cleanup makes the number of objects depending on qemu/option.h
drop from 4545 (out of 4743) to 284 in my "build everything" tree.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-20-armbru@redhat.com>
[Semantic conflict with commit bdd6a90a9e in block/nvme.c resolved]
2018-02-09 13:52:16 +01:00
Markus Armbruster d8e39b7062 Use #include "..." for our own headers, <...> for others
System headers should be included with <...>, our own headers with
"...".  Offenders tracked down with an ugly, brittle and probably
buggy Perl script.  Previous iteration was commit a9c94277f0.

Delete inclusions of "string.h" and "strings.h" instead of fixing them
to <string.h> and <strings.h>, because we always include these via
osdep.h.

Put the cleaned up system header includes first.

While there, separate #include from file comment with exactly one
blank line.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-2-armbru@redhat.com>
2018-02-09 05:05:11 +01:00
Changpeng Liu 406d2aa2cc contrib/vhost-user-blk: introduce a vhost-user-blk sample application
This commit introduces a vhost-user-blk backend device, it uses UNIX
domain socket to communicate with QEMU. The vhost-user-blk sample
application should be used with QEMU vhost-user-blk-pci device.

To use it, complie with:
make vhost-user-blk

and start like this:
vhost-user-blk -b /dev/sdb -s /path/vhost.socket

Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-01-18 21:52:37 +02:00
Changpeng Liu 0bc24d831e contrib/libvhost-user: enable virtio config space messages
Enable VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG messages in
libvhost-user library, users can implement their own I/O target
based on the library. This enable the virtio config space delivered
between QEMU host device and the I/O target.

Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-01-18 21:52:37 +02:00
Paolo Bonzini 2ba60ec175 contrib: add systemd unit files
This lets distros standardize on how QEMU should install systemd
services for qemu-ga and qemu-pr-helper.

The qemu-ga unit file comes from Fedora, but I checked that
Debian is using the same path for the virtio-serisal port.

I would like to include this in 2.11, so that the qemu-pr-helper
socket can be standardized across distros.  Note however that
the files are not installed.  We can add a configure option
in 2.12 perhaps, but it's too late now; documenting the files
in the release notes should do.

Suggested-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20171124164422.3960-1-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-12-20 22:29:26 +01:00
Dr. David Alan Gilbert 13384f158c libvhost-user: Support VHOST_USER_SET_SLAVE_REQ_FD
Allow the qemu to pass us a slave fd.  We don't do anything
with it yet.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20171002191521.15748-5-dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2017-10-12 16:57:50 +02:00
Dr. David Alan Gilbert ea642e22ca libvhost-user: Update and fix feature and request lists
Update the ProtocolFeature and UserRequest lists to
match hw/virtio/vhost-user.c.
Fix the text labelling in libvhost-user.c to match the list.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20171002191521.15748-4-dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2017-10-12 16:57:46 +02:00
Dr. David Alan Gilbert bcf0836d0f libvhost-user: vu_queue_started
Add a vu_queue_started method to complement vu_queue_enabled.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20171002191521.15748-2-dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2017-10-12 16:57:36 +02:00
Marc-André Lureau 53a2e1b523 vhost-user-scsi: remove server_sock from VusDev
It is unneeded in the VusDev device structure, and also simplify a bit
the code.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 62ddfba034 vhost-user-scsi: use libvhost-user glib helper
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 8bb7ddb78a libvhost-user: add glib source helper
This file implements a bridge from the vu_init API of libvhost-user to
GSource, so that libvhost-user can be used inside a GLib main loop.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 422a26872e vhost-user-scsi: use glib logging
- PLOG is unused
- code is compiled out unless debug is enabled
- logging is too verbose
- you can pipe to ts to have timestamp if needed, or use structured
  logging with more recent glib

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 7fb5a569a4 vhost-user-scsi: simplify source handling
Using a hashtable.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 3e7bd3ad47 vhost-user-scsi: drop extra callback pointer
Use the one from the source with casting, like any other glib source.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 49a4882438 vhost-user-scsi: don't copy iscsi/scsi-lowlevel.h
There is no need to include hw/virtio/virtio-scsi.h, then the conflict
with SCSI_XFER enum goes away.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau ca853813f7 vhost-user-scsi: avoid use of iscsi_ namespace
It is confusing and could easily conflict with future versions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau ade9ab222e vhost-user-scsi: rename VUS types
- use Vus prefix consistently
- use CamelCase, since that's glib & libvhost-user style
- avoid _t postfix, usually for system headers

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau c7226ee77f vhost-user-scsi: remove unimplemented functions
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau d0dba9f4e7 vhost-user-scsi: remove VUS_MAX_LUNS
There is no code to support more than 1 yet, no need for that today.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau a755d271d8 vhost-user-scsi: remove vdev_scsi_add_iscsi_lun()
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau fa2cd143bf vhost-user-scsi: assert() in iscsi_add_lun()
Instead of a preliminary check, add an assert to the function that has
the pre-condition.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 689a9945e6 vhost-user-scsi: use NULL pointer
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 245792ddb7 vhost-user-scsi: simplify unix path cleanup
Always remove the unix path when leaving the program (instead of when
freeing scsi_dev). Note that unix_sock_new() also unlink() exisiting
path before creating the socket.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 4309251a8c vhost-user-scsi: remove vdev_scsi_find_by_vu()
The *dev pointer belongs to the vhost_scsi_dev_t parent.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 9a6903dbe3 vhost-user-scsi: also free the gtree
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau b4fe56e9ed vhost-user-scsi: glib calls that allocate don't return NULL
They abort instead, so get rid of failure conditions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 3d9ad8be3d vhost-user-scsi: use glib allocation
Use g_new/g_free instead of plain malloc. This simplify a bit memory
handling since glib will abort if it cannot allocate.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:09 +02:00
Marc-André Lureau 8c36ed6e02 vhost-user-scsi: code style fixes
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:08 +02:00
Marc-André Lureau 0644fe4ad0 vhost-user-scsi: connect unix socket before allocating
This simplify a little bit memory management in the following patches.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:08 +02:00
Marc-André Lureau b085b050c6 vhost-user-scsi: use g_strdup()
Since vhost-user-scsi uses glib.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-10-10 23:31:08 +02:00
Marc-André Lureau 19409df883 libvhost-user: improve vu_queue_pop() doc
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-10 23:31:08 +02:00