Commit Graph

9 Commits

Author SHA1 Message Date
Changpeng Liu 00343e4b54 vhost-user-blk: introduce a new vhost-user-blk host device
This commit introduces a new vhost-user device for block, it uses a
chardev to connect with the backend, same with Qemu virito-blk device,
Guest OS still uses the virtio-blk frontend driver.

To use it, start QEMU with command line like this:

qemu-system-x86_64 \
    -chardev socket,id=char0,path=/path/vhost.socket \
    -device vhost-user-blk-pci,chardev=char0,num-queues=2, \
            bootindex=2... \

Users can use different parameters for `num-queues` and `bootindex`.

Different with exist Qemu virtio-blk host device, it makes more easy
for users to implement their own I/O processing logic, such as all
user space I/O stack against hardware block device. It uses the new
vhost messages(VHOST_USER_GET_CONFIG) to get block virtio config
information from backend process.

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
Stefano Stabellini 6b827cca9a xen: do not build backends for targets that do not support xen
Change Makefile.objs to use CONFIG_XEN instead of CONFIG_XEN_BACKEND, so
that the Xen backends are only built for targets that support Xen.

Set CONFIG_XEN in the toplevel Makefile to ensure that files that are
built only once pick up Xen support properly.

Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Tested-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
CC: pbonzini@redhat.com
CC: peter.maydell@linaro.org
CC: rth@twiddle.net
CC: stefanha@redhat.com
Message-Id: <1489694518-16978-1-git-send-email-sstabellini@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-03-19 11:12:12 +01:00
Fam Zheng 52b53c04fa block: Always compile virtio-blk dataplane
Dataplane doesn't depend on linux-aio any more, so we don't need the
compiling condition now.

Configure options are kept but just print a message.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1410329871-28885-4-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-22 11:39:51 +01:00
Paolo Bonzini 6dd2a5c98a pc_sysfw: do not make it a device anymore
Move the code to hw/i386, the sole remaining property is available
as !pci_enabled.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1376069702-22330-4-git-send-email-aliguori@us.ibm.com

Rebased.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-08-12 09:31:14 -05:00
Keith Busch f3c507adcd NVMe: Initial commit for new storage interface
Initial commit for emulated Non-Volatile-Memory Express (NVMe) pci
storage device.

NVMe is an open, industry driven storage specification defining
an optimized register and command set designed to deliver the full
capabilities of non-volatile memory on PCIe SSDs. Further information
may be found on the organizations website at:

http://www.nvmexpress.org/

This commit implements the minimum from the specification to work with
existing drivers.

Cc: Keith Busch <keith.busch@gmail.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-06-17 17:47:59 +02:00
Paolo Bonzini 7b2478956a hw: move block devices to hw/block/, configure via default-configs/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:13 +02:00
Paolo Bonzini 6e7907468f hw: move virtio devices to hw/ subdirectories
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:12 +02:00
Paolo Bonzini 49ab747f66 hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:12 +02:00
Paolo Bonzini 1fd6bb44ed hw: make subdirectories for devices
Prepare the new directory structure.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:11 +02:00