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  1. 19 5月, 2014 2 次提交
    • P
      block: optimize zero writes with bdrv_write_zeroes · 465bee1d
      由 Peter Lieven 提交于 
      this patch tries to optimize zero write requests
by automatically using bdrv_write_zeroes if it is
supported by the format.

This significantly speeds up file system initialization and
should speed zero write test used to test backend storage
performance.

I ran the following 2 tests on my internal SSD with a
50G QCOW2 container and on an attached iSCSI storage.

a) mkfs.ext4 -E lazy_itable_init=0,lazy_journal_init=0 /dev/vdX

QCOW2         [off]     [on]     [unmap]
-----
runtime:       14secs    1.1secs  1.1secs
filesize:      937M      18M      18M

iSCSI         [off]     [on]     [unmap]
----
runtime:       9.3s      0.9s     0.9s

b) dd if=/dev/zero of=/dev/vdX bs=1M oflag=direct

QCOW2         [off]     [on]     [unmap]
-----
runtime:       246secs   18secs   18secs
filesize:      51G       192K     192K
throughput:    203M/s    2.3G/s   2.3G/s

iSCSI*        [off]     [on]     [unmap]
----
runtime:       8mins     45secs   33secs
throughput:    106M/s    1.2G/s   1.6G/s
allocated:     100%      100%     0%

* The storage was connected via an 1Gbit interface.
  It seems to internally handle writing zeroes
  via WRITESAME16 very fast.
Signed-off-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      465bee1d
    • M
      curl: Add usage documentation · 0a86cb73
      由 Matthew Booth 提交于 
      Signed-off-by: NMatthew Booth <mbooth@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      0a86cb73
  3. 27 4月, 2014 1 次提交
  5. 26 4月, 2014 1 次提交
  7. 18 4月, 2014 1 次提交
    • M
      doc: grammify "allows to" · 9d85d557
      由 Michael Tokarev 提交于 
      English language grammar does not allow usage
of the word "allows" directly followed by an
infinitive, declaring constructs like "something
allows to do somestuff" un-grammatical.  Often
it is possible to just insert "one" between "allows"
and "to" to make the construct grammatical, but
usually it is better to re-phrase the statement.

This patch tries to fix 4 examples of "allows to"
usage in qemu doc, but does not address comments
in the code with similar constructs.  It also adds
missing "the" in the same line.
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
      9d85d557
  9. 27 3月, 2014 1 次提交
  11. 17 3月, 2014 1 次提交
  13. 10 3月, 2014 1 次提交
  15. 01 1月, 2014 1 次提交
  17. 09 12月, 2013 2 次提交
    • P
      help: add id suboption to -iscsi · 2fe3798c
      由 Paolo Bonzini 提交于 
      Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      2fe3798c
    • V
      net: Adding netmap network backend · 58952137
      由 Vincenzo Maffione 提交于 
      This patch adds support for a network backend based on netmap.
netmap is a framework for high speed packet I/O. You can use it
to build extremely fast traffic generators, monitors, software
switches or network middleboxes. Its companion software switch
VALE lets you interconnect virtual machines.
netmap and VALE are implemented as a non-intrusive kernel module,
support NICs from multiple vendors, are part of standard FreeBSD
distributions and available in source format for Linux too.

To compile QEMU with netmap support, use the following configure
options:
    ./configure [...] --enable-netmap --extra-cflags=-I/path/to/netmap/sys
where "/path/to/netmap" contains the netmap source code, available at
    http://info.iet.unipi.it/~luigi/netmap/

The same webpage contains more information about the netmap project
(together with papers and presentations).
Signed-off-by: NVincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      58952137
  19. 25 11月, 2013 1 次提交
  21. 18 11月, 2013 1 次提交
  23. 06 9月, 2013 2 次提交
  25. 29 7月, 2013 1 次提交
    • M
      Revert "chardev: Make the name of memory device consistent" · 4f57378f
      由 Markus Armbruster 提交于 
      This reverts commit 6a85e60c.

Commit 51767e7c "qemu-char: Add new char backend CirMemCharDriver"
introduced a memory ring buffer character device driver named
"memory".  Commit 3949e594 "qemu-char: Saner naming of memchar stuff &
doc fixes" changed the driver name to "ringbuf", along with a whole
bunch of other names, with the following rationale:

    Naming is a mess.  The code calls the device driver
    CirMemCharDriver, the public API calls it "memory", "memchardev",
    or "memchar", and the special commands are named like
    "memchar-FOO".  "memory" is a particularly unfortunate choice,
    because there's another character device driver called
    MemoryDriver.  Moreover, the device's distinctive property is that
    it's a ring buffer, not that's in memory.

This is what we released in 1.4.0.

Unfortunately, the rename missed a critical instance of "memory": the
actual driver name.  Thus, the new device could be used only by an
entirely undocumented name.  The documented name did not work.
Bummer.

Commit 6a85e60c fixes this by changing the documentation to match the
code.  It also changes some, but not all related occurences of
"ringbuf" to "memory".  Left alone are identifiers in C code, HMP and
QMP commands.  The latter are external interface, so they can't be
changed.

The result is an inconsistent mess.  Moreover, "memory" is a rotten
name.  The device's distinctive property is that it's a ring buffer,
not that's in memory.  User's don't care whether it's in RAM, flash,
or carved into chocolate tablets by Oompa Loompas.

Revert the commit.  Next commit will fix just the bug.

Cc: qemu-stable@nongnu.org
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-id: 1374849874-25531-2-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      4f57378f
  27. 27 7月, 2013 1 次提交
  29. 19 7月, 2013 1 次提交
  31. 11 7月, 2013 1 次提交
    • S
      add timestamp to error_report() · 5e2ac519
      由 Seiji Aguchi 提交于 
      [Issue]
When we offer a customer support service and a problem happens
in a customer's system, we try to understand the problem by
comparing what the customer reports with message logs of the
customer's system.

In this case, we often need to know when the problem happens.

But, currently, there is no timestamp in qemu's error messages.
Therefore, we may not be able to understand the problem based on
error messages.

[Solution]
Add a timestamp to qemu's error message logged by
error_report() with g_time_val_to_iso8601().
Signed-off-by: NSeiji Aguchi <seiji.aguchi@hds.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
      5e2ac519
  33. 10 7月, 2013 1 次提交
  35. 29 6月, 2013 1 次提交
    • M
      vl: convert -smp to qemu_opts_parse() · 12b7f57e
      由 Michael Tokarev 提交于 
      This also introduces a new suboption, "cpus=",
which is the default.  So after this patch,

 -smp n,sockets=y

is the same as

  -smp cpus=n,sockets=y

(with "cpu" being some generic thing, referring to
either cores, or threads, or sockets, as before).

We still don't validate relations between different
numbers, for example it is still possible to say

  -smp 1,sockets=10

and it will be accepted to mean sockets=1.
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
Message-id: 1372072012-30305-1-git-send-email-mjt@msgid.tls.msk.ru
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      12b7f57e
  37. 24 6月, 2013 1 次提交
  39. 22 6月, 2013 1 次提交
  41. 20 6月, 2013 1 次提交
  43. 23 5月, 2013 1 次提交
  45. 22 5月, 2013 1 次提交
  47. 04 5月, 2013 1 次提交
    • T
      TLS support for VNC Websockets · 0057a0d5
      由 Tim Hardeck 提交于 
      Added TLS support to the VNC QEMU Websockets implementation.
VNC-TLS needs to be enabled for this feature to be used.

The required certificates are specified as in case of VNC-TLS
with the VNC parameter "x509=<path>".

If the server certificate isn't signed by a rooth authority it needs to
be manually imported in the browser because at least in case of Firefox
and Chrome there is no user dialog, the connection just gets canceled.

As a side note VEncrypt over Websocket doesn't work atm because TLS can't
be stacked in the current implementation. (It also didn't work before)
Nevertheless to my knowledge there is no HTML 5 VNC client which supports
it and the Websocket connection can be encrypted with regular TLS now so
it should be fine for most use cases.
Signed-off-by: NTim Hardeck <thardeck@suse.de>
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366727581-5772-1-git-send-email-thardeck@suse.de
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      0057a0d5
  49. 22 4月, 2013 1 次提交
  51. 15 4月, 2013 1 次提交
    • R
      block: Add support for Secure Shell (ssh) block device. · 0a12ec87
      由 Richard W.M. Jones 提交于 
        qemu-system-x86_64 -drive file=ssh://hostname/some/image

QEMU will ssh into 'hostname' and open '/some/image' which is made
available as a standard block device.

You can specify a username (ssh://user@host/...) and/or a port number
(ssh://host:port/...).  You can also use an alternate syntax using
properties (file.user, file.host, file.port, file.path).

Current limitations:

- Authentication must be done without passwords or passphrases, using
  ssh-agent.  Other authentication methods are not supported.

- Uses a single connection, instead of concurrent AIO with multiple
  SSH connections.

This is implemented using libssh2 on the client side.  The server just
requires a regular ssh daemon with sftp-server support.  Most ssh
daemons on Unix/Linux systems will work out of the box.
Signed-off-by: NRichard W.M. Jones <rjones@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      0a12ec87
  53. 04 4月, 2013 1 次提交
  55. 26 3月, 2013 1 次提交
  57. 22 3月, 2013 1 次提交
  59. 19 3月, 2013 1 次提交
    • A
      add a boot option to do strict boot · c8a6ae8b
      由 Amos Kong 提交于 
      Seabios already added a new device type to halt booting.
Qemu can add "HALT" at the end of bootindex string, then
seabios will halt booting after trying to boot from all
selected devices.

This patch added a new boot option to configure if boot
from un-selected devices.

This option only effects when boot priority is changed by
bootindex options, the old style(-boot order=..) will still
try to boot from un-selected devices.

v2: add HALT entry in get_boot_devices_list()
v3: rebase to latest qemu upstream
Signed-off-by: NAmos Kong <akong@redhat.com>
Message-id: 1363674207-31496-1-git-send-email-akong@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      c8a6ae8b
  61. 13 3月, 2013 3 次提交
    • S
      Add support for cancelling of a TPM command · 92dcc234
      由 Stefan Berger 提交于 
      This patch adds support for cancelling an executing TPM command.
In Linux for example a user can cancel a command through the TPM's
sysfs 'cancel' entry using

echo "1" > /sysfs/class/misc/tpm0/device/cancel

This patch propagates the cancellation of a command inside a VM
to the host TPM's sysfs entry.
It also uses the possibility to cancel the command before QEMU VM
shutdown or reboot, which helps in preventing QEMU from hanging while
waiting for the completion of the command.
To relieve higher layers or users from having to determine the TPM's
cancel sysfs entry, the driver searches for the entry in well known
locations.
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: NCorey Bryant <coreyb@linux.vnet.ibm.com>
Reviewed-by: NJoel Schopp <jschopp@linux.vnet.ibm.com>
Message-id: 1361987275-26289-7-git-send-email-stefanb@linux.vnet.ibm.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      92dcc234
    • S
      Add a TPM Passthrough backend driver implementation · 4549a8b7
      由 Stefan Berger 提交于 
      This patch is based of off version 9 of Stefan Berger's patch series
  "QEMU Trusted Platform Module (TPM) integration"
and adds a new backend driver for it.

This patch adds a passthrough backend driver for passing commands sent to the
emulated TPM device directly to a TPM device opened on the host machine.
Thus it is possible to use a hardware TPM device in a system running on QEMU,
providing the ability to access a TPM in a special state (e.g. after a Trusted
Boot).

This functionality is being used in the acTvSM Trusted Virtualization Platform
which is available on [1].

Usage example:
  qemu-system-x86_64 -tpmdev passthrough,id=tpm0,path=/dev/tpm0 \
                     -device tpm-tis,tpmdev=tpm0 \
                     -cdrom test.iso -boot d

Some notes about the host TPM:
The TPM needs to be enabled and activated. If that's not the case one
has to go through the BIOS/UEFI and enable and activate that TPM for TPM
commands to work as expected.
It may be necessary to boot the kernel using tpm_tis.force=1 in the boot
command line or 'modprobe tpm_tis force=1' in case of using it as a module.

Regards,
Andreas Niederl, Stefan Berger

[1] http://trustedjava.sourceforge.net/Signed-off-by: NAndreas Niederl <andreas.niederl@iaik.tugraz.at>
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: NCorey Bryant <coreyb@linux.vnet.ibm.com>
Reviewed-by: NJoel Schopp <jschopp@linux.vnet.ibm.com>
Message-id: 1361987275-26289-6-git-send-email-stefanb@linux.vnet.ibm.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      4549a8b7
    • S
      Support for TPM command line options · d1a0cf73
      由 Stefan Berger 提交于 
      This patch adds support for TPM command line options.
The command line options supported here are

./qemu-... -tpmdev passthrough,path=<path to TPM device>,id=<id>
           -device tpm-tis,tpmdev=<id>,id=<other id>

and

./qemu-... -tpmdev help

where the latter works similar to -soundhw help and shows a list of
available TPM backends (for example 'passthrough').

Using the type parameter, the backend is chosen, i.e., 'passthrough' for the
passthrough driver. The interpretation of the other parameters along
with determining whether enough parameters were provided is pushed into
the backend driver, which needs to implement the interface function
'create' and return a TPMDriverOpts structure if the VM can be started or
'NULL' if not enough or bad parameters were provided.

Monitor support for 'info tpm' has been added. It for example prints the
following:

(qemu) info tpm
TPM devices:
 tpm0: model=tpm-tis
  \ tpm0: type=passthrough,path=/dev/tpm0,cancel-path=/sys/devices/pnp0/00:09/cancel
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: NCorey Bryant <coreyb@linux.vnet.ibm.com>
Reviewed-by: NJoel Schopp <jschopp@linux.vnet.ibm.com>
Message-id: 1361987275-26289-2-git-send-email-stefanb@linux.vnet.ibm.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      d1a0cf73
  63. 08 3月, 2013 1 次提交
  65. 04 3月, 2013 2 次提交
  67. 27 2月, 2013 1 次提交