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  1. 27 10月, 2014 1 次提交
  3. 24 10月, 2014 1 次提交
  5. 15 10月, 2014 1 次提交
  7. 09 10月, 2014 1 次提交
  9. 04 10月, 2014 2 次提交
  11. 03 10月, 2014 2 次提交
    • J
      pc/vl: Add units-per-default-bus property · 16026518
      由 John Snow 提交于 
      This patch adds the 'units_per_default_bus' property which
allows individual boards to declare their desired
index => (bus,unit) mapping for their default HBA, so that
boards such as Q35 can specify that its default if_ide HBA,
AHCI, only accepts one unit per bus.

This property only overrides the mapping for drives matching
the block_default_type interface.

This patch also adds this property to *all* past and present
Q35 machine types. This retroactive addition is justified
because the previous erroneous index=>(bus,unit) mappings
caused by lack of such a property were not utilized due to
lack of initialization code in the Q35 init routine.

Further, semantically, the Q35 board type has always had the
property that its default HBA, AHCI, only accepts one unit per
bus. The new code added to add devices to drives relies upon
the accuracy of this mapping. Thus, the property is applied
retroactively to reduce complexity of allowing IDE HBAs with
different units per bus.

Examples:

Prior to this patch, all IDE HBAs were assumed to use 2 units
per bus (Master, Slave). When using Q35 and AHCI, however, we
only allow one unit per bus.

-hdb foo.qcow2 would become index=1, or bus=0,unit=1.
-hdd foo.qcow2 would become index=3, or bus=1,unit=1.
-drive file=foo.qcow2,index=5 becomes bus=2,unit=1.

These are invalid for AHCI. They now become, under Q35 only:

-hdb foo.qcow2 --> index=1, bus=1, unit=0.
-hdd foo.qcow2 --> index=3, bus=3, unit=0.
-drive file=foo.qcow2,index=5 --> bus=5,unit=0.

The mapping is adjusted based on the fact that the default IF
for the Q35 machine type is IF_IDE, and units-per-default-bus
overrides the IDE mapping from its default of 2 units per bus
to just 1 unit per bus.
Signed-off-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Message-id: 1412187569-23452-4-git-send-email-jsnow@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      16026518
    • J
      blockdev: Orphaned drive search · a66c9dc7
      由 John Snow 提交于 
      When users use command line options like -hda, -cdrom,
or even -drive if=ide, it is up to the board initialization
routines to pick up these drives and create backing
devices for them.

Some boards, like Q35, have not been doing this.
However, there is no warning explaining why certain
drive specifications are just silently ignored,
so this function adds a check to print some warnings
to assist users in debugging these sorts of issues
in the future.

This patch will not warn about drives added with if_none,
for which it is not possible to tell in advance if
the omission of a backing device is an issue.

A warning in these cases is considered appropriate.
Signed-off-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1412187569-23452-2-git-send-email-jsnow@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      a66c9dc7
  13. 30 9月, 2014 1 次提交
  15. 22 9月, 2014 1 次提交
    • C
      async: aio_context_new(): Handle event_notifier_init failure · 2f78e491
      由 Chrysostomos Nanakos 提交于 
      On a system with a low limit of open files the initialization
of the event notifier could fail and QEMU exits without printing any
error information to the user.

The problem can be easily reproduced by enforcing a low limit of open
files and start QEMU with enough I/O threads to hit this limit.

The same problem raises, without the creation of I/O threads, while
QEMU initializes the main event loop by enforcing an even lower limit of
open files.

This commit adds an error message on failure:

 # qemu [...] -object iothread,id=iothread0 -object iothread,id=iothread1
 qemu: Failed to initialize event notifier: Too many open files in system
Signed-off-by: NChrysostomos Nanakos <cnanakos@grnet.gr>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      2f78e491
  17. 20 9月, 2014 1 次提交
  19. 19 9月, 2014 1 次提交
  21. 11 9月, 2014 1 次提交
  23. 10 9月, 2014 1 次提交
  25. 04 9月, 2014 1 次提交
  27. 29 8月, 2014 1 次提交
  29. 26 8月, 2014 1 次提交
  31. 15 8月, 2014 2 次提交
  33. 06 8月, 2014 2 次提交
  35. 22 7月, 2014 1 次提交
  37. 18 7月, 2014 1 次提交
  39. 12 7月, 2014 1 次提交
  41. 01 7月, 2014 2 次提交
    • Y
      trace: add qemu_system_powerdown_request and qemu_system_shutdown_request trace events · bc78cff9
      由 Yang Zhiyong 提交于 
      We have the experience that the guest doesn't stop successfully
though it was instructed to shut down.

The root cause may be not in QEMU mostly.  However, QEMU is often
suspected at the beginning just because the issue occurred in
virtualization environment.

Therefore, we need to affirm that QEMU received the shutdown
request and raised ACPI irq from "virsh shutdown" command,
virt-manger or stopping QEMU process to the VM .
So that we can affirm the problems was belonged to the Guset OS
rather than the QEMU itself.

When we stop guests by "virsh shutdown" command or virt-manger,
or stopping QEMU process, qemu_system_powerdown_request() or
qemu_system_shutdown_request() is called. Then the below functions
in main_loop_should_exit() of Vl.c are called roughly in the
following order.

	if (qemu_powerdown_requested())
		qemu_system_powerdown()
			monitor_protocol_event(QEVENT_POWERDOWN, NULL)

	OR

	if(qemu_shutdown_requested()}
		monitor_protocol_event(QEVENT_SHUTDOWN, NULL);

The tracepoint of monitor_protocol_event() already exists, but no
tracepoints are defined for qemu_system_powerdown_request() and
qemu_system_shutdown_request(). So this patch adds two tracepoints for
the two functions. We believe that it will become much easier to
isolate the problem mentioned above by these tracepoints.
Signed-off-by: NYang Zhiyong <yangzy.fnst@cn.fujitsu.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      bc78cff9
    • P
      memory: MemoryRegion: use /machine as default owner · b5c2c3d0
      由 Paolo Bonzini 提交于 
      This will be added (after QOMification) as the QOM parent.
Reviewed-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      b5c2c3d0
  43. 29 6月, 2014 1 次提交
  45. 24 6月, 2014 1 次提交
  47. 23 6月, 2014 11 次提交
  49. 19 6月, 2014 1 次提交