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  1. 21 3月, 2017 7 次提交
  3. 20 3月, 2017 22 次提交
  5. 19 3月, 2017 5 次提交
    • P
      configure: remove Cygwin · 732a8020
      由 Paolo Bonzini 提交于 
      The Cygwin target is really compiling for native Win32 with -mno-cygwin.
Except, GCC 4.7.0 has finally removed the long deprecated -mno-cygwin
option, and that happened about five years ago.

Let it rest in peace.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      732a8020
    • S
      xen: do not build backends for targets that do not support xen · 6b827cca
      由 Stefano Stabellini 提交于 
      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: NStefano Stabellini <stefano@aporeto.com>
Tested-by: NGreg Kurz <groug@kaod.org>
Reviewed-by: NGreg 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: NPaolo Bonzini <pbonzini@redhat.com>
      6b827cca
    • P
      qemu-ga: obey LISTEN_PID when using systemd socket activation · 53fabd4b
      由 Paolo Bonzini 提交于 
      qemu-ga's socket activation support was not obeying the LISTEN_PID
environment variable, which avoids that a process uses a socket-activation
file descriptor meant for its parent.

Mess can for example ensue if a process forks a children before consuming
the socket-activation file descriptor and therefore setting O_CLOEXEC
on it.

Luckily, qemu-nbd also got socket activation code, and its copy does
support LISTEN_PID.  Some extra fixups are needed to ensure that the
code can be used for both, but that's what this patch does.  The
main change is to replace get_listen_fds's "consume" argument with
the FIRST_SOCKET_ACTIVATION_FD macro from the qemu-nbd code.

Cc: "Richard W.M. Jones" <rjones@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NDaniel P. Berrange <berrange@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      53fabd4b
    • M
      nios2: iic: Convert CPU prop to qom link · ebedf0f9
      由 Marek Vasut 提交于 
      Add a const qom link between the CPU and the IIC instead
of passing the CPU link through a qom property.
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 20170317210627.23532-1-marex@denx.de
Cc: Alexander Graf <agraf@suse.de>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Jeff Da Silva <jdasilva@altera.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Sandra Loosemore <sandra@codesourcery.com>
Cc: Yves Vandervennet <yvanderv@altera.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      ebedf0f9
    • P
      Merge remote-tracking branch 'remotes/xtensa/tags/20170317-xtensa' into staging · 96dd9c89
      由 Peter Maydell 提交于 
      target/xtensa fixes for 2.9:

- fix build failure when FDT support is not enabled;
- correctly pass command line arguments to semihosting guests.

# gpg: Signature made Fri 17 Mar 2017 18:14:01 GMT
# gpg:                using RSA key 0x51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg:                 aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg:                 aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB  17D8 51F9 CC91 F83F A044

* remotes/xtensa/tags/20170317-xtensa:
  target/xtensa: fix semihosting argc/argv implementation
  target/xtensa: xtfpga: load DTB only when FDT support is enabled
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      96dd9c89
  7. 18 3月, 2017 2 次提交
  9. 17 3月, 2017 4 次提交
    • P
      Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging · 31d89228
      由 Peter Maydell 提交于 
      Block layer fixes for 2.9.0-rc1

# gpg: Signature made Fri 17 Mar 2017 12:06:04 GMT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  block: quiesce AioContext when detaching from it
  thread-pool: add missing qemu_bh_cancel in completion function
  block: Propagate error in bdrv_open_backing_file
  blockdev: fix bitmap clear undo
  block: Always call bdrv_child_check_perm first
  file-posix: Don't leak fd in hdev_get_max_segments
  replication: clarify permissions
  file-posix: clean up max_segments buffer termination
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      31d89228
    • K
      Merge remote-tracking branch 'mreitz/tags/pull-block-2017-03-17' into queue-block · 11f0f5e5
      由 Kevin Wolf 提交于 
      Block patches for 2.9-rc1

# gpg: Signature made Fri Mar 17 12:59:20 2017 CET
# gpg:                using RSA key 0xF407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* mreitz/tags/pull-block-2017-03-17:
  block: quiesce AioContext when detaching from it
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      11f0f5e5
    • P
      block: quiesce AioContext when detaching from it · c2b6428d
      由 Paolo Bonzini 提交于 
      While it is true that bdrv_set_aio_context only works on a single
BlockDriverState subtree (see commit message for 53ec73e2, "block: Use
bdrv_drain to replace uncessary bdrv_drain_all", 2015-07-07), it works
at the AioContext level rather than the BlockDriverState level.

Therefore, it is also necessary to trigger pending bottom halves too,
even if no requests are pending.

For NBD this ensures that the aio_co_schedule of a previous call to
nbd_attach_aio_context is completed before detaching from the old
AioContext; it fixes qemu-iotest 094.  Another similar bug happens
when the VM is stopped and the virtio-blk dataplane irqfd is torn down.
In this case it's possible that guest I/O gets stuck if notify_guest_bh
was scheduled but doesn't run.

Calling aio_poll from another AioContext is safe if non-blocking; races
such as the one mentioned in the commit message for c9d1a561 ("block:
only call aio_poll on the current thread's AioContext", 2016-10-28)
are a concern for blocking calls.

I considered other options, including:

- moving the bs->wakeup mechanism to AioContext, and letting the caller
check.  This might work for virtio which has a clear place to wakeup
(notify_place_bh) and check the condition (virtio_blk_data_plane_stop).
For aio_co_schedule I couldn't find a clear place to check the condition.

- adding a dummy oneshot bottom half and waiting for it to trigger.
This has the complication that bottom half list is LIFO for historical
reasons.  There were performance issues caused by bottom half ordering
in the past, so I decided against it for 2.9.

Fixes: 99723548Reported-by: NMax Reitz <mreitz@redhat.com>
Reported-by: NHalil Pasic <pasic@linux.vnet.ibm.com>
Tested-by: NHalil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 20170314111157.14464-2-pbonzini@redhat.com
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NMax Reitz <mreitz@redhat.com>
      c2b6428d
    • P
      thread-pool: add missing qemu_bh_cancel in completion function · b7a745dc
      由 Peter Lieven 提交于 
      commit 3c80ca15 fixed a deadlock scenarion with nested aio_poll invocations.

However, the rescheduling of the completion BH introcuded unnecessary spinning
in the main-loop. On very fast file backends this can even lead to the
"WARNING: I/O thread spun for 1000 iterations" message popping up.

Callgrind reports about 3-4% less instructions with this patch running
qemu-img bench on a ramdisk based VMDK file.

Fixes: 3c80ca15
Cc: qemu-stable@nongnu.org
Signed-off-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      b7a745dc