Skip to content

Q
qemu

openeuler / qemu

通知 10
Star 0
Fork 0
Q
qemu

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 03 12月, 2013 2 次提交
  3. 21 9月, 2013 2 次提交
  5. 20 9月, 2013 1 次提交
  7. 10 9月, 2013 1 次提交
  9. 02 9月, 2013 4 次提交
  11. 28 8月, 2013 1 次提交
  13. 29 7月, 2013 2 次提交
  15. 18 7月, 2013 2 次提交
  17. 13 7月, 2013 1 次提交
    • C
      Force auto-convegence of live migration · 7ca1dfad
      由 Chegu Vinod 提交于 
      If a user chooses to turn on the auto-converge migration capability
these changes detect the lack of convergence and throttle down the
guest. i.e. force the VCPUs out of the guest for some duration
and let the migration thread catchup and help converge.

Verified the convergence using the following :
 - Java Warehouse workload running on a 20VCPU/256G guest(~80% busy)
 - OLTP like workload running on a 80VCPU/512G guest (~80% busy)

Sample results with Java warehouse workload : (migrate speed set to 20Gb and
migrate downtime set to 4seconds).

 (qemu) info migrate
 capabilities: xbzrle: off auto-converge: off  <----
 Migration status: active
 total time: 1487503 milliseconds
 expected downtime: 519 milliseconds
 transferred ram: 383749347 kbytes
 remaining ram: 2753372 kbytes
 total ram: 268444224 kbytes
 duplicate: 65461532 pages
 skipped: 64901568 pages
 normal: 95750218 pages
 normal bytes: 383000872 kbytes
 dirty pages rate: 67551 pages

 ---

 (qemu) info migrate
 capabilities: xbzrle: off auto-converge: on   <----
 Migration status: completed
 total time: 241161 milliseconds
 downtime: 6373 milliseconds
 transferred ram: 28235307 kbytes
 remaining ram: 0 kbytes
 total ram: 268444224 kbytes
 duplicate: 64946416 pages
 skipped: 64903523 pages
 normal: 7044971 pages
 normal bytes: 28179884 kbytes
Signed-off-by: NChegu Vinod <chegu_vinod@hp.com>
Signed-off-by: NJuan Quintela <quintela@redhat.com>
      7ca1dfad
  19. 28 6月, 2013 1 次提交
    • D
      block: add basic backup support to block driver · 98d2c6f2
      由 Dietmar Maurer 提交于 
      backup_start() creates a block job that copies a point-in-time snapshot
of a block device to a target block device.

We call backup_do_cow() for each write during backup. That function
reads the original data from the block device before it gets
overwritten.  The data is then written to the target device.

Currently backup cluster size is hardcoded to 65536 bytes.

[I made a number of changes to Dietmar's original patch and folded them
in to make code review easy.  Here is the full list:

 * Drop BackupDumpFunc interface in favor of a target block device
 * Detect zero clusters with buffer_is_zero() and use bdrv_co_write_zeroes()
 * Use 0 delay instead of 1us, like other block jobs
 * Unify creation/start functions into backup_start()
 * Simplify cleanup, free bitmap in backup_run() instead of cb
 * function
 * Use HBitmap to avoid duplicating bitmap code
 * Use bdrv_getlength() instead of accessing ->total_sectors
 * directly
 * Delete the backup.h header file, it is no longer necessary
 * Move ./backup.c to block/backup.c
 * Remove #ifdefed out code
 * Coding style and whitespace cleanups
 * Use bdrv_add_before_write_notifier() instead of blockjob-specific hooks
 * Keep our own in-flight CowRequest list instead of using block.c
   tracked requests.  This means a little code duplication but is much
   simpler than trying to share the tracked requests list and use the
   backup block size.
 * Add on_source_error and on_target_error error handling.
 * Use trace events instead of DPRINTF()

-- stefanha]
Signed-off-by: NDietmar Maurer <dietmar@proxmox.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      98d2c6f2
  21. 25 5月, 2013 1 次提交
  23. 24 5月, 2013 1 次提交
    • S
      coroutine: stop using AioContext in CoQueue · 02ffb504
      由 Stefan Hajnoczi 提交于 
      qemu_co_queue_next(&queue) arranges that the next queued coroutine is
run at a later point in time.  This deferred restart is useful because
the caller may not want to transfer control yet.

This behavior was implemented using QEMUBH in the past, which meant that
CoQueue (and hence CoMutex and CoRwlock) had a dependency on the
AioContext event loop.  This hidden dependency causes trouble when we
move to a world with multiple event loops - now qemu_co_queue_next()
needs to know which event loop to schedule the QEMUBH in.

After pondering how to stash AioContext I realized the best solution is
to not use AioContext at all.  This patch implements the deferred
restart behavior purely in terms of coroutines and no longer uses
QEMUBH.

Here is how it works:

Each Coroutine has a wakeup queue that starts out empty.  When
qemu_co_queue_next() is called, the next coroutine is added to our
wakeup queue.  The wakeup queue is processed when we yield or terminate.
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      02ffb504
  25. 20 5月, 2013 1 次提交
  27. 14 5月, 2013 2 次提交
  29. 13 5月, 2013 1 次提交
  31. 03 5月, 2013 2 次提交
  33. 02 5月, 2013 1 次提交
  35. 23 4月, 2013 1 次提交
  37. 19 4月, 2013 1 次提交
  39. 16 4月, 2013 6 次提交
    • G
      use libusb for usb-host · 2b2325ff
      由 Gerd Hoffmann 提交于 
      Reimplement usb-host on top of libusb.
Reasons to do this:

 (1) Largely rewritten from scratch, nice opportunity to kill historical
     cruft.
 (2) Offload usbfs handling to libusb.
 (3) Have a single portable code base instead of bsd + linux variants.
 (4) Bring usb-host support to any platform supported by libusbx.

For now this goes side-by-side to the existing code.  That is only to
simplify regression testing though, at the end of the day I want remove
the old code and support libusb exclusively.  Merge early in 1.5 cycle,
remove the old code after 1.5 release or something like this.

Thanks to qdev the old and new code can coexist nicely on linux.  Just
use "-device usb-host-linux" to use the old linux driver instead of the
libusb one (which takes over the "usb-host" name).

The bsd driver isn't qdev'ified so it isn't that easy for bsd.
I didn't bother making it runtime switchable, so you have to rebuild
qemu with --disable-libusb to get back the old code.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      2b2325ff
    • G
      xhci: fix portsc writes · bdfce20d
      由 Gerd Hoffmann 提交于 
      Check for port reset first and skip everything else then.
Add sanity checks for PLS updates.
Add PLC notification when entering PLS_U0 state.

This gets host-initiated port resume going on win8.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      bdfce20d
    • G
      console: gui timer fixes · 0f7b2864
      由 Gerd Hoffmann 提交于 
      Make gui update rate adaption code in gui_update() actually work.
Sprinkle in a tracepoint so you can see the code at work.  Remove
the update rate adaption code in vnc and make vnc simply use the
generic bits instead.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      0f7b2864
    • G
      console: add trace events · 437fe106
      由 Gerd Hoffmann 提交于 
      Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      437fe106
    • G
      hw/vmware_vga.c: various vmware vga fixes. · eb2f9b02
      由 Gerd Hoffmann 提交于 
      Hardcode depth to 32 bpp.  It effectively was that way before because
that is the default surface depth, this just makes it explicit in the
code.

Rename depth to new_depth to make it consistent with the new_width +
new_height names.  In theory we can make new_depth changeable (i.e.
allow the guest to fill in -- say -- 16 there).  In practice the guests
don't try, the X-Server refuses to start if you ask it to use 16bpp
depth (via DefaultDepth in the Screen section).

Always return the correct rmask+gmask+bmask values for the given
new_depth.

Fix mode setting to also verify at new_depth to make sure we have a
correct DisplaySurface, even if the current video mode happes to be
16bpp (set by vgabios via bochs vbe interface).  While being at it
switch over to use qemu_create_displaysurface_from, so the surface is
backed by guest-visible video memory and we save a memcpy.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      eb2f9b02
    • G
      hw/vmware_vga.c: add tracepoints for mmio reads+writes · 7a6404cd
      由 Gerd Hoffmann 提交于 
      Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
      7a6404cd
  41. 03 4月, 2013 1 次提交
  43. 28 3月, 2013 3 次提交
  45. 18 3月, 2013 2 次提交