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  1. 14 10月, 2008 2 次提交
  3. 13 10月, 2008 3 次提交
  5. 12 10月, 2008 1 次提交
  7. 09 10月, 2008 1 次提交
    • A
      Fix IO performance regression in sparc · 9e472e10
      由 aliguori 提交于 
      Replace signalfd with signal handler/pipe.  There is no way to interrupt
the CPU execution loop when a file descriptor becomes readable.  This
results in a large performance regression in sparc emulation during
bootup.
   
This patch switches us to signal handler/pipe which was originally
suggested by Ian Jackson.  The signal handler lets us interrupt the
CPU emulation loop while the write to a pipe lets us avoid the
select/signal race condition.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5451 c046a42c-6fe2-441c-8c8c-71466251a162
      9e472e10
  9. 08 10月, 2008 1 次提交
  11. 07 10月, 2008 1 次提交
    • A
      Switch the memory savevm handler to be "live" · 475e4277
      由 aliguori 提交于 
      This patch replaces the static memory savevm/loadvm handler with a "live" one.
This handler is used even if performing a non-live migration.

The key difference between this handler and the previous is that each page is
prefixed with the address of the page.  The QEMUFile rate limiting code, in
combination with the live migration dirty tracking bits, is used to determine
which pages should be sent and how many should be sent.

The live save code "converges" when the number of dirty pages reaches a fixed
amount.  Currently, this is 10 pages.  This is something that should eventually
be derived from whatever the bandwidth limitation is.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5437 c046a42c-6fe2-441c-8c8c-71466251a162
      475e4277
  13. 06 10月, 2008 1 次提交
    • A
      Introduce v3 of savevm protocol · 9366f418
      由 aliguori 提交于 
      The current savevm/loadvm protocol has some draw backs.  It does not support
the ability to do progressive saving which means it cannot be used for live
checkpointing or migration.  The sections sizes are 32-bit integers which
means that it will not function when using more than 4GB of memory for a guest.
It attempts to seek within the output file which means it cannot be streamed.
The current protocol also is pretty lax about how it supports forward
compatibility.  If a saved section version is greater than what the restore
code support, the restore code generally treats the saved data as being in
whatever version it supports.  This means that restoring a saved VM on an older
version of QEMU will likely result in silent guest failure.

This patch introduces a new version of the savevm protocol.  It has the
following features:

 * Support for progressive save of sections (for live checkpoint/migration)
 * An asynchronous API for doing save
 * Support for interleaving multiple progressive save sections
   (for future support of memory hot-add/storage migration)
 * Fully streaming format
 * Strong section version checking
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5434 c046a42c-6fe2-441c-8c8c-71466251a162
      9366f418
  15. 05 10月, 2008 1 次提交
  17. 04 10月, 2008 2 次提交
  19. 03 10月, 2008 1 次提交
  21. 02 10月, 2008 3 次提交
  23. 01 10月, 2008 3 次提交
  25. 30 9月, 2008 1 次提交
  27. 29 9月, 2008 2 次提交
  29. 28 9月, 2008 2 次提交
  31. 26 9月, 2008 1 次提交
  33. 23 9月, 2008 1 次提交
  35. 20 9月, 2008 1 次提交
  37. 19 9月, 2008 1 次提交
  39. 15 9月, 2008 1 次提交
    • A
      Use common objects for qemu-img and qemu-nbd · 03ff3ca3
      由 aliguori 提交于 
      Right now, we sprinkle #if defined(QEMU_IMG) && defined(QEMU_NBD) all over the
code.  It's ugly and causes us to have to build multiple object files for
linking against qemu and the tools.

This patch introduces a new file, qemu-tool.c which contains enough for
qemu-img, qemu-nbd, and QEMU to all share the same objects.

This also required getting qemu-nbd to be a bit more Windows friendly.  I also
changed the Windows block-raw to use normal IO instead of overlapping IO since
we don't actually do AIO yet on Windows.  I changed the various #if 0's to
 #if WIN32_AIO to make it easier for someone to eventually fix AIO on Windows.

After this patch, there are no longer any #ifdef's related to qemu-img and
qemu-nbd.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5226 c046a42c-6fe2-441c-8c8c-71466251a162
      03ff3ca3
  41. 14 9月, 2008 3 次提交
  43. 10 9月, 2008 2 次提交
  45. 03 9月, 2008 1 次提交
  47. 29 8月, 2008 1 次提交
  49. 24 8月, 2008 1 次提交
  51. 22 8月, 2008 2 次提交