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[Qemu-devel] [PATCH v4 0/4] Fix -icount with iothread

From: Paolo Bonzini
Subject: [Qemu-devel] [PATCH v4 0/4] Fix -icount with iothread
Date: Wed, 13 Apr 2011 10:03:42 +0200

This series finally fixes -icount with iothread and avoids deadlocks
due to the vm_clock not making progress when the VM is stopped.
The crux of the fix is in patch 1, while patch 2 implements the
"clock warping" that fixes deadlocks in v2.  Clock warping uses
the nanosecond resolution rt_clock timers introduced by my previous

With this in place, patch 3 can revert the previous attempt(s).
Finally, patch 4 makes the icount code clearer by finishing the
bugfix/reorganization of qemu_next_deadline vs. qemu_next_alarm_deadline.

        reordered patches, renamed qemu_next_deadline

        introduced warp timer

        added comments to the code

Paolo Bonzini (4):
  really fix -icount in the iothread case
  enable vm_clock to "warp" in the iothread+icount case
  Revert wrong fixes for -icount in the iothread case
  qemu_next_deadline should not consider host-time timers

 cpus.c        |   13 ++++-
 qemu-common.h |    1 +
 qemu-timer.c  |  169 ++++++++++++++++++++++++++++++++++++++++++++-------------
 qemu-timer.h  |    3 +-
 roms/seabios  |    2 +-
 5 files changed, 146 insertions(+), 42 deletions(-)


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