diff options
author | Jan Kiszka <jan.kiszka@siemens.com> | 2012-01-23 20:15:11 +0100 |
---|---|---|
committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-02-01 14:45:01 -0600 |
commit | 4e4fa398db69e22dcad23114eb7e33b4d89b10c4 (patch) | |
tree | 81164d18007857c81ed538a4a610578a40d28829 /qemu-common.h | |
parent | 67ed96f9f25ddd69e23c455d44d389054addf165 (diff) | |
download | hqemu-4e4fa398db69e22dcad23114eb7e33b4d89b10c4.zip hqemu-4e4fa398db69e22dcad23114eb7e33b4d89b10c4.tar.gz |
qdev: Introduce lost tick policy property
Potentially tick-generating timer devices will gain a common property:
lock_tick_policy. It allows to encode 4 different ways how to deal with
tick events the guest did not process in time:
discard - ignore lost ticks (e.g. if the guest compensates for them
already)
delay - replay all lost ticks in a row once the guest accepts them
again
merge - if multiple ticks are lost, all of them are merged into one
which is replayed once the guest accepts it again
slew - lost ticks are gradually replayed at a higher frequency than
the original tick
Not all timer device will need to support all modes. However, all need
to accept the configuration via this common property.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-common.h')
-rw-r--r-- | qemu-common.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/qemu-common.h b/qemu-common.h index 6ab7dfb..8b69a9e 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -250,6 +250,13 @@ typedef struct QEMUSGList QEMUSGList; typedef uint64_t pcibus_t; +typedef enum LostTickPolicy { + LOST_TICK_DISCARD, + LOST_TICK_DELAY, + LOST_TICK_MERGE, + LOST_TICK_SLEW, +} LostTickPolicy; + void tcg_exec_init(unsigned long tb_size); bool tcg_enabled(void); |