diff options
| author | Pavel Dovgalyuk | 2018-01-11 09:24:58 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2018-01-12 13:22:02 +0100 |
| commit | 829600a519386c7b188d5d813e78ba69bf0bd323 (patch) | |
| tree | 9a6e6fe965845a0d23623b45b3c04bd4fd786c96 /include | |
| parent | pc: fail memory hot-plug/unplug with -no-acpi and Q35 machine type (diff) | |
| download | qemu-829600a519386c7b188d5d813e78ba69bf0bd323.tar.gz qemu-829600a519386c7b188d5d813e78ba69bf0bd323.tar.xz qemu-829600a519386c7b188d5d813e78ba69bf0bd323.zip | |
hpet: recover timer offset correctly
HPET saves its state by calculating the current time and recovers timer
offset using this calculated value. But these calculations include
divisions and multiplications. Therefore the timer state cannot be recovered
precise enough.
This patch introduces saving of the original value of the offset to
preserve the determinism of the timer.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
Reviewed-by: Juan Quintela <quintela@redhat.com>
--
v3: Added compat property for correct migration.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/compat.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/hw/compat.h b/include/hw/compat.h index 263de973a7..7f31850dfa 100644 --- a/include/hw/compat.h +++ b/include/hw/compat.h @@ -2,7 +2,11 @@ #define HW_COMPAT_H #define HW_COMPAT_2_11 \ - /* empty */ + {\ + .driver = "hpet",\ + .property = "hpet-offset-saved",\ + .value = "false",\ + }, #define HW_COMPAT_2_10 \ {\ |