[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PULL 30/47] timer: introduce new QEMU_CLOCK_VIRTUAL_RT clo
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 30/47] timer: introduce new QEMU_CLOCK_VIRTUAL_RT clock |
Date: |
Mon, 15 Dec 2014 17:38:14 +0100 |
From: Pavel Dovgalyuk <address@hidden>
This patch introduces new QEMU_CLOCK_VIRTUAL_RT clock, which
should be used for icount warping. In the next patch, it
will be used to avoid a huge icount warp when a virtual
machine is stopped for a long time.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
include/qemu/timer.h | 7 +++++++
qemu-timer.c | 2 ++
2 files changed, 9 insertions(+)
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 3dae414..552487c 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -36,12 +36,19 @@
* is suspended, and it will reflect system time changes the host may
* undergo (e.g. due to NTP). The host clock has the same precision as
* the virtual clock.
+ *
+ * @QEMU_CLOCK_VIRTUAL_RT: realtime clock used for icount warp
+ *
+ * Outside icount mode, this clock is the same as @QEMU_CLOCK_VIRTUAL.
+ * In icount mode, this clock counts nanoseconds while the virtual
+ * machine is running.
*/
typedef enum {
QEMU_CLOCK_REALTIME = 0,
QEMU_CLOCK_VIRTUAL = 1,
QEMU_CLOCK_HOST = 2,
+ QEMU_CLOCK_VIRTUAL_RT = 3,
QEMU_CLOCK_MAX
} QEMUClockType;
diff --git a/qemu-timer.c b/qemu-timer.c
index 00a5d35..f4b4b6a 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -566,6 +566,8 @@ int64_t qemu_clock_get_ns(QEMUClockType type)
notifier_list_notify(&clock->reset_notifiers, &now);
}
return now;
+ case QEMU_CLOCK_VIRTUAL_RT:
+ return cpu_get_clock();
}
}
--
1.8.3.1
- [Qemu-devel] [PULL 26/47] cpu-exec: reset exception_index correctly, (continued)
- [Qemu-devel] [PULL 27/47] icount: set can_do_io outside TB execution, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 25/47] cpu-exec: fix cpu_exec_nocache, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 28/47] icount: introduce cpu_get_icount_raw, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 29/47] cpu-exec: invalidate nocache translation if they are interrupted, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 30/47] timer: introduce new QEMU_CLOCK_VIRTUAL_RT clock,
Paolo Bonzini <=
- [Qemu-devel] [PULL 31/47] cpus: make icount warp behave well with respect to stop/cont, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 32/47] i386: do not cross the pages boundaries in replay mode, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 34/47] target-i386: add VME to all CPUs, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 33/47] pc: add 2.3 machine types, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 35/47] target-i386: add f16c and rdrand to Haswell and Broadwell, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 36/47] target-i386: add Ivy Bridge CPU model, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 38/47] linuxboot: fix loading old kernels, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 37/47] kvm/apic: fix 2.2->2.1 migration, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 39/47] serial: reset thri_pending on IER writes with THRI=0, Paolo Bonzini, 2014/12/15
- [Qemu-devel] [PULL 40/47] serial: clean up THRE/TEMT handling, Paolo Bonzini, 2014/12/15