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[Qemu-devel] [RFC PATCH v4 01/25] acpi: accurate overflow check
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [RFC PATCH v4 01/25] acpi: accurate overflow check |
Date: |
Fri, 07 Nov 2014 13:31:33 +0300 |
User-agent: |
StGit/0.16 |
Compare clock in ns, because acpi_pm_tmr_update uses rounded
to ns value instead of ticks.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
hw/acpi/core.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index a7368fb..51913d6 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -376,8 +376,11 @@ static void acpi_notify_wakeup(Notifier *notifier, void
*data)
/* ACPI PM1a EVT */
uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar)
{
- int64_t d = acpi_pm_tmr_get_clock();
- if (d >= ar->tmr.overflow_time) {
+ /* Compare ns-clock, not PM timer ticks, because
+ acpi_pm_tmr_update function uses ns for setting the timer. */
+ int64_t d = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ if (d >= muldiv64(ar->tmr.overflow_time,
+ get_ticks_per_sec(), PM_TIMER_FREQUENCY)) {
ar->pm1.evt.sts |= ACPI_BITMASK_TIMER_STATUS;
}
return ar->pm1.evt.sts;
- [Qemu-devel] [RFC PATCH v4 00/25] Deterministic replay and reverse execution, Pavel Dovgalyuk, 2014/11/07
- [Qemu-devel] [RFC PATCH v4 01/25] acpi: accurate overflow check,
Pavel Dovgalyuk <=
- [Qemu-devel] [RFC PATCH v4 02/25] mc146818rtc: add missed field to vmstate, Pavel Dovgalyuk, 2014/11/07
- [Qemu-devel] [RFC PATCH v4 03/25] replay: global variables and function stubs, Pavel Dovgalyuk, 2014/11/07
- [Qemu-devel] [RFC PATCH v4 04/25] sysemu: system functions for replay, Pavel Dovgalyuk, 2014/11/07
- [Qemu-devel] [RFC PATCH v4 05/25] replay: internal functions for replay log, Pavel Dovgalyuk, 2014/11/07
- [Qemu-devel] [RFC PATCH v4 06/25] cpu-exec: reset exception_index correctly, Pavel Dovgalyuk, 2014/11/07