From: Marcelo Tosatti <mtosatti@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>, qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] RTC: enable lost_tick_policy=slew as default
Date: Tue, 11 Dec 2012 19:49:17 -0200 [thread overview]
Message-ID: <20121211214916.GA3871@amt.cnet> (raw)
RTC interrupt reinjection has no known negative effect. Lack of
RTC interrupt reinjection, though, has negative effects: time drift
for Windows guests which use it as a timer source.
Based on that, enable lost_tick_policy=slew option as default.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c
index c79fca7..c9e007d 100644
--- a/hw/mc146818rtc.c
+++ b/hw/mc146818rtc.c
@@ -884,7 +884,7 @@ ISADevice *rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
static Property mc146818rtc_properties[] = {
DEFINE_PROP_INT32("base_year", RTCState, base_year, 1980),
DEFINE_PROP_LOSTTICKPOLICY("lost_tick_policy", RTCState,
- lost_tick_policy, LOST_TICK_DISCARD),
+ lost_tick_policy, LOST_TICK_SLEW),
DEFINE_PROP_END_OF_LIST(),
};
next reply other threads:[~2012-12-11 21:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-11 21:49 Marcelo Tosatti [this message]
2012-12-12 8:43 ` [Qemu-devel] [PATCH] RTC: enable lost_tick_policy=slew as default Paolo Bonzini
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