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[Qemu-devel] [PATCH 1/5] rtc: add -rtc clock=rt
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 1/5] rtc: add -rtc clock=rt |
Date: |
Fri, 30 Mar 2012 11:39:09 +0100 |
From: Paolo Bonzini <address@hidden>
This will let people use backwards-compatible semantics for devices that
will be affected by the following patches.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
qemu-options.hx | 7 ++++---
vl.c | 2 ++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/qemu-options.hx b/qemu-options.hx
index 662f571..a6cd8e9 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2453,7 +2453,7 @@ DEF("localtime", 0, QEMU_OPTION_localtime, "",
QEMU_ARCH_ALL)
DEF("startdate", HAS_ARG, QEMU_OPTION_startdate, "", QEMU_ARCH_ALL)
DEF("rtc", HAS_ARG, QEMU_OPTION_rtc, \
- "-rtc [base=utc|localtime|date][,clock=host|vm][,driftfix=none|slew]\n" \
+ "-rtc [base=utc|localtime|date][,clock=host|rt|vm][,driftfix=none|slew]\n"
\
" set the RTC base and clock, enable drift fix for clock
ticks (x86 only)\n",
QEMU_ARCH_ALL)
@@ -2469,8 +2469,9 @@ format @code{2006-06-17T16:01:21} or @code{2006-06-17}.
The default base is UTC.
By default the RTC is driven by the host system time. This allows to use the
RTC as accurate reference clock inside the guest, specifically if the host
time is smoothly following an accurate external reference clock, e.g. via NTP.
-If you want to isolate the guest time from the host, even prevent it from
-progressing during suspension, you can set @option{clock} to @code{vm} instead.
+If you want to isolate the guest time from the host, you can set @option{clock}
+to @code{rt} instead. To even prevent it from progressing during suspension,
+you can set it to @code{vm}.
Enable @option{driftfix} (i386 targets only) if you experience time drift
problems,
specifically with Windows' ACPI HAL. This option will try to figure out how
diff --git a/vl.c b/vl.c
index 0fccf50..71a4755 100644
--- a/vl.c
+++ b/vl.c
@@ -529,6 +529,8 @@ static void configure_rtc(QemuOpts *opts)
if (value) {
if (!strcmp(value, "host")) {
rtc_clock = host_clock;
+ } else if (!strcmp(value, "rt")) {
+ rtc_clock = rt_clock;
} else if (!strcmp(value, "vm")) {
rtc_clock = vm_clock;
} else {
--
1.7.1
- [Qemu-devel] [PULL 0/5] arm-devs queue, Peter Maydell, 2012/03/30
- [Qemu-devel] [PATCH 4/5] pl031: rearm alarm timer upon load, Peter Maydell, 2012/03/30
- [Qemu-devel] [PATCH 2/5] omap: switch omap_lpg to vm_clock, Peter Maydell, 2012/03/30
- [Qemu-devel] [PATCH 5/5] pl031: switch clock base to rtc_clock, Peter Maydell, 2012/03/30
- [Qemu-devel] [PATCH 1/5] rtc: add -rtc clock=rt,
Peter Maydell <=
- [Qemu-devel] [PATCH 3/5] arm: switch real-time clocks to rtc_clock, Peter Maydell, 2012/03/30
- Re: [Qemu-devel] [PULL 0/5] arm-devs queue, Blue Swirl, 2012/03/31