From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:45046) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S4TuV-0004KW-7S for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:09:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S4TuB-0002aF-5Q for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:08:50 -0500 Received: from mail-pw0-f45.google.com ([209.85.160.45]:35032) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S4TuA-0002ZD-Tt for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:08:31 -0500 Received: by mail-pw0-f45.google.com with SMTP id uo5so4074065pbc.4 for ; Mon, 05 Mar 2012 01:08:30 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Mon, 5 Mar 2012 10:08:11 +0100 Message-Id: <1330938495-30573-2-git-send-email-pbonzini@redhat.com> In-Reply-To: <1330938495-30573-1-git-send-email-pbonzini@redhat.com> References: <1330938495-30573-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH v2 1/5] rtc: add -rtc clock=rt List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org This will let people use backwards-compatible semantics for devices that will be affected by the following patches. Signed-off-by: Paolo Bonzini --- 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 b129996..44af861 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2436,7 +2436,7 @@ 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) @@ -2452,8 +2452,9 @@ 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 4a77696..510609e 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 { -- 1.7.7.6