Messages in this thread | | | Date | Wed, 09 Dec 2015 16:00:21 +0100 | From | Sander Eikelenboom <> | Subject | Re: [Xen-devel] [PATCH] x86: Xen PV guests don't have the rtc cmos platform device |
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On 2015-12-09 15:42, Jan Beulich wrote: >>>> On 09.12.15 at 15:32, <boris.ostrovsky@oracle.com> wrote: >> --- a/arch/x86/kernel/rtc.c >> +++ b/arch/x86/kernel/rtc.c >> @@ -200,6 +200,9 @@ static __init int add_rtc_cmos(void) >> } >> #endif >> >> + if (paravirt_enabled()) >> + return -ENODEV; > > What about Xen Dom0? > > Jan
Checked that in my testing and that still worked: [ 16.733837] rtc_cmos 00:02: RTC can wake from S4 [ 16.734030] rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0 [ 16.734087] rtc_cmos 00:02: alarms up to one month, y3k, 114 bytes nvram [ 17.760329] rtc_cmos 00:02: setting system clock to 2015-12-09 08:43:48 UTC (1449650628)
and /dev/rtc and /dev/rtc0 both exist.
But i don't know the nitty gritty details about why ... -- Sander
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