[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Time Skewing on Windows XP
>>> On 14.03.13 at 16:16, Suravee Suthikulanit <suravee.suthikulpanit@xxxxxxx> >>> wrote: > I finally traced the issue back to the patch that this first happened. This > bug started in the patch : > > H86/HVM: assorted RTC emulation adjustment (w/ git commit id > 620d5dad54008e40798c4a0c4322aef274c36fa3) > > I believe there are some issues with the changes in rtc_ioport_read in the > arch/x86/hvm/rtc.c and in the pt_update_irq(). One thing you may want to try is remove the call from REG_C read to rtc_timer_update() again - on a second thought it may be wrong to do it here, as (other than check_update_timer() and alarm_timer_update()) the function doesn't change with RTC_PF getting cleared (i.e. I may have wrongly added the call in analogy to the other two). I would expect the issue to be that create_periodic_time() pointlessly destroys and then recreates an identical rate timer. I'm puzzled though that some Windows versions depend on the RTC to maintain their wall clock time... Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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