[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH 1/2] x86/xen: sync the CMOS RTC as well as the Xen wallclock

On 05/28/2013 11:22 AM, David Vrabel wrote:
From: David Vrabel <david.vrabel@xxxxxxxxxx>

Adjustments to Xen's persistent_clock via update_persistent_clock()
don't actually persist, as the xen_set_walltime() just notifies other
domN guests that it has been updated, and does not modify the
underlying CMOS clock.

Thus, this patch modifies xen_set_wallclock() so it will set the
underlying CMOS clock when called from dom0, ensuring the
persistent_clock will be correct on the next hardware boot.

Dom0 does not support accessing EFI runtime services and Xen does not
run on Moorsetown platforms so the CMOS RTC is the only supported
hardware clock.

Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Ok, I've queued this for 3.11.


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.