Re: [Qemu-devel] [PATCH v2 4/4] vl, qapi: offset value calculation in RTC_CHANGE event reverted to match behavior before #1797033 bugfix and documented

[Eric Blake <eblake@redhat.com>]

On 10/17/18 7:23 AM, Artem Pisarenko wrote:
> Return value of qemu_timedate_diff(), used for calculation offset in QAPI 'RTC_CHANGE' event restored to keep compatibility, although it isn't documented that difference is relative to host clock advancement.
> Added important note to 'RTC_CHANGE' event description to highlight established implementation specifics.
> 

Hmm, I just replied to v1 before seeing that you sent v2; my comments 
about long lines and a typo still apply.

> Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
> ---
>   qapi/misc.json |  3 ++-
>   vl.c           | 10 +++++-----
>   2 files changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/qapi/misc.json b/qapi/misc.json
> index ada9af5..ed866f2 100644
> --- a/qapi/misc.json
> +++ b/qapi/misc.json
> @@ -3070,7 +3070,8 @@
>   # Emitted when the guest changes the RTC time.
>   #
>   # @offset: offset between base RTC clock (as specified by -rtc base), and
> -#          new RTC clock value
> +#          new RTC clock value. Note that value will be different depending
> +#          on clock choosen to drive RTC (specified by -rtc clock).
-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org