| Message ID | cf52eb15927d5517f9d525f6541b366a5b898af3.1539778764.git.artem.k.pisarenko@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Fix and improve core RTC function and documentation | expand |
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).
I fixed them and ready to submit v3. Anything else ? ср, 17 окт. 2018 г. в 20:01, 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 <(919)%20301-3266> > Virtualization: qemu.org | libvirt.org >
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). # # Note: This event is rate-limited. # diff --git a/vl.c b/vl.c index 78a8a68..c350aba 100644 --- a/vl.c +++ b/vl.c @@ -788,10 +788,10 @@ void qemu_system_vmstop_request(RunState state) /***********************************************************/ /* RTC reference time/date access */ -static time_t qemu_ref_timedate(void) +static time_t qemu_ref_timedate(QEMUClockType clock) { - time_t value = qemu_clock_get_ms(rtc_clock) / 1000; - switch (rtc_clock) { + time_t value = qemu_clock_get_ms(clock) / 1000; + switch (clock) { case QEMU_CLOCK_REALTIME: value -= rtc_realtime_clock_offset; /* no break */ @@ -811,7 +811,7 @@ static time_t qemu_ref_timedate(void) void qemu_get_timedate(struct tm *tm, int offset) { - time_t ti = qemu_ref_timedate(); + time_t ti = qemu_ref_timedate(rtc_clock); ti += offset; @@ -849,7 +849,7 @@ int qemu_timedate_diff(struct tm *tm) break; } - return seconds - qemu_ref_timedate(); + return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST); } static void configure_rtc_base_datetime(const char *startdate)
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. Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com> --- qapi/misc.json | 3 ++- vl.c | 10 +++++----- 2 files changed, 7 insertions(+), 6 deletions(-)