RE: [PATCH 1/1] X86: Mark the Hyper-V clocksource as being continuous

[KY Srinivasan]

> -----Original Message-----
> From: Jeff Leung [mailto:jleung@xxxxxxxxxxxxxx]
> Sent: Tuesday, December 2, 2014 3:58 PM
> To: KY Srinivasan; x86@xxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx;
> apw@xxxxxxxxxxxxx; jasowang@xxxxxxxxxx; tglx@xxxxxxxxxxxxx;
> hpa@xxxxxxxxx
> Cc: stable@xxxxxxxxxxxxxxx
> Subject: RE: [PATCH 1/1] X86: Mark the Hyper-V clocksource as being
> continuous
> 
> Does this mean that host-to guest timesync now works properly with Linux
> guests?
> 
> -- Jeff

Jeff,

We have had the Hyper-V clocksource for sometime now and this patch just marks this clocksource
as being continuous. Nothing has changed with regards to timesynch.

Regards,

K. Y 

> 
> > -----Original Message-----
> > From: linux-kernel-owner@xxxxxxxxxxxxxxx
> [mailto:linux-kernel-owner@xxxxxxxxxxxxxxx]
> > On Behalf Of K. Y. Srinivasan
> > Sent: Tuesday, December 2, 2014 17:04
> > To: x86@xxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx;
> > devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx; apw@xxxxxxxxxxxxx;
> > jasowang@xxxxxxxxxx; tglx@xxxxxxxxxxxxx; hpa@xxxxxxxxx
> > Cc: K. Y. Srinivasan; stable@xxxxxxxxxxxxxxx
> > Subject: [PATCH 1/1] X86: Mark the Hyper-V clocksource as being
> continuous
> >
> > The clocksource based on Hyper-V per-partition reference count MSR is
> continuous. Mark
> > it accordingly.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> > cc: stable@xxxxxxxxxxxxxxx
> > ---
> >  arch/x86/kernel/cpu/mshyperv.c |    1 +
> >  1 files changed, 1 insertions(+), 0 deletions(-)
> >
> > diff --git a/arch/x86/kernel/cpu/mshyperv.c
> b/arch/x86/kernel/cpu/mshyperv.c index
> > a450373..939155f 100644
> > --- a/arch/x86/kernel/cpu/mshyperv.c
> > +++ b/arch/x86/kernel/cpu/mshyperv.c
> > @@ -107,6 +107,7 @@ static struct clocksource hyperv_cs = {
> >  	.rating		= 400, /* use this when running on Hyperv*/
> >  	.read		= read_hv_clock,
> >  	.mask		= CLOCKSOURCE_MASK(64),
> > +	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
> >  };
> >
> >  static void __init ms_hyperv_init_platform(void)
> > --
> > 1.7.4.1
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in the body of a
> > message to majordomo@xxxxxxxxxxxxxxx More majordomo info at
> > http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/