[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] RE: Bizarre pv kernel ultra-high frequency rdtsc?!?
Yes, that does indeed fix it. Thanks very much! Now, onward to scaling! (Necessary when the PV kernel boots on "tsc safe" hardware but then migrates.) Thanks again! Dan > -----Original Message----- > From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx] > Sent: Saturday, November 21, 2009 2:45 PM > To: Dan Magenheimer; Jeremy Fitzhardinge > Cc: Xen-Devel (E-mail) > Subject: Re: Bizarre pv kernel ultra-high frequency rdtsc?!? > > > On 20/11/2009 23:45, "Dan Magenheimer" > <dan.magenheimer@xxxxxxxxxx> wrote: > > > - _u.tsc_timestamp = t->stime_local_stamp; > > - _u.system_time = t->stime_local_stamp; > > + _u.tsc_timestamp = t->stime_local_stamp - BIG_OFFSET; > > + _u.system_time = t->stime_local_stamp - BIG_OFFSET; > > Ah, the line above is the bug. You should be subtracting > BIG_OFFSET from > _u.tsc_timestamp only. Leave _u.system_time as it is. That'll > fix all your > observed problems. > > -- Keir > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |