Re: [GIT pull] x86/timers for 4.10
From: Thomas Gleixner
Date: Thu Feb 09 2017 - 10:21:45 EST
On Thu, 9 Feb 2017, Mike Galbraith wrote:
> On Thu, 2017-02-09 at 16:07 +0100, Thomas Gleixner wrote:
> > On Wed, 8 Feb 2017, Mike Galbraith wrote:
> > > On Wed, 2017-02-08 at 12:44 +0100, Thomas Gleixner wrote:
> > > > On Mon, 6 Feb 2017, Olof Johansson wrote:
> > > > > [ 0.177102] [Firmware Bug]: TSC ADJUST differs: Reference CPU0:
> > > > > -6495898515190607 CPU1: -6495898517158354
> > > >
> > > > Yay, another "clever" BIOS ....
> > >
> > > Oh yeah, that reminds me...
> > >
> > > I met one such box, and the adjustment code did salvage it, but I had
> > > to cheat a little for it to do so reliably, as it would sometimes still
> > > see a delta of 1 or 2 whole cycles, and hand me a useless wreck instead
> > > quick like bunny big box.
> > Can you share your cheatery ?
> I didn't keep it, it was just a bandaid for a fleeting use, dirt simple
> ignore microscopic delta.
Can you send me the dmesg output of that box for a good and a bad case or
don't you have access to it anymore?