Re: [BUG] Linux 5.3-rc1: timer problem on x86-64 (Pentium D)

2019-07-25 Thread Rui Salvaterra
Hi, Thomas, On Thu, 25 Jul 2019 at 10:37, Thomas Gleixner wrote: > > Duh. Yes, this explains it nicely. > > > [1.123548] clocksource: timekeeping watchdog on CPU1: Marking > > clocksource 'tsc-early' as unstable because the skew is too large: > > [1.123552] clocksource:

Re: [BUG] Linux 5.3-rc1: timer problem on x86-64 (Pentium D)

2019-07-25 Thread Thomas Gleixner
Rui, On Thu, 25 Jul 2019, Rui Salvaterra wrote: > On Thu, 25 Jul 2019 at 07:28, Thomas Gleixner wrote: > > > > The only reason I can think of is that the HPET on that machine has a weird > > register state (it's not advertised by the BIOS ... ) > > > > But that does not explain the boot failure c

Re: [BUG] Linux 5.3-rc1: timer problem on x86-64 (Pentium D)

2019-07-24 Thread Thomas Gleixner
Rui, On Thu, 25 Jul 2019, Rui Salvaterra wrote: > Looks like we have a winner. Actually, I did a full bisection between > 5.2 and 5.3-rc1. Full log follows: > > git bisect start > # good: [0ecfebd2b52404ae0c54a878c872bb93363ada36] Linux 5.2 > git bisect good 0ecfebd2b52404ae0c54a878c872bb93363ada

Re: [BUG] Linux 5.3-rc1: timer problem on x86-64 (Pentium D)

2019-07-24 Thread Rui Salvaterra
On Wed, 24 Jul 2019 at 12:02, Thomas Gleixner wrote: > > Rui, > > On Wed, 24 Jul 2019, Rui Salvaterra wrote: > > I don't know if this has been reported before, but from a cursory > > search it doesn't seem to be the case. > > I have a x86-64 Pentium (4) D machine which always worked perfectly > >

Re: [BUG] Linux 5.3-rc1: timer problem on x86-64 (Pentium D)

2019-07-24 Thread Thomas Gleixner
Rui, On Wed, 24 Jul 2019, Rui Salvaterra wrote: > I don't know if this has been reported before, but from a cursory > search it doesn't seem to be the case. > I have a x86-64 Pentium (4) D machine which always worked perfectly > with Linux 5.2 using the TSC as the clock source. With Linux 5.3-rc1