Messages in this thread | | | Subject | Re: tsc: Fast TSC calibration failed with AMD B350M/Ryzen 3 2200G | From | Paul Menzel <> | Date | Tue, 22 Jan 2019 17:53:40 +0100 |
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[Adding Tom to CC]
Dear Thomas, dear Tom,
On 01/14/19 11:09, Paul Menzel wrote:
> On 01/11/19 21:43, Thomas Gleixner wrote: > >> On Mon, 7 Jan 2019, Paul Menzel wrote: >>> On 01/07/19 16:24, Thomas Gleixner wrote: >>>>> Linux 4.19.13 from Debian Sid/unstable logs the message below on the board MSI >>>>> MS-7A37/B350M MORTAR with the processor AMD Ryzen 3 2200G. >>>>> >>>>> As a result, the early time stamps do not seem to be working. >>>> >>>>>> [ 0.000000] DMI: Micro-Star International Co., Ltd. MS-7A37/B350M MORTAR (MS-7A37), BIOS 1.I0 11/06/2018 >>>>>> [ 0.000000] tsc: Fast TSC calibration failed >>>> >>>> And the further boot log says: >>>> >>>> [ 0.036000] tsc: Unable to calibrate against PIT >>>> [ 0.036000] tsc: using HPET reference calibration >>>> [ 0.036000] tsc: Detected 3500.117 MHz processor >>>> >>>> So the quick calibration in early boot fails because the PIT seems not to >>>> do what the kernel expects. Nothing we can cure :( >>> >>> I see. Can AMD confirm that this is the expected behavior? If yes, should >>> the fast TSC calibration be skipped on these devices? >> >> It should work and we really don't want to add cpu family/model based >> decisions whether we invoke something or not. Those tables are stale before >> they hit mainline. > > Understood. If it’s supposed to work, any hints on how to debug this? > > Does some Linux kernel developers have an AMD Ryzen system, and can reproduce > the issue? > > It seems to fail with an AMD Ryzen 2400G too [1].
We now have an HP EliteDesk 705 G4 MT with that processsor, showing the same problem.
``` [ 0.000000] Linux version 4.20.0.mx64.238 (root@elcattivo.molgen.mpg.de) (gcc version 7.3.0 (GCC)) #1 SMP Mon Dec 24 14:50:00 CET 2018 […] [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 3.1 present. [ 0.000000] DMI: HP HP EliteDesk 705 G4 MT/83E7, BIOS Q06 Ver. 02.04.01 09/14/2018 [ 0.000000] tsc: Fast TSC calibration failed [ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved […] [ 0.017860] smpboot: CPU0: AMD Ryzen 5 PRO 2400G with Radeon Vega Graphics (family: 0x17, model: 0x11, stepping: 0x0) […] ```
> It also fails on an AMD Ryzen 7 1700 [2]. > > ``` > [ 0.000000] Linux version 4.15.0-kali3-amd64 (devel@kali.org) (gcc version 7.3.0 (Debian 7.3.0-16)) #1 SMP Debian 4.15.17-1kali1 (2018-04-25) > […] > [ 0.008000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > [ 0.028000] tsc: Fast TSC calibration failed > [ 0.032000] tsc: PIT calibration matches HPET. 1 loops > [ 0.032000] tsc: Detected 2994.246 MHz processor > […] > [ 0.044000] smpboot: CPU0: AMD Ryzen 7 1700 Eight-Core Processor (family: 0x17, model: 0x1, stepping: 0x1) > ``` > > It *works* here on one system with AMD Ryzen 5 PRO 1500 and Linux 4.14.87. > > ``` > [ 0.000000] Linux version 4.14.87.mx64.236 (root@likearollingstone.molgen.mpg.de) (gcc version 7.3.0 (GCC)) #1 SMP Mon Dec 10 09:48:57 CET 2018 > […] > [ 0.000000] tsc: Fast TSC calibration using PIT > […] > [ 0.035000] smpboot: CPU0: AMD Ryzen 5 PRO 1500 Quad-Core Processor (family: 0x17, model: 0x1, stepping: 0x1) > ```
How to continue from here? Is documentation for that available from AMD? I didn’t find a BKDG (Bios Kernel Developer Guide) at [3].
Kind regards,
Paul
> [1]: https://bbs.archlinux.org/viewtopic.php?pid=1781282#p1781282 > [2]: https://forums.kali.org/showthread.php?40444-error-loading-amdgpu-drivers-AMD-RX580-driver[3]: https://developer.amd.com/resources/developer-guides-manuals/
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