Hi Heinrich,

On Thu, May 17, 2018 at 11:51 PM, Heinrich Schuchardt xypron.glpk@gmx.de wrote:

Hello Bin, Simon,

sometimes qemu-x86_64_defconfig fails with panic("TSC frequency is ZERO") in drivers/timer/tsc_timer.c.

The system may hang in an endless reboot loop with this error or recover after reboot.

Do we need to panic? Or could we use some default value?

Qemu version used for testing: 2.8.1.

Sorry I missed this. It seems that the TSC calibration is unstable on QEMU. I see this sometimes with '-nographic' but sometimes with 'graphic' too. I will take a look.

Regards, Bin