Mikael Pettersson writes: > When I run the ia64 kernel (3.12, CONFIG_IA64_HP_SIM=y) on ski (1.3.2, > x86_64 host with 3.13-rc6 kernel), the clock (as reported by `date`) > runs way too fast. 10 seconds on the host is reported as about 211 > seconds in the guest, with about 6763 timer ticks delta in /proc/interrupts. > > The output from /sbin/hwclock advances at the correct rate, however. > > Any ideas what might be causing this? Kernel bug or ski bug? Answering my own question: They're both buggy. Ski is buggy for incrementing the ITC based on how fast it emulates instructions, leading to an ITC frequency that is variable and mostly a function of the host platform. The kernel is buggy for inventing ITC-related SAL/PAL FREQ values out of thin air, that have no relation whatsoever to the actual ITC frequency in ski. I'm going to implement a known-frequency ITC in ski. /Mikael -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html