Re: [PATCH] x86 tsc: Add the Intel Denverton Processor to native_calibrate_tsc()

2017-01-23 Thread Len Brown
> Already upstream, as per: > > 695085b4bc76 x86/tsc: Add the Intel Denverton Processor to > native_calibrate_tsc() Thanks, Ingo, Sorry for the repeat. Len Brown, Intel Open Source Technology Center

Re: [PATCH] x86 tsc: Add the Intel Denverton Processor to native_calibrate_tsc()

2017-01-22 Thread Ingo Molnar
* Len Brown wrote: > From: Len Brown > > The Intel Denverton microserver uses a 25 MHz TSC crystal, > so we can derive its exact * TSC frequency > using CPUID and some arithmetic, eg. > > TSC: 1800 MHz (2500 Hz * 216 / 3 / 100) > > * 'exact' is only as good as the crystal, which shou

[PATCH] x86 tsc: Add the Intel Denverton Processor to native_calibrate_tsc()

2017-01-20 Thread Len Brown
From: Len Brown The Intel Denverton microserver uses a 25 MHz TSC crystal, so we can derive its exact * TSC frequency using CPUID and some arithmetic, eg. TSC: 1800 MHz (2500 Hz * 216 / 3 / 100) * 'exact' is only as good as the crystal, which should be +/- 20ppm Signed-off-by: Len Brow

[PATCH] x86 tsc: Add the Intel Denverton Processor to native_calibrate_tsc()

2017-01-12 Thread Len Brown
From: Len Brown The Intel Denverton microserver uses a 25 MHz TSC crystal, so we can derive its exact * TSC frequency using CPUID and some arithmetic, eg. TSC: 1800 MHz (2500 Hz * 216 / 3 / 100) * 'exact' is only as good as the crystal, which should be +/- 20ppm Signed-off-by: Len Brow